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diff --git a/test/built-ins/TypedArrays/ctors/length-arg/toindex-length.js b/test/built-ins/TypedArrays/ctors/length-arg/toindex-length.js
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+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-typedarray-length
+description: >
+  ToIndex(length) operations
+info: |
+  22.2.4.2 TypedArray ( length )
+
+  This description applies only if the TypedArray function is called with at
+  least one argument and the Type of the first argument is not Object.
+
+  ...
+  3. Let elementLength be ? ToIndex(length).
+  ...
+includes: [testTypedArray.js]
+features: [TypedArray]
+---*/
+
+var items = [
+  [-0, 0, "-0"],
+  ["", 0, "the Empty string"],
+  ["0", 0, "string '0'"],
+  ["1", 1, "string '1'"],
+  [true, 1, "true"],
+  [false, 0, "false"],
+  [NaN, 0, "NaN"],
+  [null, 0, "null"],
+  [undefined, 0, "undefined"],
+  [0.1, 0, "0.1"],
+  [0.9, 0, "0.9"],
+  [1.1, 1, "1.1"],
+  [1.9, 1, "1.9"],
+  [-0.1, 0, "-0.1"],
+  [-0.99999, 0, "-0.99999"]
+];
+
+testWithTypedArrayConstructors(function(TA) {
+  items.forEach(function(item) {
+    var len = item[0];
+    var expected = item[1];
+    var name = item[2];
+
+    var typedArray = new TA(len);
+    assert.sameValue(typedArray.length, expected, name + " length");
+    assert.sameValue(typedArray.constructor, TA, name + " constructor");
+    assert.sameValue(
+      Object.getPrototypeOf(typedArray),
+      TA.prototype,
+      name + " prototype"
+    );
+  });
+});