1 files changed, 82 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/debug-step.js b/deps/v8/test/mjsunit/debug-step.js
new file mode 100644
index 0000000000..453421864b
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+++ b/deps/v8/test/mjsunit/debug-step.js
@@ -0,0 +1,82 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --expose-debug-as debug
+// Get the Debug object exposed from the debug context global object.
+Debug = debug.Debug
+
+// Simple debug event handler which first time hit will perform 1000 steps and
+// second time hit will evaluate and store the value of "i". If requires that
+// the global property "state" is initially zero.
+
+var bp1, bp2;
+
+function listener(event, exec_state, event_data, data) {
+  if (event == Debug.DebugEvent.Break) {
+    if (state == 0) {
+      exec_state.prepareStep(Debug.StepAction.StepIn, 1000);
+      state = 1;
+    } else if (state == 1) {
+      result = exec_state.frame().evaluate("i").value();
+      // Clear the break point on line 2 if set.
+      if (bp2) {
+        Debug.clearBreakPoint(bp2);
+      }
+    }
+  }
+};
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+// Test debug event for break point.
+function f() {
+  for (i = 0; i < 1000; i++) {  //  Line 1.
+    x = 1;                      //  Line 2.
+  }
+};
+
+// Set a breakpoint on the for statement (line 1).
+bp1 = Debug.setBreakPoint(f, 1);
+
+// Check that performing 1000 steps will make i 499.
+state = 0;
+result = -1;
+f();
+assertEquals(499, result);
+
+// Check that performing 1000 steps with a break point on the statement in the
+// for loop (line 2) will only make i 0 as a real break point breaks even when
+// multiple steps have been requested.
+state = 0;
+result = -1;
+bp2 = Debug.setBreakPoint(f, 2);
+f();
+assertEquals(0, result);
+
+// Get rid of the debug event listener.
+Debug.setListener(null);
+\ No newline at end of file