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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 // Test debug events when an exception is thrown inside a Promise, which is | |
8 // caught by a custom promise, which has no reject handler. | |
9 // We expect an Exception event with a promise to be triggered. | |
10 | |
11 Debug = debug.Debug; | |
12 | |
13 var log = []; | |
14 var step = 0; | |
15 | |
16 var p = new Promise(function(resolve, reject) { | |
17 log.push("resolve"); | |
18 resolve(); | |
19 }); | |
20 | |
21 function MyPromise(resolver) { | |
22 var reject = undefined; | |
23 var resolve = function() { }; | |
24 log.push("construct"); | |
25 resolver(resolve, reject); | |
26 }; | |
27 | |
28 MyPromise.prototype = p; | |
29 p.constructor = MyPromise; | |
30 | |
31 var q = p.chain( | |
32 function() { | |
33 log.push("throw caught"); | |
34 throw new Error("caught"); // event | |
35 }); | |
36 | |
37 function listener(event, exec_state, event_data, data) { | |
38 try { | |
39 if (event == Debug.DebugEvent.Exception) { | |
40 assertEquals(["resolve", "construct", "end main", "throw caught"], log); | |
41 assertEquals("undefined is not a function", | |
42 event_data.exception().message); | |
43 assertEquals(q, event_data.promise()); | |
44 } | |
45 } catch (e) { | |
46 // Signal a failure with exit code 1. This is necessary since the | |
47 // debugger swallows exceptions and we expect the chained function | |
48 // and this listener to be executed after the main script is finished. | |
49 print("Unexpected exception: " + e + "\n" + e.stack); | |
50 quit(1); | |
51 } | |
52 } | |
53 | |
54 Debug.setBreakOnUncaughtException(); | |
55 Debug.setListener(listener); | |
56 | |
57 log.push("end main"); | |
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