1// Copyright 2015 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 --harmony-regexp-subclass
6
7Debug = debug.Debug
8
9var exception = null;
10var break_count = 0;
11
12function listener(event, exec_state, event_data, data) {
13  if (event != Debug.DebugEvent.Break) return;
14  try {
15    print(event_data.sourceLineText());
16    assertTrue(
17        event_data.sourceLineText().indexOf(`Break ${break_count++}.`) > 0);
18    exec_state.prepareStep(Debug.StepAction.StepIn);
19  } catch (e) {
20    exception = e;
21  }
22};
23
24function customSplit() {
25  return "x";              // Break 2.
26}                          // Break 3.
27var o = {};
28o[Symbol.split] = customSplit;
29
30Debug.setListener(listener);
31debugger;                  // Break 0.
32var result = "".split(o);  // Break 1.
33Debug.setListener(null);   // Break 4.
34
35assertEquals("x", result);
36assertNull(exception);
37