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| 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --expose-debug-as debug |
| 6 // Tests stepping into through Array.prototype.forEach callbacks. |
| 7 |
| 8 Debug = debug.Debug |
| 9 var exception = null; |
| 10 var break_count = 0; |
| 11 var expected_breaks = -1; |
| 12 |
| 13 function listener(event, exec_state, event_data, data) { |
| 14 try { |
| 15 if (event == Debug.DebugEvent.Break) { |
| 16 assertTrue(exec_state.frameCount() != 0, "FAIL: Empty stack trace"); |
| 17 if (!break_count) { |
| 18 // Count number of expected breakpoints in this source file. |
| 19 var source_text = exec_state.frame(0).func().script().source(); |
| 20 expected_breaks = source_text.match(/\/\/\s*Break\s+\d+\./g).length; |
| 21 print("Expected breaks: " + expected_breaks); |
| 22 } |
| 23 var source = exec_state.frame(0).sourceLineText(); |
| 24 print("paused at: " + source); |
| 25 assertTrue(source.indexOf("// Break " + break_count + ".") > 0, |
| 26 "Unexpected pause at: " + source + "\n" + |
| 27 "Expected: // Break " + break_count + "."); |
| 28 ++break_count; |
| 29 if (break_count !== expected_breaks) { |
| 30 exec_state.prepareStep(Debug.StepAction.StepIn, 1); |
| 31 } |
| 32 } |
| 33 } catch(e) { |
| 34 exception = e; |
| 35 print(e, e.stack); |
| 36 } |
| 37 }; |
| 38 |
| 39 Debug.setListener(listener); |
| 40 |
| 41 debugger; // Break 0. |
| 42 [1,2].forEach(callback); // Break 1. |
| 43 |
| 44 function callback(x) { |
| 45 return x; // Break 2. // Break 4. |
| 46 } // Break 3. // Break 5. |
| 47 |
| 48 assertNull(exception); // Break 6. |
| 49 assertEquals(expected_breaks, break_count); |
| 50 |
| 51 Debug.setListener(null); |
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