v8/test/mjsunit/debug-step-into-valueof.js
yangguo 81e131ce48 [debugger] flood function for stepping before calling it.
R=verwaest@chromium.org

Committed: https://crrev.com/93eb633214e0f97bf70ae30d2a07b7fbbaa78266
Cr-Commit-Position: refs/heads/master@{#32285}

Review URL: https://codereview.chromium.org/1463803002

Cr-Commit-Position: refs/heads/master@{#32339}
2015-11-26 14:12:18 +00:00

36 lines
942 B
JavaScript

// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --expose-debug-as debug
Debug = debug.Debug
var exception = null;
var break_count = 0;
function listener(event, exec_state, event_data, data) {
if (event != Debug.DebugEvent.Break) return;
try {
print(event_data.sourceLineText());
assertTrue(event_data.sourceLineText().indexOf(`Break ${break_count++}.`) > 0);
exec_state.prepareStep(Debug.StepAction.StepIn, 1);
} catch (e) {
exception = e;
}
};
function valueOfCallback() {
return 2; // Break 2.
} // Break 3.
var o = {};
o.valueOf = valueOfCallback;
Debug.setListener(listener);
debugger; // Break 0.
var result = 1 + o; // Break 1.
Debug.setListener(null); // Break 4.
assertEquals(3, result);
assertNull(exception);