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); 31 } 32 } 33 } catch(e) { 34 exception = e; 35 print(e, e.stack); 36 } 37 }; 38 39 Debug.setListener(listener); 40 var bound_callback = callback.bind(null); 41 42 debugger; // Break 0. 43 [1,2].forEach(callback); // Break 1. 44 [3,4].forEach(bound_callback); // Break 6. 45 46 function callback(x) { 47 return x; // Break 2. // Break 4. // Break 7. // Break 9. 48 } // Break 3. // Break 5. // Break 8. // Break 10. 49 50 assertNull(exception); // Break 11. 51 assertEquals(expected_breaks, break_count); 52 53 Debug.setListener(null); 54
