rewrite tests to work in strict mode, use helpers

171 files changed, 1162 insertions, 1819 deletions

diff --git a/test/built-ins/Object/create/15.2.3.5-4-100.js b/test/built-ins/Object/create/15.2.3.5-4-100.js
index 54946e2bd..b5348592e 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-100.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-100.js
@@ -9,21 +9,14 @@ es5id: 15.2.3.5-4-100
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is not present (8.10.5 step 4)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                value: "ownDataProperty"
-            }
-        });
-
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
-
-        return result1 === true && result2 === true;
+var newObj = Object.create({}, {
+    prop: {
+        value: "ownDataProperty"
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"), "expected newObj to have 'prop'");
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-101.js b/test/built-ins/Object/create/15.2.3.5-4-101.js
index 3eeba23d9..d2e625f6b 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-101.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-101.js
@@ -9,21 +9,14 @@ es5id: 15.2.3.5-4-101
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is own data property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: false
-            }
-        });
-
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
-
-        return result1 === true && result2 === true;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: false
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-103.js b/test/built-ins/Object/create/15.2.3.5-4-103.js
index de387bee3..18d045bad 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-103.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-103.js
@@ -10,30 +10,25 @@ description: >
     Object.create - 'configurable' property of one property in
     'Properties' is own data property that overrides an inherited data
     property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var proto = {
+    configurable: true
+};
 
-        var proto = {
-            configurable: true
-        };
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
+var descObj = new ConstructFun();
 
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
-        var descObj = new ConstructFun();
+Object.defineProperty(descObj, "configurable", {
+    value: false
+});
 
-        Object.defineProperty(descObj, "configurable", {
-            value: false
-        });
+var newObj = Object.create({}, {
+    prop: descObj 
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj 
-        });
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/create/15.2.3.5-4-104.js b/test/built-ins/Object/create/15.2.3.5-4-104.js
index 46efe998e..2904c6446 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-104.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-104.js
@@ -10,33 +10,27 @@ description: >
     Object.create - 'configurable' property of one property in
     'Properties' is own data property that overrides an inherited
     accessor property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var proto = {};
-        Object.defineProperty(proto, "configurable", {
-            get: function () {
-                return true;
-            }
-        });
+var proto = {};
+Object.defineProperty(proto, "configurable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
-        var descObj = new ConstructFun();
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
+var descObj = new ConstructFun();
 
-        Object.defineProperty(descObj, "configurable", {
-            value: false
-        });
+Object.defineProperty(descObj, "configurable", {
+    value: false
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj 
-        });
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
+var newObj = Object.create({}, {
+    prop: descObj 
+});
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-107.js b/test/built-ins/Object/create/15.2.3.5-4-107.js
index b46f0aed1..89198579b 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-107.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-107.js
@@ -10,32 +10,27 @@ description: >
     Object.create - 'configurable' property of one property in
     'Properties' is own accessor property that overrides an inherited
     data property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var proto = {
+    configurable: true
+};
 
-        var proto = {
-            configurable: true
-        };
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
+var descObj = new ConstructFun();
 
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
-        var descObj = new ConstructFun();
+Object.defineProperty(descObj, "configurable", {
+    get: function () {
+        return false;
+    }
+});
 
-        Object.defineProperty(descObj, "configurable", {
-            get: function () {
-                return false;
-            }
-        });
+var newObj = Object.create({}, {
+    prop: descObj
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj
-        });
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/create/15.2.3.5-4-108.js b/test/built-ins/Object/create/15.2.3.5-4-108.js
index fdae7da9d..ff6e584d6 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-108.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-108.js
@@ -10,35 +10,29 @@ description: >
     Object.create - 'configurable' property of one property in
     'Properties' is own accessor property that overrides an inherited
     accessor property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var proto = {};
-        Object.defineProperty(proto, "configurable", {
-            get: function () {
-                return true;
-            }
-        });
+var proto = {};
+Object.defineProperty(proto, "configurable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
-        var descObj = new ConstructFun();
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
+var descObj = new ConstructFun();
 
-        Object.defineProperty(descObj, "configurable", {
-            get: function () {
-                return false;
-            }
-        });
+Object.defineProperty(descObj, "configurable", {
+    get: function () {
+        return false;
+    }
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj 
-        });
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
+var newObj = Object.create({}, {
+    prop: descObj 
+});
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-109.js b/test/built-ins/Object/create/15.2.3.5-4-109.js
index ce2f39ee9..08cd172b8 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-109.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-109.js
@@ -10,23 +10,17 @@ description: >
     Object.create - 'configurable' property of one property in
     'Properties' is own accessor property without a get function
     (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var descObj = {};
+Object.defineProperty(descObj, "configurable", {
+    set: function () { }
+});
 
-        var descObj = {};
-        Object.defineProperty(descObj, "configurable", {
-            set: function () { }
-        });
+var newObj = Object.create({}, {
+    prop: descObj 
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj 
-        });
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
-
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-110.js b/test/built-ins/Object/create/15.2.3.5-4-110.js
index 0813fa1a2..61fbe3872 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-110.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-110.js
@@ -10,33 +10,27 @@ description: >
     Object.create - 'configurable' property of one property in
     'Properties' is own accessor property without a get function,
     which overrides an inherited accessor property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var proto = {};
-        Object.defineProperty(proto, "configurable", {
-            get: function () {
-                return true;
-            }
-        });
+var proto = {};
+Object.defineProperty(proto, "configurable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
-        var descObj = new ConstructFun();
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
+var descObj = new ConstructFun();
 
-        Object.defineProperty(descObj, "configurable", {
-            set: function () { }
-        });
+Object.defineProperty(descObj, "configurable", {
+    set: function () { }
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj 
-        });
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
+var newObj = Object.create({}, {
+    prop: descObj 
+});
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-111.js b/test/built-ins/Object/create/15.2.3.5-4-111.js
index ce4312252..0735f1fd4 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-111.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-111.js
@@ -10,28 +10,22 @@ description: >
     Object.create - 'configurable' property of one property in
     'Properties' is an inherited accessor property without a get
     function (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var proto = {};
 
-        var proto = {};
+Object.defineProperty(proto, "configurable", {
+    set: function () { }
+});
 
-        Object.defineProperty(proto, "configurable", {
-            set: function () { }
-        });
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
+var descObj = new ConstructFun();
 
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
-        var descObj = new ConstructFun();
+var newObj = Object.create({}, {
+    prop: descObj 
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj 
-        });
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
-
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-125.js b/test/built-ins/Object/create/15.2.3.5-4-125.js
index d7820db41..62596a5ba 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-125.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-125.js
@@ -9,21 +9,15 @@ es5id: 15.2.3.5-4-125
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is undefined (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: undefined
-            }
-        });
+var newObj = Object.create({}, {
+    prop: {
+        configurable: undefined
+    }
+});
 
-        var result1 = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var result2 = newObj.hasOwnProperty("prop");
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-126.js b/test/built-ins/Object/create/15.2.3.5-4-126.js
index 43a8a222a..fffac6182 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-126.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-126.js
@@ -9,23 +9,14 @@ es5id: 15.2.3.5-4-126
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is null (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: null
-            }
-        });
-
-        var beforeDeleted = newObj.hasOwnProperty("prop");
-
-        delete newObj.prop;
-
-        var afterDeleted = newObj.hasOwnProperty("prop");
-
-        return beforeDeleted === true && afterDeleted === true;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: null
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-128.js b/test/built-ins/Object/create/15.2.3.5-4-128.js
index 732ce93df..8c2414388 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-128.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-128.js
@@ -9,23 +9,14 @@ es5id: 15.2.3.5-4-128
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is false (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: false
-            }
-        });
-
-        var beforeDeleted = newObj.hasOwnProperty("prop");
-
-        delete newObj.prop;
-
-        var afterDeleted = newObj.hasOwnProperty("prop");
-
-        return beforeDeleted === true && afterDeleted === true;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: false
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-129.js b/test/built-ins/Object/create/15.2.3.5-4-129.js
index 4c4e1670d..0a4984091 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-129.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-129.js
@@ -9,23 +9,14 @@ es5id: 15.2.3.5-4-129
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is 0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: 0
-            }
-        });
-
-        var beforeDeleted = newObj.hasOwnProperty("prop");
-
-        delete newObj.prop;
-
-        var afterDeleted = newObj.hasOwnProperty("prop");
-
-        return beforeDeleted === true && afterDeleted === true;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: 0
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-130.js b/test/built-ins/Object/create/15.2.3.5-4-130.js
index ec8f536ab..9443114ed 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-130.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-130.js
@@ -9,23 +9,15 @@ es5id: 15.2.3.5-4-130
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is +0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: +0
-            }
-        });
-
-        var beforeDeleted = newObj.hasOwnProperty("prop");
-
-        delete newObj.prop;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: +0
+    }
+});
 
-        var afterDeleted = newObj.hasOwnProperty("prop");
 
-        return beforeDeleted === true && afterDeleted === true;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-131.js b/test/built-ins/Object/create/15.2.3.5-4-131.js
index 0fe7a559a..60ca3b787 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-131.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-131.js
@@ -9,23 +9,14 @@ es5id: 15.2.3.5-4-131
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is -0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: -0
-            }
-        });
-
-        var beforeDeleted = newObj.hasOwnProperty("prop");
-
-        delete newObj.prop;
-
-        var afterDeleted = newObj.hasOwnProperty("prop");
-
-        return beforeDeleted === true && afterDeleted === true;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: -0
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-132.js b/test/built-ins/Object/create/15.2.3.5-4-132.js
index b48bb3507..fff12ff0e 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-132.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-132.js
@@ -9,23 +9,14 @@ es5id: 15.2.3.5-4-132
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is NaN (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: NaN
-            }
-        });
-
-        var beforeDeleted = newObj.hasOwnProperty("prop");
-
-        delete newObj.prop;
-
-        var afterDeleted = newObj.hasOwnProperty("prop");
-
-        return beforeDeleted === true && afterDeleted === true;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: NaN
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-135.js b/test/built-ins/Object/create/15.2.3.5-4-135.js
index ccd7200a5..64e7fc1ce 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-135.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-135.js
@@ -9,23 +9,14 @@ es5id: 15.2.3.5-4-135
 description: >
     Object.create - 'configurable' property of one property in
     'Properties' is an empty string (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                configurable: ""
-            }
-        });
-
-        var beforeDeleted = newObj.hasOwnProperty("prop");
-
-        delete newObj.prop;
-
-        var afterDeleted = newObj.hasOwnProperty("prop");
-
-        return beforeDeleted === true && afterDeleted === true;
+var newObj = Object.create({}, {
+    prop: {
+        configurable: ""
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-179.js b/test/built-ins/Object/create/15.2.3.5-4-179.js
index bd1a51247..1a6108937 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-179.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-179.js
@@ -9,23 +9,14 @@ es5id: 15.2.3.5-4-179
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is not present (8.10.5 step 6)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                value: 100
-            }
-        });
-
-        var beforeWrite = (newObj.prop === 100);
-
-        newObj.prop = "isWritable";
-
-        var afterWrite = (newObj.prop === 100);
-
-        return beforeWrite === true && afterWrite === true;
+var newObj = Object.create({}, {
+    prop: {
+        value: 100
     }
-runTestCase(testcase);
+});
+
+assert.sameValue(newObj.prop, 100);
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-188.js b/test/built-ins/Object/create/15.2.3.5-4-188.js
index 19e357ea3..921ac5ced 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-188.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-188.js
@@ -10,27 +10,18 @@ description: >
     Object.create - 'writable' property of one property in
     'Properties' is own accessor property without a get function
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var descObj = { value: 100 };
 
-        var descObj = { value: 100 };
+Object.defineProperty(descObj, "writable", {
+    set: function () { }
+});
 
-        Object.defineProperty(descObj, "writable", {
-            set: function () { }
-        });
+var newObj = Object.create({}, {
+    prop: descObj
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj
-        });
-
-        var beforeWrite = (newObj.prop === 100);
-
-        newObj.prop = "isWritable";
-
-        var afterWrite = (newObj.prop === 100);
-
-        return beforeWrite === true && afterWrite === true;
-    }
-runTestCase(testcase);
+assert.sameValue(newObj.prop, 100);
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-189.js b/test/built-ins/Object/create/15.2.3.5-4-189.js
index 2454ae2c7..2c4c3116f 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-189.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-189.js
@@ -10,38 +10,30 @@ description: >
     Object.create - 'writable' property of one property in
     'Properties' is own accessor property without a get function,
     which overrides an inherited accessor property (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var proto = {};
 
-        var proto = {};
-
-        Object.defineProperty(proto, "writable", {
-            get: function () {
-                return true;
-            }
-        });
-
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
-
-        var descObj = new ConstructFun();
-
-        Object.defineProperty(descObj, "writable", {
-            set: function () { }
-        });
+Object.defineProperty(proto, "writable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj
-        });
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
 
-        var beforeWrite = (newObj.hasOwnProperty("prop") && typeof (newObj.prop) === "undefined");
+var descObj = new ConstructFun();
 
-        newObj.prop = "isWritable";
+Object.defineProperty(descObj, "writable", {
+    set: function () { }
+});
 
-        var afterWrite = (newObj.prop === "isWritable");
+var newObj = Object.create({}, {
+    prop: descObj
+});
 
-        return beforeWrite === true && afterWrite === false;
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"))
+assert.sameValue(typeof (newObj.prop), "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-190.js b/test/built-ins/Object/create/15.2.3.5-4-190.js
index c9d5746dd..21c7586e2 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-190.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-190.js
@@ -10,32 +10,23 @@ description: >
     Object.create - 'writable' property of one property in
     'Properties' is an inherited accessor property without a get
     function (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var proto = { value: 100 };
 
-        var proto = { value: 100 };
+Object.defineProperty(proto, "writable", {
+    set: function () { }
+});
 
-        Object.defineProperty(proto, "writable", {
-            set: function () { }
-        });
+var ConstructFun = function () { };
+ConstructFun.prototype = proto;
 
-        var ConstructFun = function () { };
-        ConstructFun.prototype = proto;
+var descObj = new ConstructFun();
 
-        var descObj = new ConstructFun();
+var newObj = Object.create({}, {
+    prop: descObj
+});
 
-        var newObj = Object.create({}, {
-            prop: descObj
-        });
-
-        var beforeWrite = (newObj.prop === 100);
-
-        newObj.prop = "isWritable";
-
-        var afterWrite = (newObj.prop === 100);
-
-        return beforeWrite === true && afterWrite === true;
-    }
-runTestCase(testcase);
+assert.sameValue(newObj.prop, 100);
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-204.js b/test/built-ins/Object/create/15.2.3.5-4-204.js
index a3cc23d73..1ad274d89 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-204.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-204.js
@@ -9,20 +9,15 @@ es5id: 15.2.3.5-4-204
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is undefined (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var newObj = Object.create({}, {
-            prop: {
-                writable: undefined
-            }
-        });
-
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
-
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        writable: undefined
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+assert.sameValue(typeof newObj.prop, "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-205.js b/test/built-ins/Object/create/15.2.3.5-4-205.js
index 6001a5e23..75143b36a 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-205.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-205.js
@@ -9,20 +9,15 @@ es5id: 15.2.3.5-4-205
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is null (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                writable: null
-            }
-        });
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
-
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        writable: null
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+assert.sameValue(typeof newObj.prop, "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-207.js b/test/built-ins/Object/create/15.2.3.5-4-207.js
index f2de55adc..7ce5b9baf 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-207.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-207.js
@@ -9,20 +9,15 @@ es5id: 15.2.3.5-4-207
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is false (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                writable: false
-            }
-        });
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
-
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        writable: false
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+assert.sameValue(typeof newObj.prop, "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-208.js b/test/built-ins/Object/create/15.2.3.5-4-208.js
index 5833446e2..0830630f0 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-208.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-208.js
@@ -9,20 +9,15 @@ es5id: 15.2.3.5-4-208
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is 0 (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                writable: 0
-            }
-        });
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
-
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        writable: 0
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+assert.sameValue(typeof newObj.prop, "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-209.js b/test/built-ins/Object/create/15.2.3.5-4-209.js
index 07ceb4a0d..efce6f6fb 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-209.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-209.js
@@ -9,20 +9,15 @@ es5id: 15.2.3.5-4-209
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is +0 (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                writable: +0
-            }
-        });
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
-
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        writable: +0
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+assert.sameValue(typeof newObj.prop, "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-210.js b/test/built-ins/Object/create/15.2.3.5-4-210.js
index 99cf167a8..3c52f342e 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-210.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-210.js
@@ -9,20 +9,15 @@ es5id: 15.2.3.5-4-210
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is -0 (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                writable: -0
-            }
-        });
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
-
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        writable: -0
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"))
+assert.sameValue(typeof newObj.prop, "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-211.js b/test/built-ins/Object/create/15.2.3.5-4-211.js
index ee514260a..1e613f058 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-211.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-211.js
@@ -9,20 +9,15 @@ es5id: 15.2.3.5-4-211
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is NaN (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                writable: NaN
-            }
-        });
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
-
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        writable: NaN
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+assert.sameValue(typeof newObj.prop, "undefined")
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-214.js b/test/built-ins/Object/create/15.2.3.5-4-214.js
index b31462556..6ed2f7b4a 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-214.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-214.js
@@ -9,21 +9,17 @@ es5id: 15.2.3.5-4-214
 description: >
     Object.create - 'writable' property of one property in
     'Properties' is an empty string (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var descObj = {
-            writable: ""
-        };
+var descObj = {
+    writable: ""
+};
 
-        var newObj = Object.create({}, {
-            prop: descObj
-        });
-        var hasProperty = newObj.hasOwnProperty("prop") && typeof newObj.prop === "undefined";
+var newObj = Object.create({}, {
+    prop: descObj
+});
 
-        newObj.prop = 121;
-
-        return hasProperty && typeof newObj.prop === "undefined";
-    }
-runTestCase(testcase);
+assert(newObj.hasOwnProperty("prop"))
+assert.sameValue(typeof newObj.prop, "undefined");
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-267.js b/test/built-ins/Object/create/15.2.3.5-4-267.js
index 8f1cf5816..247824ee8 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-267.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-267.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.5-4-267
 description: >
     Object.create - 'set' property of one property in 'Properties' is
     not present (8.10.5 step 8)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var newObj = Object.create({}, {
-            prop: {
-                get: function () {
-                    return "data";
-                }
-            }
-        });
-
-        var hasProperty = newObj.hasOwnProperty("prop");
-
-        newObj.prop = "overrideData";
-
-        return hasProperty && newObj.prop === "data";
+var newObj = Object.create({}, {
+    prop: {
+        get: function () {
+            return "data";
+        }
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-292.js b/test/built-ins/Object/create/15.2.3.5-4-292.js
index ca442da2e..663fd1893 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-292.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-292.js
@@ -9,19 +9,14 @@ es5id: 15.2.3.5-4-292
 description: >
     Object.create - 'set' property of one property in 'Properties' is
     undefined (8.10.5 step 8.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-
-        var newObj = Object.create({}, {
-            prop: {
-                set: undefined
-            }
-        });
-
-        newObj.prop = "overrideData";
-
-        return newObj.hasOwnProperty("prop") && typeof (newObj.prop) === "undefined";
+var newObj = Object.create({}, {
+    prop: {
+        set: undefined
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-307.js b/test/built-ins/Object/create/15.2.3.5-4-307.js
index f95c34d06..e99505c06 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-307.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-307.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.5-4-307
 description: >
     Object.create - [[Writable]] is set as false if it is absent in
     data descriptor of one property in 'Properties' (8.12.9 step 4.a.i)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var newObj = Object.create({}, {
-            prop: {
-                value: 1001,
-                configurable: true,
-                enumerable: true
-            }
-        });
-
-        var hasProperty = newObj.hasOwnProperty("prop");
-
-        newObj.prop = 12;
-
-        return hasProperty && newObj.prop === 1001;
+var newObj = Object.create({}, {
+    prop: {
+        value: 1001,
+        configurable: true,
+        enumerable: true
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotWritable(newObj, "prop");
diff --git a/test/built-ins/Object/create/15.2.3.5-4-309.js b/test/built-ins/Object/create/15.2.3.5-4-309.js
index f4df7a154..d8053d1dc 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-309.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-309.js
@@ -10,26 +10,17 @@ description: >
     Object.create - [[Configurable]] is set as false if it is absent
     in data descriptor of one property in 'Properties' (8.12.9 step
     4.a.i)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var isNotConfigurable = false;
-
-        try {
-            var newObj = Object.create({}, {
-                prop: {
-                    value: 1001,
-                    writable: true,
-                    enumerable: true
-                }
-            });
-            var hasProperty = newObj.hasOwnProperty("prop");
-            delete newObj.prop;
-            isNotConfigurable = newObj.hasOwnProperty("prop");
-            return hasProperty && isNotConfigurable;
-        } catch (e) {
-            return false;
-        }
+var newObj = Object.create({}, {
+    prop: {
+        value: 1001,
+        writable: true,
+        enumerable: true
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
+
diff --git a/test/built-ins/Object/create/15.2.3.5-4-313.js b/test/built-ins/Object/create/15.2.3.5-4-313.js
index f68d1b2f6..d9f098da8 100644
--- a/test/built-ins/Object/create/15.2.3.5-4-313.js
+++ b/test/built-ins/Object/create/15.2.3.5-4-313.js
@@ -10,20 +10,16 @@ description: >
     Object.create - [[Configurable]] is set as false if it is absent
     in accessor descriptor of one property in 'Properties' (8.12.9
     step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {       
-        var newObj = Object.create({}, {
-            prop: {
-                set: function () { },
-                get: function () { },
-                enumerable: true
-            }
-        });
-        var hasProperty = newObj.hasOwnProperty("prop");
-        delete newObj.prop;
-        var isNotConfigurable = newObj.hasOwnProperty("prop");
-        return hasProperty && isNotConfigurable;
+var newObj = Object.create({}, {
+    prop: {
+        set: function () { },
+        get: function () { },
+        enumerable: true
     }
-runTestCase(testcase);
+});
+
+assert(newObj.hasOwnProperty("prop"));
+verifyNotConfigurable(newObj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js
index 90f74b537..09c82f105 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-138.js
@@ -9,20 +9,16 @@ es5id: 15.2.3.7-5-b-138
 description: >
     Object.defineProperties - 'writable' property of 'descObj' is
     present (8.10.5 step 6)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: false
-            }
-        });
-
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
+Object.defineProperties(obj, {
+    property: {
+        writable: false
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js
index bd4d829b3..d0401102b 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-139.js
@@ -9,20 +9,16 @@ es5id: 15.2.3.7-5-b-139
 description: >
     Object.defineProperties - 'writable' property of 'descObj' is not
     present (8.10.5 step 6)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                value: "abc"
-            }
-        });
+Object.defineProperties(obj, {
+    property: {
+        value: "abc"
+    }
+});
 
-        obj.property = "isWritable";
+verifyNotWritable(obj, "property");
 
-        return obj.property === "abc";
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js
index b4713fff3..fd608636a 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-140.js
@@ -9,20 +9,17 @@ es5id: 15.2.3.7-5-b-140
 description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     data property (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: false
-            }
-        });
+Object.defineProperties(obj, {
+    property: {
+        writable: false
+    }
+});
 
-        obj.property = "isWritable";
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js
index 3e96bb06b..a3f2080ad 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-141.js
@@ -9,27 +9,23 @@ es5id: 15.2.3.7-5-b-141
 description: >
     Object.defineProperties - 'writable' property of 'descObj' is
     inherited data property (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var proto = {
-            writable: false
-        };
+var proto = {
+    writable: false
+};
 
-        var Con = function () { };
-        Con.prototype = proto;
+var Con = function () { };
+Con.prototype = proto;
 
-        var descObj = new Con();
+var descObj = new Con();
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js
index c8d773512..1de758c89 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-142.js
@@ -10,29 +10,25 @@ description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     data property that overrides an inherited data property (8.10.5
     step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var proto = {
-            writable: true
-        };
+var proto = {
+    writable: true
+};
 
-        var Con = function () { };
-        Con.prototype = proto;
+var Con = function () { };
+Con.prototype = proto;
 
-        var descObj = new Con();
+var descObj = new Con();
 
-        descObj.writable = false;
+descObj.writable = false;
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js
index 4d9c84a2f..0b4f22455 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-143.js
@@ -10,35 +10,32 @@ description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     data property that overrides an inherited accessor property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var proto = { value: 120 };
+var proto = { value: 120 };
 
-        Object.defineProperty(proto, "writable", {
-            get: function () {
-                return true;
-            }
-        });
+Object.defineProperty(proto, "writable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var Con = function () { };
-        Con.prototype = proto;
+var Con = function () { };
+Con.prototype = proto;
 
-        var descObj = new Con();
+var descObj = new Con();
 
-        Object.defineProperty(descObj, "writable", {
-            value: false
-        });
+Object.defineProperty(descObj, "writable", {
+    value: false
+});
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
 
-        return obj.hasOwnProperty("property") && obj.property === 120;
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js
index 285610f21..337853994 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-144.js
@@ -9,26 +9,22 @@ es5id: 15.2.3.7-5-b-144
 description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     accessor property (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var descObj = {};
+var descObj = {};
 
-        Object.defineProperty(descObj, "writable", {
-            get: function () {
-                return false;
-            }
-        });
-
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperty(descObj, "writable", {
+    get: function () {
+        return false;
+    }
+});
 
-        obj.property = "isWritable";
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js
index abfba42d5..d255ced59 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-146.js
@@ -10,33 +10,29 @@ description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     accessor property that overrides an inherited data property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var proto = {
-            writable: true
-        };
+var proto = {
+    writable: true
+};
 
-        var Con = function () { };
-        Con.prototype = proto;
+var Con = function () { };
+Con.prototype = proto;
 
-        var descObj = new Con();
+var descObj = new Con();
 
-        Object.defineProperty(descObj, "writable", {
-            get: function () {
-                return false;
-            }
-        });
-
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperty(descObj, "writable", {
+    get: function () {
+        return false;
+    }
+});
 
-        obj.property = "isWritable";
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js
index 4db49aa11..ac2320185 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-147.js
@@ -10,37 +10,33 @@ description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     accessor property that overrides an inherited accessor property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var proto = {};
+var proto = {};
 
-        Object.defineProperty(proto, "writable", {
-            get: function () {
-                return true;
-            }
-        });
-
-        var Con = function () { };
-        Con.prototype = proto;
+Object.defineProperty(proto, "writable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var descObj = new Con();
+var Con = function () { };
+Con.prototype = proto;
 
-        Object.defineProperty(descObj, "writable", {
-            get: function () {
-                return false;
-            }
-        });
+var descObj = new Con();
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperty(descObj, "writable", {
+    get: function () {
+        return false;
+    }
+});
 
-        obj.property = "isWritable";
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js
index 72c5c9bda..bcb3ad69b 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-148.js
@@ -9,24 +9,20 @@ es5id: 15.2.3.7-5-b-148
 description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     accessor property without a get function (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var descObj = {};
+var descObj = {};
 
-        Object.defineProperty(descObj, "writable", {
-            set: function () { }
-        });
+Object.defineProperty(descObj, "writable", {
+    set: function () { }
+});
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js
index b984febec..a2c597412 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-149.js
@@ -10,35 +10,31 @@ description: >
     Object.defineProperties - 'writable' property of 'descObj' is own
     accessor property without a get function that overrides an
     inherited accessor property (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var proto = {};
+var proto = {};
 
-        Object.defineProperty(proto, "writable", {
-            get: function () {
-                return true;
-            }
-        });
-
-        var Con = function () { };
-        Con.prototype = proto;
+Object.defineProperty(proto, "writable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var descObj = new Con();
+var Con = function () { };
+Con.prototype = proto;
 
-        Object.defineProperty(descObj, "writable", {
-            set: function () { }
-        });
+var descObj = new Con();
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperty(descObj, "writable", {
+    set: function () { }
+});
 
-        obj.property = "isWritable";
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js
index 283fe2c27..7ae7e05ea 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-150.js
@@ -10,29 +10,25 @@ description: >
     Object.defineProperties - 'writable' property of 'descObj' is
     inherited accessor property without a get function (8.10.5 step
     6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var proto = {};
+var proto = {};
 
-        Object.defineProperty(proto, "writable", {
-            set: function () { }
-        });
+Object.defineProperty(proto, "writable", {
+    set: function () { }
+});
 
-        var Con = function () { };
-        Con.prototype = proto;
+var Con = function () { };
+Con.prototype = proto;
 
-        var descObj = new Con();
+var descObj = new Con();
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js
index 4efab8a00..e2a12fd80 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-151.js
@@ -10,24 +10,20 @@ description: >
     Object.defineProperties - 'descObj' is a Function object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var func = function (a, b) {
-            return a + b;
-        };
+var func = function (a, b) {
+    return a + b;
+};
 
-        func.writable = false;
+func.writable = false;
 
-        Object.defineProperties(obj, {
-            property: func
-        });
+Object.defineProperties(obj, {
+    property: func
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js
index 512eda784..aefd8d97a 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-152.js
@@ -10,22 +10,18 @@ description: >
     Object.defineProperties - 'descObj' is an Array object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var arr = [1, 2, 3];
+var arr = [1, 2, 3];
 
-        arr.writable = false;
+arr.writable = false;
 
-        Object.defineProperties(obj, {
-            property: arr
-        });
+Object.defineProperties(obj, {
+    property: arr
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js
index a1e80ba2a..959745efc 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-153.js
@@ -10,22 +10,18 @@ description: >
     Object.defineProperties - 'descObj' is a String object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var str = new String("abc");
+var str = new String("abc");
 
-        str.writable = false;
+str.writable = false;
 
-        Object.defineProperties(obj, {
-            property: str
-        });
+Object.defineProperties(obj, {
+    property: str
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js
index 995f522e5..3df5fe791 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-154.js
@@ -10,22 +10,18 @@ description: >
     Object.defineProperties - 'descObj' is a Boolean object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var descObj = new Boolean(false);
+var descObj = new Boolean(false);
 
-        descObj.writable = false;
+descObj.writable = false;
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js
index 790b335ef..5d562bd6d 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-155.js
@@ -10,22 +10,18 @@ description: >
     Object.defineProperties - 'descObj' is a Number object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var descObj = new Number(-9);
+var descObj = new Number(-9);
 
-        descObj.writable = false;
+descObj.writable = false;
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js
index 33127f81a..1219e7dcc 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-156.js
@@ -10,25 +10,22 @@ description: >
     Object.defineProperties - 'descObj' is the Math object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
+var obj = {};
 
-        try {
-            Math.writable = false;
+try {
+    Math.writable = false;
 
-            Object.defineProperties(obj, {
-                property: Math
-            });
+    Object.defineProperties(obj, {
+        property: Math
+    });
 
-            obj.property = "isWritable";
+    assert(obj.hasOwnProperty("property"));
+    verifyNotWritable(obj, "property");
 
-            return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-        } finally {
-            delete Math.writable;
-        }
-    }
-runTestCase(testcase);
+} finally {
+    delete Math.writable;
+}
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js
index a7bfc4745..597476f54 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-157.js
@@ -10,22 +10,18 @@ description: >
     Object.defineProperties - 'descObj' is a Date object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var descObj = new Date();
+var descObj = new Date();
 
-        descObj.writable = false;
+descObj.writable = false;
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js
index 090aa0ff9..dffb8f924 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-158.js
@@ -10,22 +10,19 @@ description: >
     Object.defineProperties - 'descObj' is a RegExp object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var descObj = new RegExp();
+var descObj = new RegExp();
 
-        descObj.writable = false;
+descObj.writable = false;
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js
index 75abd9a4b..580541232 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-159.js
@@ -10,25 +10,22 @@ description: >
     Object.defineProperties - 'descObj' is the JSON object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var obj = {};
 
-        var obj = {};
+try {
+    JSON.writable = false;
 
-        try {
-            JSON.writable = false;
+    Object.defineProperties(obj, {
+        property: JSON
+    });
 
-            Object.defineProperties(obj, {
-                property: JSON
-            });
+    assert(obj.hasOwnProperty("property"));
+    verifyNotWritable(obj, "property");
 
-            obj.property = "isWritable";
+} finally {
+    delete JSON.writable;
+}
 
-            return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-        } finally {
-            delete JSON.writable;
-        }
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js
index e1285a5f2..548bbc94c 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-160.js
@@ -10,22 +10,18 @@ description: >
     Object.defineProperties - 'descObj' is an Error object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var descObj = new Error();
+var descObj = new Error();
 
-        descObj.writable = false;
+descObj.writable = false;
 
-        Object.defineProperties(obj, {
-            property: descObj
-        });
+Object.defineProperties(obj, {
+    property: descObj
+});
 
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js
index 506f36a79..76004214f 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-161.js
@@ -10,24 +10,21 @@ description: >
     Object.defineProperties - 'descObj' is the Arguments object which
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        var func = function (a, b) {
-            arguments.writable = false;
+var func = function (a, b) {
+    arguments.writable = false;
 
-            Object.defineProperties(obj, {
-                property: arguments
-            });
+    Object.defineProperties(obj, {
+        property: arguments
+    });
 
-            obj.property = "isWritable";
+    assert(obj.hasOwnProperty("property"));
+    verifyNotWritable(obj, "property");
+};
 
-            return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-        };
+func();
 
-        return func();
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js
index d485dae30..c69d8c0d9 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-163.js
@@ -11,26 +11,25 @@ description: >
     implements its own [[Get]] method to get 'writable' property
     (8.10.5 step 6.a)
 includes:
-    - runTestCase.js
+    - propertyHelper.js
     - fnGlobalObject.js
 ---*/
 
-function testcase() {
 
-        var obj = {};
+var obj = {};
 
-        try {
-            fnGlobalObject().writable = false;
+try {
+    fnGlobalObject().writable = false;
 
-            Object.defineProperties(obj, {
-                property: fnGlobalObject()
-            });
+    Object.defineProperties(obj, {
+        property: fnGlobalObject()
+    });
+
+    assert(obj.hasOwnProperty("property"));
+    verifyNotWritable(obj, "property");
+
+} finally {
+    delete fnGlobalObject().writable;
+}
 
-            obj.property = "isWritable";
 
-            return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-        } finally {
-            delete fnGlobalObject().writable;
-        }
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js
index 0ed8c7625..ed1d34c1d 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-164.js
@@ -9,20 +9,16 @@ es5id: 15.2.3.7-5-b-164
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is undefined (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: undefined
-            }
-        });
-
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
+Object.defineProperties(obj, {
+    property: {
+        writable: undefined
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js
index 93162ef63..c38462228 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-165.js
@@ -9,20 +9,16 @@ es5id: 15.2.3.7-5-b-165
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is null (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: null
-            }
-        });
-
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
+Object.defineProperties(obj, {
+    property: {
+        writable: null
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js
index b4a58a8d8..d4ee02660 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-167.js
@@ -9,20 +9,17 @@ es5id: 15.2.3.7-5-b-167
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is false (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: false
-            }
-        });
+Object.defineProperties(obj, {
+    property: {
+        writable: false
+    }
+});
 
-        obj.property = "isWritable";
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js
index 4cc9e32f7..ac5376010 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-168.js
@@ -9,20 +9,16 @@ es5id: 15.2.3.7-5-b-168
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is 0 (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: 0
-            }
-        });
-
-        obj.property = "isWritable";
-
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
+Object.defineProperties(obj, {
+    property: {
+        writable: 0
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js
index 0642bd9fa..7cdbb6d90 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-169.js
@@ -9,20 +9,17 @@ es5id: 15.2.3.7-5-b-169
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is +0 (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: +0
-            }
-        });
+Object.defineProperties(obj, {
+    property: {
+        writable: +0
+    }
+});
 
-        obj.property = "isWritable";
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js
index 06def7b7c..cf2278135 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-170.js
@@ -9,20 +9,17 @@ es5id: 15.2.3.7-5-b-170
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is -0 (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: -0
-            }
-        });
+Object.defineProperties(obj, {
+    property: {
+        writable: -0
+    }
+});
 
-        obj.property = "isWritable";
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js
index ba567b9be..41522f889 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-171.js
@@ -9,20 +9,17 @@ es5id: 15.2.3.7-5-b-171
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is NaN (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                writable: NaN
-            }
-        });
+Object.defineProperties(obj, {
+    property: {
+        writable: NaN
+    }
+});
 
-        obj.property = "isWritable";
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
 
-        return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js
index 5dde2bfc0..3e191f2af 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-174.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.7-5-b-174
 description: >
     Object.defineProperties - value of 'writable' property of
     'descObj' is empty string (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperties(obj, {
@@ -26,4 +25,6 @@ function testcase() {
         return obj.hasOwnProperty("property") && typeof (obj.property) === "undefined";
 
     }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("property"));
+verifyNotWritable(obj, "property");
+assert(obj.hasOwnProperty("property"));
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-227.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-227.js
index f8a0874bc..287e5d643 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-227.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-227.js
@@ -9,30 +9,24 @@ es5id: 15.2.3.7-5-b-227
 description: >
     Object.defineProperties - 'set' property of 'descObj' is not
     present (8.10.5 step 8)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var data = "data";
-        var obj = {};
+var data = "data";
+var obj = {};
 
-        try {
-            Object.defineProperties(obj, {
-                descObj: {
-                    get: function () {
-                        return data;
-                    }
-                }
-            });
+Object.defineProperties(obj, {
+    descObj: {
+        get: function () {
+            return data;
+        }
+    }
+});
 
 
-            obj.descObj = "overrideData";
+assert(obj.hasOwnProperty("descObj"));
+verifyNotWritable(obj, "descObj");
 
-            var desc = Object.getOwnPropertyDescriptor(obj, "descObj");
-            return obj.hasOwnProperty("descObj") && typeof (desc.set) === "undefined" && data === "data";
-        } catch (e) {
-            return false;
-        }
+var desc = Object.getOwnPropertyDescriptor(obj, "descObj");
+assert.sameValue(typeof (desc.set), "undefined")
 
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js
index 272b02e98..8fd7fc9c3 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-60.js
@@ -9,21 +9,15 @@ es5id: 15.2.3.7-5-b-60
 description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     not present (8.10.5 step 4)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            prop: {}
-        });
+Object.defineProperties(obj, {
+    prop: {}
+});
 
-        var result1 = obj.hasOwnProperty("prop");
-        delete obj.prop;
-        var result2 = obj.hasOwnProperty("prop");
-
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("prop"));
+verifyNotConfigurable(obj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js
index 9d208285f..aab94d98f 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-63.js
@@ -10,31 +10,26 @@ description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     own data property that overrides an inherited data property
     (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
-        var proto = {
-            configurable: true
-        };
+var obj = {};
+var proto = {
+    configurable: true
+};
 
-        var Con = function () { };
-        Con.prototype = proto;
-        var descObj = new Con();
+var Con = function () { };
+Con.prototype = proto;
+var descObj = new Con();
 
-        Object.defineProperty(descObj, "configurable", {
-            value: false
-        });
+Object.defineProperty(descObj, "configurable", {
+    value: false
+});
 
-        Object.defineProperties(obj, {
-            prop: descObj
-        });
-        var result1 = obj.hasOwnProperty("prop");
-        delete obj.prop;
-        var result2 = obj.hasOwnProperty("prop");
+Object.defineProperties(obj, {
+    prop: descObj
+});
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("prop"));
+verifyNotConfigurable(obj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js
index f754ca4fc..38ddeec3a 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-64.js
@@ -10,34 +10,29 @@ description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     own data property that overrides an inherited accessor property
     (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
-        var proto = {};
-        Object.defineProperty(proto, "configurable", {
-            get: function () {
-                return true;
-            }
-        });
+var obj = {};
+var proto = {};
+Object.defineProperty(proto, "configurable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var Con = function () { };
-        Con.prototype = proto;
-        var descObj = new Con();
+var Con = function () { };
+Con.prototype = proto;
+var descObj = new Con();
 
-        Object.defineProperty(descObj, "configurable", {
-            value: false
-        });
+Object.defineProperty(descObj, "configurable", {
+    value: false
+});
 
-        Object.defineProperties(obj, {
-            prop: descObj
-        });
-        var result1 = obj.hasOwnProperty("prop");
-        delete obj.prop;
-        var result2 = obj.hasOwnProperty("prop");
+Object.defineProperties(obj, {
+    prop: descObj
+});
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("prop"));
+verifyNotConfigurable(obj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js
index eec0dbc5d..0456492cc 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-67.js
@@ -10,33 +10,28 @@ description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     own accessor property that overrides an inherited data property
     (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
-        var proto = {
-            configurable: true
-        };
+var obj = {};
+var proto = {
+    configurable: true
+};
 
-        var Con = function () { };
-        Con.prototype = proto;
-        var descObj = new Con();
+var Con = function () { };
+Con.prototype = proto;
+var descObj = new Con();
 
-        Object.defineProperty(descObj, "configurable", {
-            get: function () {
-                return false;
-            }
-        });
+Object.defineProperty(descObj, "configurable", {
+    get: function () {
+        return false;
+    }
+});
 
-        Object.defineProperties(obj, {
-            prop: descObj
-        });
-        var result1 = obj.hasOwnProperty("prop");
-        delete obj.prop;
-        var result2 = obj.hasOwnProperty("prop");
+Object.defineProperties(obj, {
+    prop: descObj
+});
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("prop"));
+verifyNotConfigurable(obj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js
index e46ce6803..2326f56dd 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-68.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     own accessor property that overrides an inherited accessor
     property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
         var obj = {};
         var proto = {};
@@ -42,4 +41,3 @@ function testcase() {
 
         return result1 === true && result2 === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js
index 4f43dd026..a50f0700b 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-69.js
@@ -9,25 +9,19 @@ es5id: 15.2.3.7-5-b-69
 description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     own accessor property without a get function (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var obj = {};
 
-        var obj = {};
+var descObj = {};
+Object.defineProperty(descObj, "configurable", {
+    set: function () { }
+});
 
-        var descObj = {};
-        Object.defineProperty(descObj, "configurable", {
-            set: function () { }
-        });
+Object.defineProperties(obj, {
+    prop: descObj
+});
 
-        Object.defineProperties(obj, {
-            prop: descObj
-        });
-        var result1 = obj.hasOwnProperty("prop");
-        delete obj.prop;
-        var result2 = obj.hasOwnProperty("prop");
-
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("prop"));
+verifyNotConfigurable(obj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js
index 850343a50..56f3a40e2 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-70.js
@@ -10,34 +10,29 @@ description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     own accessor property without a get function that overrides an
     inherited accessor property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
-        var proto = {};
-        Object.defineProperty(proto, "configurable", {
-            get: function () {
-                return true;
-            }
-        });
+var obj = {};
+var proto = {};
+Object.defineProperty(proto, "configurable", {
+    get: function () {
+        return true;
+    }
+});
 
-        var Con = function () { };
-        Con.prototype = proto;
-        var descObj = new Con();
+var Con = function () { };
+Con.prototype = proto;
+var descObj = new Con();
 
-        Object.defineProperty(descObj, "configurable", {
-            set: function () { }
-        });
+Object.defineProperty(descObj, "configurable", {
+    set: function () { }
+});
 
-        Object.defineProperties(obj, {
-            prop: descObj
-        });
-        var result1 = obj.hasOwnProperty("prop");
-        delete obj.prop;
-        var result2 = obj.hasOwnProperty("prop");
+Object.defineProperties(obj, {
+    prop: descObj
+});
 
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("prop"));
+verifyNotConfigurable(obj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js
index 4b4b639c6..8e50e813d 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-71.js
@@ -10,30 +10,23 @@ description: >
     Object.defineProperties - 'configurable' property of 'descObj' is
     inherited accessor property without a get function (8.10.5 step
     4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var obj = {};
+var proto = {};
 
-        var obj = {};
-        var proto = {};
+Object.defineProperty(proto, "configurable", {
+    set: function () { }
+});
 
-        Object.defineProperty(proto, "configurable", {
-            set: function () { }
-        });
+var Con = function () { };
+Con.prototype = proto;
+var descObj = new Con();
 
-        var Con = function () { };
-        Con.prototype = proto;
-        var descObj = new Con();
+Object.defineProperties(obj, {
+    prop: descObj
+});
 
-        Object.defineProperties(obj, {
-            prop: descObj
-        });
-
-        var result1 = obj.hasOwnProperty("prop");
-        delete obj.prop;
-        var result2 = obj.hasOwnProperty("prop");
-
-        return result1 === true && result2 === true;
-    }
-runTestCase(testcase);
+assert(obj.hasOwnProperty("prop"));
+verifyNotConfigurable(obj, "prop");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js
index 6136a39e9..91adb0f85 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-85.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.7-5-b-85
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is undefined (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                configurable: undefined
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+Object.defineProperties(obj, {
+    property: {
+        configurable: undefined
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js
index 71374c29e..0873475de 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-86.js
@@ -9,23 +9,16 @@ es5id: 15.2.3.7-5-b-86
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is null (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
-
-        Object.defineProperties(obj, {
-            property: {
-                configurable: null
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+var obj = {};
 
+Object.defineProperties(obj, {
+    property: {
+        configurable: null
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js
index 0e2a6410e..a774714c8 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-88.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.7-5-b-88
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is false (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                configurable: false
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+Object.defineProperties(obj, {
+    property: {
+        configurable: false
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js
index cc88c7b20..74934fdab 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-89.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.7-5-b-89
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is 0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                configurable: 0
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+Object.defineProperties(obj, {
+    property: {
+        configurable: 0
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js
index aea69a8b4..fdd4ddfcf 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-90.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.7-5-b-90
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is +0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                configurable: +0
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+Object.defineProperties(obj, {
+    property: {
+        configurable: +0
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js
index 594e4ed61..514017fca 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-91.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.7-5-b-91
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is -0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                configurable: -0
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+Object.defineProperties(obj, {
+    property: {
+        configurable: -0
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js
index eb014efe3..d9d7e3f39 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-92.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.7-5-b-92
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is NaN (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                configurable: NaN
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+Object.defineProperties(obj, {
+    property: {
+        configurable: NaN
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js
index f98aad24c..f7d7ef3a4 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-5-b-95.js
@@ -9,22 +9,16 @@ es5id: 15.2.3.7-5-b-95
 description: >
     Object.defineProperties - value of 'configurable' property of
     'descObj' is empty string (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var obj = {};
+var obj = {};
 
-        Object.defineProperties(obj, {
-            property: {
-                configurable: ""
-            }
-        });
-
-        var hadOwnProperty = obj.hasOwnProperty("property");
-
-        delete obj.property;
-
-        return obj.hasOwnProperty("property") && hadOwnProperty;
+Object.defineProperties(obj, {
+    property: {
+        configurable: ""
     }
-runTestCase(testcase);
+});
+
+assert(obj.hasOwnProperty("property"));
+verifyNotConfigurable(obj, "property");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js
index 1a8c5d204..5b6201274 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-115.js
@@ -11,38 +11,24 @@ description: >
     property of 'O', the [[Value]] field of 'desc' is absent, test
     every field in 'desc' is same with corresponding attribute value
     of the length property in 'O' (15.4.5.1 step 3.a.i)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var arr = [];
+var arr = [];
 
-        Object.defineProperties(arr, {
-            length: {
-                writable: true,
-                enumerable: false,
-                configurable: false
-            }
-        });
-
-        var verifyValue = false;
-        verifyValue = (arr.length === 0);
+Object.defineProperties(arr, {
+    length: {
+        writable: true,
+        enumerable: false,
+        configurable: false
+    }
+});
 
-        var verifyWritable = false;
-        arr.length = 2;
-        verifyWritable = (arr.length === 2);
+assert.sameValue(arr.length, 0);
 
-        var verifyEnumerable = false;
-        for (var p in arr) {
-            if (p === "length") {
-                verifyEnumerable = true;
-            }
-        }
+arr.length = 2;
+assert.sameValue(arr.length, 2);
 
-        var verifyConfigurable = false;
-        delete arr.length;
-        verifyConfigurable = arr.hasOwnProperty("length");
+verifyNotEnumerable(arr, "length");
 
-        return verifyValue && verifyWritable && !verifyEnumerable && verifyConfigurable;
-    }
-runTestCase(testcase);
+verifyNotConfigurable(arr, "length");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js
index de3c9f8e6..343ea4ce7 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-163.js
@@ -13,21 +13,22 @@ description: >
     length property is set to false at last after deleting properties
     with large index named if the [[Writable]] field of 'desc' is
     false (15.4.5.1 step 3.i.ii)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
     
-        var arr = [0, 1];
+var arr = [0, 1];
 
-        Object.defineProperties(arr, {
-            length: {
-                value: 1,
-                writable: false
-            }
-        });
-
-        arr.length = 10; //try to overwrite length value of arr
-        return !arr.hasOwnProperty("1") && arr.length === 1 && arr[0] === 0;
+Object.defineProperties(arr, {
+    length: {
+        value: 1,
+        writable: false
     }
-runTestCase(testcase);
+});
+
+//try to overwrite length value of arr
+verifyNotWritable(arr, "length")
+
+assert(!arr.hasOwnProperty("1"));
+assert.sameValue(arr.length, 1);
+assert.sameValue(arr[0], 0);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js
index b88842d5e..eedc9c6aa 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-164.js
@@ -12,31 +12,29 @@ description: >
     of the length property, test the [[Writable]] attribute of the
     length property in 'O' is set as true before deleting properties
     with large index named (15.4.5.1 step 3.i.iii)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var arr = [0, 1, 2];
-        var result = 0;
+var arr = [0, 1, 2];
+var result = 0;
 
-        try {
-            Object.defineProperty(arr, "1", {
-                configurable: false
-            });
+try {
+    Object.defineProperty(arr, "1", {
+        configurable: false
+    });
 
-            Object.defineProperties(arr, {
-                length: {
-                    value: 0,
-                    writable: false
-                }
-            });
-
-            return false;
-        } catch (e) {
-            result = (arr.length === 2);
-            arr.length = 10;
-            return (e instanceof TypeError) && result && arr.length === 2;
+    Object.defineProperties(arr, {
+        length: {
+            value: 0,
+            writable: false
         }
-    }
-runTestCase(testcase);
+    });
+
+    $ERROR("expected to throw TypeError")
+} catch (e) {
+    assert(e instanceof TypeError);
+    assert.sameValue(arr.length, 2);
+    verifyNotWritable(arr, "length");
+}
+
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js
index 2dcebe5c5..c934263d7 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-176.js
@@ -13,29 +13,31 @@ description: >
     length property is set to false at last when the [[Writable]]
     field of 'desc' is false and 'O' contains non-configurable large
     index named property (15.4.5.1 step 3.l.iii.2)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var arr = [0, 1];
+var arr = [0, 1];
 
-        try {
-            Object.defineProperty(arr, "1", {
-                configurable: false
-            });
+try {
+    Object.defineProperty(arr, "1", {
+        configurable: false
+    });
 
-            Object.defineProperties(arr, {
-                length: {
-                    value: 1,
-                    writable: false
-                }
-            });
-            return false;
-        } catch (e) {
-            arr.length = 10; //try to overwrite length value of arr
-            return e instanceof TypeError && arr.hasOwnProperty("1") &&
-                arr.length === 2 && arr[0] === 0 && arr[1] === 1;
+    Object.defineProperties(arr, {
+        length: {
+            value: 1,
+            writable: false
         }
-    }
-runTestCase(testcase);
+    });
+
+    $ERROR("Expected to throw TypeError");
+} catch (e) {
+    assert(e instanceof TypeError);
+    assert(arr.hasOwnProperty("1"));
+    verifyNotWritable(arr, "length");
+    assert.sameValue(arr[0], 0);
+    assert.sameValue(arr[1], 1);
+    assert.sameValue(arr.length, 2)
+}
+
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js
index 0fe59a849..ee384faa5 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-177.js
@@ -13,25 +13,20 @@ description: >
     length property is set to false at last when the [[Writable]]
     field of 'desc' is false and 'O' doesn't contain non-configurable
     large index named property (15.4.5.1 step 3.m)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
     
-        var arr = [0, 1];
+var arr = [0, 1];
 
-        try {
-            Object.defineProperties(arr, {
-                length: {
-                    value: 0,
-                    writable: false
-                }
-            });
-
-            arr.length = 10; //try to overwrite length value of arr
-            return !arr.hasOwnProperty("1") && arr.length === 0 && !arr.hasOwnProperty("0");
-        } catch (e) {
-            return false;
-        }
+Object.defineProperties(arr, {
+    length: {
+        value: 0,
+        writable: false
     }
-runTestCase(testcase);
+});
+
+assert(!arr.hasOwnProperty("1"));
+assert.sameValue(arr.length, 0);
+assert(!arr.hasOwnProperty("0"));
+verifyNotWritable(arr, "length");
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js
index 1303906dc..c4700d07c 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-197.js
@@ -12,28 +12,21 @@ description: >
     [[Writable]] of 'P' property in 'Attributes' is set as false value
     if [[Writable]] is absent in data descriptor 'desc'  (15.4.5.1
     step 4.c)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var arr = [];
-        var isOwnProperty = false;
-        var canWritable = false;
+var arr = [];
+var isOwnProperty = false;
+var canWritable = false;
 
-        Object.defineProperties(arr, {
-            "0": {
-                value: 1001,
-                enumerable: true,
-                configurable: false
-            }
-        });
-
-        isOwnProperty = arr.hasOwnProperty("0");
-
-        arr[0] = 12;
-
-        canWritable = (arr[0] === 12);
-
-        return isOwnProperty && !canWritable && arr[0] === 1001;
+Object.defineProperties(arr, {
+    "0": {
+        value: 1001,
+        enumerable: true,
+        configurable: false
     }
-runTestCase(testcase);
+});
+
+assert(arr.hasOwnProperty("0"));
+verifyNotWritable(arr, "0");
+assert.sameValue(arr[0], 1001);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js
index e2b155f59..e54516952 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-199.js
@@ -12,25 +12,21 @@ description: >
     [[Configurable]] of 'P' property in 'Attributes' is set as false
     value if [[Configurable]] is absent in data descriptor 'desc'
     (15.4.5.1 step 4.c)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
-        var arr = [];
-        var beforeDeleted = false;
-        var afterDeleted = false;
+var arr = [];
+var beforeDeleted = false;
+var afterDeleted = false;
 
-        Object.defineProperties(arr, {
-            "0": {
-                value: 1001,
-                writable: true,
-                enumerable: true
-            }
-        });
-
-        beforeDeleted = arr.hasOwnProperty("0");
-        delete arr[0];
-        afterDeleted = arr.hasOwnProperty("0");
-        return beforeDeleted && afterDeleted && arr[0] === 1001;
+Object.defineProperties(arr, {
+    "0": {
+        value: 1001,
+        writable: true,
+        enumerable: true
     }
-runTestCase(testcase);
+});
+
+assert(arr.hasOwnProperty("0"));
+verifyNotConfigurable(arr, "0");
+assert(arr.hasOwnProperty("0"));
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js
index b573b3b85..a2c04a3d4 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-44.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.7-6-a-44
 description: >
     Object.defineProperties - both desc.value and P.value are NaN
     (8.12.9 step 6)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
         var obj = {};
 
@@ -42,4 +41,3 @@ function testcase() {
 
         return verifyConfigurable && !verifyEnumerable && verifyValue;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js
index 1fe32cd97..cadd6a94c 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-57.js
@@ -9,42 +9,28 @@ es5id: 15.2.3.7-6-a-57
 description: >
     Object.defineProperties - both desc.[[Get]] and P.[[Get]] are two
     objects which refer to the same object (8.12.9 step 6)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
+var obj = {};
 
-        function get_Func() {
-            return 10;
-        }
+function get_Func() {
+    return 10;
+}
 
-        Object.defineProperty(obj, "foo", {
-            get: get_Func
-        });
+Object.defineProperty(obj, "foo", {
+    get: get_Func
+});
 
-        Object.defineProperties(obj, {
-            foo: {
-                get: get_Func
-            }
-        });
-
-        var verifyEnumerable = false;
-        for (var p in obj) {
-            if (p === "foo") {
-                verifyEnumerable = true;
-            }
-        }
+Object.defineProperties(obj, {
+    foo: {
+        get: get_Func
+    }
+});
 
-        var verifyValue = false;
-        verifyValue = (obj.foo === 10);
+verifyNotEnumerable(obj, "foo");
+assert.sameValue(obj.foo, 10);
 
-        var verifyConfigurable = false;
-        delete obj.foo;
-        verifyConfigurable = obj.hasOwnProperty("foo");
+verifyNotConfigurable(obj, "foo")
 
-        var desc = Object.getOwnPropertyDescriptor(obj, "foo");
-        return verifyConfigurable && !verifyEnumerable && verifyValue && typeof (desc.set) === "undefined" && desc.get === get_Func;
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js
index d800cad55..b24209d85 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-67.js
@@ -10,48 +10,39 @@ description: >
     Object.defineProperties throws TypeError when P is accessor
     property and P.configurable is false, desc is data property
     (8.12.9 step 9.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
+var obj = {};
 
-        var obj = {};
+function get_Func() {
+    return 10;
+}
 
-        function get_Func() {
-            return 10;
-        }
+Object.defineProperty(obj, "foo", {
+    get: get_Func,
+    configurable: false
+});
 
-        Object.defineProperty(obj, "foo", {
-            get: get_Func,
-            configurable: false
-        });
-
-        try {
-            Object.defineProperties(obj, {
-                foo: {
-                    value: 11
-                }
-            });
-            return false;
-        } catch (e) {
-            var verifyEnumerable = false;
-            for (var p in obj) {
-                if (p === "foo") {
-                    verifyEnumerable = true;
-                }
-            }
-
-            var verifyValue = false;
-            verifyValue = (obj.foo === 10);
-
-            var desc = Object.getOwnPropertyDescriptor(obj, "foo");
-
-            var verifyConfigurable = false;
-            delete obj.foo;
-            verifyConfigurable = obj.hasOwnProperty("foo");
-
-            return e instanceof TypeError && verifyConfigurable && !verifyEnumerable &&
-                verifyValue && typeof (desc.set) === "undefined" && desc.get === get_Func;
+try {
+    Object.defineProperties(obj, {
+        foo: {
+            value: 11
         }
-    }
-runTestCase(testcase);
+    });
+
+    $ERROR("Expected TypeError");
+} catch (e) {
+    assert(e instanceof TypeError);
+    verifyNotEnumerable(obj, "foo");
+
+    assert.sameValue(obj.foo, 10);
+
+    verifyNotConfigurable(obj, "foo");
+
+    var desc = Object.getOwnPropertyDescriptor(obj, "foo");
+
+    assert.sameValue(typeof (desc.set), "undefined");
+    assert.sameValue(desc.get, get_Func);
+}
+
diff --git a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js
index 305a4fc34..efbcc1562 100644
--- a/test/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js
+++ b/test/built-ins/Object/defineProperties/15.2.3.7-6-a-75.js
@@ -10,43 +10,26 @@ description: >
     Object.defineProperties will not throw TypeError if P.configurable
     is false, P.writalbe is false, P.value is NaN and properties.value
     is NaN (8.12.9 step 10.a.ii.1)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
-        var obj = {};
-        var accessed = false;
+var obj = {};
+var accessed = false;
 
-        Object.defineProperty(obj, "foo", {
-            value: NaN,
-            writable: false,
-            configurable: false
-        });
+Object.defineProperty(obj, "foo", {
+    value: NaN,
+    writable: false,
+    configurable: false
+});
 
-        Object.defineProperties(obj, {
-            foo: {
-                value: NaN
-            }
-        });
-
-        var verifyEnumerable = false;
-        for (var p in obj) {
-            if (p === "foo") {
-                verifyEnumerable = true;
-            }
-        }
-
-        obj.prop = "overrideData";
-        var verifyValue = false;
-        verifyValue = obj.foo !== obj.foo && isNaN(obj.foo);
-
-        var desc = Object.getOwnPropertyDescriptor(obj, "foo");
+Object.defineProperties(obj, {
+    foo: {
+        value: NaN
+    }
+});
 
-        var verifyConfigurable = false;
-        delete obj.foo;
-        verifyConfigurable = obj.hasOwnProperty("foo");
+verifyNotEnumerable(obj, "foo");
+verifyNotWritable(obj, "foo");
+verifyNotConfigurable(obj, "foo");
 
-        return verifyValue && !verifyEnumerable && verifyConfigurable;
-    }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-100.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-100.js
index ea910978e..11288266c 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-100.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-100.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-100
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     null (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { configurable: null });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-102.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-102.js
index 895f16d93..260f289e5 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-102.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-102.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-102
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     false (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { configurable: false });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-103.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-103.js
index 893ab5fd4..e0c5d1a0a 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-103.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-103.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-103
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { configurable: 0 });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-104.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-104.js
index af48c109c..b6f676fd4 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-104.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-104.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-104
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     +0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "property", { configurable: +0 });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-105.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-105.js
index 977f5035f..7b87534a8 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-105.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-105.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-105
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     -0 (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { configurable: -0 });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-106.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-106.js
index 5861657f4..6244d2598 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-106.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-106.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-106
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     NaN (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { configurable: NaN });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-109.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-109.js
index a02187def..f0a80e849 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-109.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-109.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-109
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     an empty string (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { configurable: "" });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-152.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-152.js
index fd02b8007..8ac30dace 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-152.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-152.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-152
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is
     present (8.10.5 step 6)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var attr = {
@@ -29,4 +28,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === false;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-153.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-153.js
index 9a762117c..45883fe9e 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-153.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-153.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-153
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is not
     present  (8.10.5 step 6)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var attr = {
@@ -29,4 +28,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === false;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-162.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-162.js
index 93b038073..59694cf22 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-162.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-162.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-162
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is own
     accessor property without a get function  (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var attr = {};
@@ -30,4 +29,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-163.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-163.js
index eec5ba503..d3ae486cc 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-163.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-163.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'writable' property in 'Attributes' is own
     accessor property(without a get function) that overrides an
     inherited accessor property  (8.10.5 step 6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var proto = {};
@@ -41,4 +40,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-164.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-164.js
index 6af11bec0..44f347895 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-164.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-164.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'writable' property in 'Attributes' is an
     inherited accessor property without a get function  (8.10.5 step
     6.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var proto = {};
@@ -36,4 +35,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-171-1.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-171-1.js
index 5489c6786..80b1ed0fe 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-171-1.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-171-1.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'Attributes' is a Date object that uses
     Object's [[Get]] method to access the 'writable' property of
     prototype object (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
         try {
             Date.prototype.writable = true;
@@ -33,4 +32,3 @@ function testcase() {
             delete Date.prototype.writable;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-178.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-178.js
index 74c841e6a..1a40c0e7d 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-178.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-178.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-178
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is
     undefined  (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "property", {
@@ -27,4 +26,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-179.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-179.js
index 3cbdc5966..8e954ed5e 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-179.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-179.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-179
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is
     null  (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { writable: null });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-181.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-181.js
index 7588e920a..26858aaff 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-181.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-181.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-181
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is
     false  (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { writable: false });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-182.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-182.js
index 071ace447..382d6002b 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-182.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-182.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-182
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is 0
     (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { writable: 0 });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-183.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-183.js
index ed45254df..a3b58bfb3 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-183.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-183.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-183
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is +0
     (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "property", { writable: +0 });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-184.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-184.js
index a568063d0..3af70ccd0 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-184.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-184.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-184
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is -0
     (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { writable: -0 });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-185.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-185.js
index 0a06885de..0933e5afc 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-185.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-185.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-185
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is
     NaN  (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { writable:  NaN});
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-188.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-188.js
index 28f3049f0..d76ebccad 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-188.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-188.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-188
 description: >
     Object.defineProperty - 'writable' property in 'Attributes' is an
     empty string  (8.10.5 step 6.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "property", { writable: "" });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeWrite === true && afterWrite === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-236.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-236.js
index 190c9dfb8..2402f3303 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-236.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-236.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-236
 description: >
     Object.defineProperty - 'set' property in 'Attributes' is not
     present (8.10.5 step 8)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "property", {
@@ -25,4 +24,3 @@ function testcase() {
         var desc = Object.getOwnPropertyDescriptor(obj, "property");
         return obj.hasOwnProperty("property") && obj.property === 11 && typeof desc.set === "undefined";
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-245.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-245.js
index 62697ae08..73238c9db 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-245.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-245.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-245
 description: >
     Object.defineProperty - 'set' property in 'Attributes' is own
     accessor property without a get function (8.10.5 step 8.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var attributes = {};
@@ -28,4 +27,3 @@ function testcase() {
         return obj.hasOwnProperty("property") && typeof obj.property === "undefined" &&
             typeof desc.set === "undefined";
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-246.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-246.js
index c103ec3cc..1c32ab0a6 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-246.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-246.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'set' property in 'Attributes' is own
     accessor property(without a get function) that overrides an
     inherited accessor property (8.10.5 step 8.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
         var proto = {};
         var data = "data";
@@ -38,4 +37,3 @@ function testcase() {
         obj.property = "overrideData";
         return obj.hasOwnProperty("property") && typeof obj.property === "undefined" && data === "data";
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-247.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-247.js
index 926b3bcab..f074f45cf 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-247.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-247.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'set' property in 'Attributes' is an
     inherited accessor property without a get function (8.10.5 step
     8.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
         var proto = {};
         Object.defineProperty(proto, "set", {
@@ -30,4 +29,3 @@ function testcase() {
         obj.property = "overrideData";
         return obj.hasOwnProperty("property") && typeof obj.property === "undefined";
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-261.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-261.js
index bfe3d3c77..71cb7f92e 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-261.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-261.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-261
 description: >
     Object.defineProperty - value of 'set' property in 'Attributes' is
     undefined (8.10.5 step 8.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "property", {
@@ -24,4 +23,3 @@ function testcase() {
         return obj.hasOwnProperty("property") && typeof obj.property === "undefined" &&
             typeof desc.set === "undefined";
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-73.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-73.js
index 18397ac58..e7fd0e0e5 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-73.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-73.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-73
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     present (8.10.5 step 4)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "property", {
@@ -27,4 +26,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-74.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-74.js
index 89ff175bb..18303ccb4 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-74.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-74.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-74
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     not present (8.10.5 step 4)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { value: 100 });
@@ -26,4 +25,3 @@ function testcase() {
         return beforeDeleted === true && afterDeleted === true;
 
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-76.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-76.js
index 5d6e235bf..c18a8614b 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-76.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-76.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-76
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     an inherited data property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         var proto = {
@@ -33,4 +32,3 @@ function testcase() {
         var afterDeleted = obj.hasOwnProperty("property");
         return beforeDeleted && afterDeleted && typeof (obj.property) === "undefined";
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-83.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-83.js
index cfb52b80a..025056104 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-83.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-83.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-83
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     own accessor property without a get function (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         var attr = {};
@@ -30,4 +29,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-84.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-84.js
index 233fecf25..f8d1d6457 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-84.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-84.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     own accessor property(without a get function) that overrides an
     inherited accessor property (8.10.5 step 4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var proto = {};
@@ -41,4 +40,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-85.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-85.js
index e5d79605b..704e84f69 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-85.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-85.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     an inherited accessor property without a get function (8.10.5 step
     4.a)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var proto = {};
@@ -36,4 +35,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-3-99.js b/test/built-ins/Object/defineProperty/15.2.3.6-3-99.js
index 3a724aaf7..5931b7eb7 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-3-99.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-3-99.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-3-99
 description: >
     Object.defineProperty - 'configurable' property in 'Attributes' is
     undefined (8.10.5 step 4.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = { };
 
         Object.defineProperty(obj, "property", { configurable: undefined });
@@ -25,4 +24,3 @@ function testcase() {
 
         return beforeDeleted === true && afterDeleted === true;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-118.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-118.js
index b9322775d..9dcc95272 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-118.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-118.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'O' is an Array, 'name' is the length
     property of 'O', the [[Value]] field of 'desc' is absent, test
     every field in 'desc' is absent (15.4.5.1 step 3.a.i)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var arrObj = [];
 
         Object.defineProperty(arrObj, "length", {});
@@ -38,4 +37,3 @@ function testcase() {
 
         return verifyValue && verifyWritable && !verifyEnumerable && verifyConfigurable;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-119.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-119.js
index 1fc02fddb..6ac91c4fd 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-119.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-119.js
@@ -11,10 +11,9 @@ description: >
     property of 'O', the [[Value]] field of 'desc' is absent, test
     every field in 'desc' is same with corresponding attribute value
     of the length property in 'O' (15.4.5.1 step 3.a.i)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
         var arrObj = [];
         Object.defineProperty(arrObj, "length", {
@@ -43,4 +42,3 @@ function testcase() {
 
         return verifyValue && verifyWritable && !verifyEnumerable && verifyConfigurable;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-167.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-167.js
index 03dd2fbab..bf41f0119 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-167.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-167.js
@@ -13,10 +13,9 @@ description: >
     length property is set to false after deleting properties with
     large index named if the [[Writable]] field of 'desc' is false
     (15.4.5.1 step 3.i.ii)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
         var arrObj = [0, 1];
 
@@ -31,4 +30,3 @@ function testcase() {
 
         return indexDeleted && arrObj.length === 1;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-181.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-181.js
index b25f7a081..d7ba9c904 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-181.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-181.js
@@ -13,10 +13,9 @@ description: >
     length property is set to false at last when the [[Writable]]
     field of 'desc' is false and 'O' doesn't contain non-configurable
     large index named property (15.4.5.1 step 3.m)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
 
         var arrObj = [0, 1];
 
@@ -28,4 +27,3 @@ function testcase() {
         arrObj.length = 10; //try to overwrite length value of arr
         return !arrObj.hasOwnProperty("1") && arrObj.length === 0;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-217.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-217.js
index b61efc91c..60c8b09ac 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-217.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-217.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - 'O' is an Array, 'name' is an array index
     property, both the [[Value]] field of 'desc' and the [[Value]]
     attribute value of 'name' are NaN  (15.4.5.1 step 4.c)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var arrObj = [];
 
         Object.defineProperty(arrObj, "0", { value: NaN });
@@ -40,4 +39,3 @@ function testcase() {
 
         return hasProperty && verifyValue && verifyWritable && !verifyEnumerable && verifyConfigurable;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-254.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-254.js
index ea8a6097e..cfbbfc23a 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-254.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-254.js
@@ -13,10 +13,9 @@ description: >
     false, test TypeError is not thrown if the [[Set]] field of 'desc'
     is present, and the [[Set]] field of 'desc' and the [[Set]]
     attribute value of 'name' are undefined (15.4.5.1 step 4.c)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var arrObj = [];
 
         Object.defineProperty(arrObj, "1", {
@@ -47,4 +46,3 @@ function testcase() {
 
         return hasProperty && verifyGet && verifySet && !verifyEnumerable && verifyConfigurable;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-255.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-255.js
index 590d8aeb9..03709f3b5 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-255.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-255.js
@@ -14,10 +14,9 @@ description: >
     present, and the [[Get]] field of 'desc' and the [[Get]] attribute
     value of 'name' are two objects which refer to the different
     objects (15.4.5.1 step 4.c)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var arrObj = [];
 
         function getFunc() {
@@ -58,4 +57,3 @@ function testcase() {
                 verifySet && !verifyEnumerable && verifyConfigurable;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-256.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-256.js
index e0d480001..9d671b1d3 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-256.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-256.js
@@ -13,10 +13,9 @@ description: >
     false, test TypeError is thrown if the [[Get]] field of 'desc' is
     present, and the [[Get]] field of 'desc' is an object and the
     [[Get]] attribute value of 'name' is undefined (15.4.5.1 step 4.c)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var arrObj = [];
         function getFunc() {
             return 12;
@@ -54,4 +53,3 @@ function testcase() {
                 verifySet && !verifyEnumerable && verifyConfigurable;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-335.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-335.js
index 435c74aa3..e3b88b85e 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-335.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-335.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-335
 description: >
     ES5 Attributes - property ([[Writable]] is true, [[Enumerable]] is
     true, [[Configurable]] is false) is undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
         var afterDelete = obj.hasOwnProperty("prop");
         return beforeDelete && obj.prop === 2010 && afterDelete;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-349.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-349.js
index c2996028c..8d1167131 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-349.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-349.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-349
 description: >
     ES5 Attributes - property ([[Writable]] is true, [[Enumerable]] is
     false, [[Configurable]] is false) is undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
         var afterDelete = obj.hasOwnProperty("prop");
         return beforeDelete && obj.prop === 2010 && afterDelete;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-15.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-15.js
index 03a93ff7f..f5cca7c55 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-15.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-15.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - Named property 'P' with attributes
     [[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: true
     is non-writable using simple assignment, 'A' is an Array object
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = [];
 
         Object.defineProperty(obj, "prop", {
@@ -27,4 +26,3 @@ function testcase() {
 
         return verifyValue && obj.prop === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-16.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-16.js
index 765de208f..5c8c05a99 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-16.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-16.js
@@ -11,10 +11,9 @@ description: >
     attributes [[Writable]]: false, [[Enumerable]]: true,
     [[Configurable]] : true) is non-writable using simple assignment,
     'O' is an Arguments object
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = (function () {
             return arguments;
         }());
@@ -30,4 +29,3 @@ function testcase() {
 
         return valueVerify && obj[0] === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-6.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-6.js
index 21fbcfc95..d5750e786 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-6.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-6.js
@@ -10,10 +10,9 @@ description: >
     Object.defineProperty - Indexed property 'P' with attributes
     [[Writable]]: false, [[Enumerable]]: true, [[Configurable]]: true
     is non-writable using simple assignment, 'A' is an Array object
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = [];
 
         Object.defineProperty(obj, "0", {
@@ -27,4 +26,3 @@ function testcase() {
 
         return verifyValue && obj[0] === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-7.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-7.js
index 8cfed4fc2..fe3a1c41a 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-7.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-7.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - property 'P' with attributes [[Writable]]: false,
     [[Enumerable]]: true, [[Configurable]] : true) is non-writable
     using simple assignment, 'O' is an Arguments object
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = (function () {
             return arguments;
         }());
@@ -29,4 +28,3 @@ function testcase() {
 
         return valueVerify && obj.prop === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-8.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-8.js
index 8c3d61e92..86ec8cbdd 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-354-8.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-354-8.js
@@ -11,11 +11,10 @@ description: >
     [[Enumerable]]: true, [[Configurable]]: true is non-writable using
     simple assignment, 'O' is the global object
 includes:
-    - runTestCase.js
+    - propertyHelper.js
     - fnGlobalObject.js
 ---*/
 
-function testcase() {
         var obj = fnGlobalObject();
         try {
             Object.defineProperty(obj, "prop", {
@@ -32,4 +31,3 @@ function testcase() {
             delete obj.prop;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-354.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-354.js
index 928550170..288dc7477 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-354.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-354.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-354
 description: >
     ES5 Attributes - property ([[Writable]] is false, [[Enumerable]]
     is true, [[Configurable]] is true) is unwritable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
 
         return propertyDefineCorrect && obj.prop === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-361.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-361.js
index 79ec2298e..b19db726e 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-361.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-361.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-361
 description: >
     ES5 Attributes - property ([[Writable]] is false, [[Enumerable]]
     is true, [[Configurable]] is false) is unwritable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
 
         return propertyDefineCorrect && obj.prop === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-363.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-363.js
index 85d87f129..835b48ed8 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-363.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-363.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-363
 description: >
     ES5 Attributes - property ([[Writable]] is false, [[Enumerable]]
     is true, [[Configurable]] is false) is undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
         var afterDelete = obj.hasOwnProperty("prop");
         return beforeDelete && obj.prop === 2010 && afterDelete;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-368.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-368.js
index 3b2d1fb08..4b181c79d 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-368.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-368.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-368
 description: >
     ES5 Attributes - property ([[Writable]] is false, [[Enumerable]]
     is false, [[Configurable]] is true) is unwritable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
 
         return propertyDefineCorrect && obj.prop === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-375.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-375.js
index 003d4cdfc..35a4aec7a 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-375.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-375.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-375
 description: >
     ES5 Attributes - property ([[Writable]] is false, [[Enumerable]]
     is false, [[Configurable]] is false) is unwritable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
 
         return propertyDefineCorrect && obj.prop === 2010;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-377.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-377.js
index 9a0819298..335e8cca2 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-377.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-377.js
@@ -9,10 +9,9 @@ es5id: 15.2.3.6-4-377
 description: >
     ES5 Attributes - property ([[Writable]] is false, [[Enumerable]]
     is false, [[Configurable]] is false) is undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -26,4 +25,3 @@ function testcase() {
         var afterDelete = obj.hasOwnProperty("prop");
         return beforeDelete && obj.prop === 2010 && afterDelete;
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-405.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-405.js
index 4a8308f4f..18b1bdf26 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-405.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-405.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - Failed to add a property to an object when the
     object's object has a property with same name and [[Writable]]
     attribute is set to false (Number instance)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         try {
             Object.defineProperty(Number.prototype, "prop", {
                 value: 1001,
@@ -29,4 +28,3 @@ function testcase() {
             delete Number.prototype.prop;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-410.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-410.js
index 7f0a26713..3a56b4ec5 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-410.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-410.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - Failed to add a property to an object when the
     object's prototype has a property with the same name and
     [[Writable]] set to false (JSON)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         try {
             Object.defineProperty(Object.prototype, "prop", {
                 value: 1001,
@@ -28,4 +27,3 @@ function testcase() {
             delete Object.prototype.prop;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-415.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-415.js
index a94009512..8f0d35014 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-415.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-415.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - Failed to add properties to an object when the
     object's prototype has properties with the same name and
     [[Writable]] set to false (Object.create)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var appointment = new Object();
 
         Object.defineProperty(appointment, "startTime", {
@@ -51,4 +50,3 @@ function testcase() {
             teamMeeting.startTime === 1001 &&
             teamMeeting.conferenceCall === "In-person meeting";
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-420.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-420.js
index a24612f20..de25ea712 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-420.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-420.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - Failed to add a property to an object when the
     object's prototype has a property with the same name and
     [[Writable]] set to false(Function.prototype.bind)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var foo = function () { };
         try {
             Object.defineProperty(Function.prototype, "prop", {
@@ -31,4 +30,3 @@ function testcase() {
             delete Function.prototype.prop;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-429.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-429.js
index 2b5d02d37..87accfa68 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-429.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-429.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is undefined,
     [[Enumerable]] is true, [[Configurable]] is true) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -33,4 +32,3 @@ function testcase() {
 
         return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-434.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-434.js
index 24768ee82..e10127daa 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-434.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-434.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - property ([[Get]] is undefined, [[Set]] is
     undefined, [[Enumerable]] is true, [[Configurable]] is false) is
     undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -30,4 +29,3 @@ function testcase() {
 
         return propertyDefineCorrect && desc.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-438.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-438.js
index 674c7b6d4..7b46c7f33 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-438.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-438.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is undefined,
     [[Enumerable]] is true, [[Configurable]] is false) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -38,4 +37,3 @@ function testcase() {
             return desc1.configurable === false && desc2.configurable === false && obj.hasOwnProperty("prop") && e instanceof TypeError;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-447.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-447.js
index 92a88f912..be415a16b 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-447.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-447.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is undefined,
     [[Enumerable]] is false, [[Configurable]] is true) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -33,4 +32,3 @@ function testcase() {
 
         return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-452.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-452.js
index b66aecd8e..e46831027 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-452.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-452.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - property ([[Get]] is undefined, [[Set]] is
     undefined, [[Enumerable]] is false, [[Configurable]] is false) is
     undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -30,4 +29,3 @@ function testcase() {
 
         return propertyDefineCorrect && desc.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-456.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-456.js
index 89b1e2645..26d42d007 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-456.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-456.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is undefined,
     [[Enumerable]] is false, [[Configurable]] is false) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         Object.defineProperty(obj, "prop", {
@@ -38,4 +37,3 @@ function testcase() {
             return desc1.configurable === false && desc2.configurable === false && obj.hasOwnProperty("prop") && e instanceof TypeError;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-465.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-465.js
index 171489311..e1b3a5e31 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-465.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-465.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is a Function,
     [[Enumerable]] is true, [[Configurable]] is true) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var verifySetFunc = "data";
@@ -38,4 +37,3 @@ function testcase() {
 
         return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-470.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-470.js
index 53caecb88..a63c2ed3e 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-470.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-470.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - property ([[Get]] is undefined, [[Set]] is a
     Function, [[Enumerable]] is true, [[Configurable]] is false) is
     undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var verifySetFunc = "data";
@@ -35,4 +34,3 @@ function testcase() {
 
         return propertyDefineCorrect && desc.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-474.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-474.js
index e423c5807..dcfa38cdf 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-474.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-474.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is a Function,
     [[Enumerable]] is true, [[Configurable]] is false) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var verifySetFunc = "data";
@@ -43,4 +42,3 @@ function testcase() {
             return desc1.configurable === false && desc2.configurable === false && obj.hasOwnProperty("prop") && e instanceof TypeError;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-483.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-483.js
index 7a7c24c57..8f7e5313e 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-483.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-483.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is a Function,
     [[Enumerable]] is false, [[Configurable]] is true) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var verifySetFunc = "data";
@@ -38,4 +37,3 @@ function testcase() {
 
         return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-488.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-488.js
index f207463a0..fafebace2 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-488.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-488.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - property ([[Get]] is undefined, [[Set]] is a
     Function, [[Enumerable]] is false, [[Configurable]] is false) is
     undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var verifySetFunc = "data";
@@ -35,4 +34,3 @@ function testcase() {
 
         return propertyDefineCorrect && desc.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-492.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-492.js
index 68d32e80b..f90c1442f 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-492.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-492.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is undefined, [[Set]] is a Function,
     [[Enumerable]] is false, [[Configurable]] is false) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var verifySetFunc = "data";
@@ -43,4 +42,3 @@ function testcase() {
             return desc1.configurable === false && desc2.configurable === false && obj.hasOwnProperty("prop") && e instanceof TypeError;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-501.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-501.js
index 2f3baf5c5..162369b35 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-501.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-501.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is a Function, [[Set]] is undefined,
     [[Enumerable]] is true, [[Configurable]] is true) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var getFunc = function () {
@@ -37,4 +36,3 @@ function testcase() {
 
         return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-506.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-506.js
index 5492204e7..3756fe5b1 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-506.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-506.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - property ([[Get]] is a Function, [[Set]] is
     undefined, [[Enumerable]] is true, [[Configurable]] is false) is
     undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var getFunc = function () {
@@ -34,4 +33,3 @@ function testcase() {
 
         return propertyDefineCorrect && desc.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-510.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-510.js
index 55ff979fa..01f739cc7 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-510.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-510.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is a Function, [[Set]] is undefined,
     [[Enumerable]] is true, [[Configurable]] is false) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var getFunc = function () {
@@ -42,4 +41,3 @@ function testcase() {
             return desc1.configurable === false && desc2.configurable === false && obj.hasOwnProperty("prop") && e instanceof TypeError;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-519.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-519.js
index fcf391261..080b2d1a8 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-519.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-519.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is a Function, [[Set]] is undefined,
     [[Enumerable]] is false, [[Configurable]] is true) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var getFunc = function () {
@@ -37,4 +36,3 @@ function testcase() {
 
         return desc1.configurable === true && desc2.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-524.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-524.js
index 663300157..065df6752 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-524.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-524.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - property ([[Get]] is a Function, [[Set]] is
     undefined, [[Enumerable]] is false, [[Configurable]] is false) is
     undeletable
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var getFunc = function () {
@@ -34,4 +33,3 @@ function testcase() {
 
         return propertyDefineCorrect && desc.configurable === false && obj.hasOwnProperty("prop");
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-528.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-528.js
index c16ac8de1..643e382e4 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-528.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-528.js
@@ -11,10 +11,9 @@ description: >
     accessor property ([[Get]] is a Function, [[Set]] is undefined,
     [[Enumerable]] is false, [[Configurable]] is false) to different
     value
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = {};
 
         var getFunc = function () {
@@ -42,4 +41,3 @@ function testcase() {
             return desc1.configurable === false && desc2.configurable === false && obj.hasOwnProperty("prop") && e instanceof TypeError;
         }
     }
-runTestCase(testcase);
diff --git a/test/built-ins/Object/defineProperty/15.2.3.6-4-531-6.js b/test/built-ins/Object/defineProperty/15.2.3.6-4-531-6.js
index f63bdf9e0..9b2f8b3da 100644
--- a/test/built-ins/Object/defineProperty/15.2.3.6-4-531-6.js
+++ b/test/built-ins/Object/defineProperty/15.2.3.6-4-531-6.js
@@ -10,10 +10,9 @@ description: >
     ES5 Attributes - Updating an indexed accessor property 'P' without
     [[Set]] using simple assignment is failed, 'A' is an Array object
     (8.12.5 step 5.b)
-includes: [runTestCase.js]
+includes: [propertyHelper.js]
 ---*/
 
-function testcase() {
         var obj = [];
 
         var verifySetFunc = "data";
@@ -33,4 +32,3 @@ function testcase() {
 
         return propertyDefineCorrect && typeof desc.set === "undefined" && obj[0] === "data";
     }
-runTestCase(testcase);