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 --allow-natives-syntax --promise-extra
6
7// Test debug events when a Promise is rejected, which is caught by a custom
8// promise, which has undefined for reject closure.  We expect an Exception
9// debug even calling the (undefined) custom rejected closure.
10
11Debug = debug.Debug;
12
13var expected_events = 1;
14var log = [];
15
16var p = new Promise(function(resolve, reject) {
17  log.push("resolve");
18  resolve();
19});
20
21function MyPromise(resolver) {
22  var reject = undefined;
23  var resolve = function() { };
24  log.push("construct");
25  resolver(resolve, reject);
26};
27
28MyPromise.prototype = new Promise(function() {});
29p.constructor = MyPromise;
30
31var q = p.chain(
32  function() {
33    log.push("reject caught");
34    return Promise.reject(new Error("caught"));
35  });
36
37function listener(event, exec_state, event_data, data) {
38  try {
39    if (event == Debug.DebugEvent.Exception) {
40      expected_events--;
41      assertTrue(expected_events >= 0);
42      assertEquals("caught", event_data.exception().message);
43      // All of the frames on the stack are from native Javascript.
44      assertEquals(0, exec_state.frameCount());
45    }
46  } catch (e) {
47    %AbortJS(e + "\n" + e.stack);
48  }
49}
50
51Debug.setBreakOnUncaughtException();
52Debug.setListener(listener);
53
54function testDone(iteration) {
55  function checkResult() {
56    try {
57      assertTrue(iteration < 10);
58      if (expected_events === 0) {
59        assertEquals(["resolve", "construct", "end main", "reject caught"],
60                     log);
61      } else {
62        testDone(iteration + 1);
63      }
64    } catch (e) {
65      %AbortJS(e + "\n" + e.stack);
66    }
67  }
68
69  %EnqueueMicrotask(checkResult);
70}
71
72testDone(0);
73
74log.push("end main");
75