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Issue 440773004: Trigger exception debug events on Promise reject. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: comments Created 6 years, 4 months ago
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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
6
7 Debug = debug.Debug;
8
9 var base_id = -1;
10 var exception = null;
11 var expected = [
12 "enqueue #1",
13 "willHandle #1",
14 "then #1",
15 "enqueue #2",
16 "didHandle #1",
17 "willHandle #2",
18 "then #2",
19 "enqueue #3",
20 "didHandle #2",
21 "willHandle #3",
22 "didHandle #3"
23 ];
24
25 function assertLog(msg) {
26 print(msg);
27 assertTrue(expected.length > 0);
28 assertEquals(expected.shift(), msg);
29 if (!expected.length) {
30 Debug.setListener(null);
31 }
32 }
33
34 function listener(event, exec_state, event_data, data) {
35 if (event != Debug.DebugEvent.AsyncTaskEvent) return;
36 try {
37 if (base_id < 0)
38 base_id = event_data.id();
39 var id = event_data.id() - base_id + 1;
40 assertEquals("Promise.resolve", event_data.name());
41 assertLog(event_data.type() + " #" + id);
42 } catch (e) {
43 print(e + e.stack)
44 exception = e;
45 }
46 }
47
48 Debug.setListener(listener);
49
50 var resolver;
51 var p = new Promise(function(resolve, reject) {
52 resolver = resolve;
53 });
54 p.then(function() {
55 assertLog("then #1");
56 }).then(function() {
57 assertLog("then #2");
58 });
59 resolver();
60
61 assertNull(exception);
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