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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 --allow-natives-syntax --promise-extra
6
7// Test debug events when we only listen to uncaught exceptions and
8// there is no catch handler for the to-be-rejected Promise.
9// We expect an Exception debug event with a promise to be triggered.
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
21var q = p.chain(
22  function() {
23    log.push("reject");
24    return Promise.reject(Error("uncaught reject"));  // event
25  });
26
27function listener(event, exec_state, event_data, data) {
28  try {
29    if (event == Debug.DebugEvent.Exception) {
30      expected_events--;
31      assertTrue(expected_events >= 0);
32      assertEquals("uncaught reject", event_data.exception().message);
33      assertTrue(event_data.promise() instanceof Promise);
34      assertSame(q, event_data.promise());
35      assertTrue(event_data.uncaught());
36      // All of the frames on the stack are from native Javascript.
37      assertEquals(0, exec_state.frameCount());
38    }
39  } catch (e) {
40    %AbortJS(e + "\n" + e.stack);
41  }
42}
43
44Debug.setBreakOnUncaughtException();
45Debug.setListener(listener);
46
47log.push("end main");
48
49function testDone(iteration) {
50  function checkResult() {
51    try {
52      assertTrue(iteration < 10);
53      if (expected_events === 0) {
54        assertEquals(["resolve", "end main", "reject"], log);
55      } else {
56        testDone(iteration + 1);
57      }
58    } catch (e) {
59      %AbortJS(e + "\n" + e.stack);
60    }
61  }
62
63  %EnqueueMicrotask(checkResult);
64}
65
66testDone(0);
67