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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 | |
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 | |
11 Debug = debug.Debug; | |
12 | |
13 var expected_events = 1; | |
14 var log = []; | |
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 = new Promise(function() {}); | |
29 p.constructor = MyPromise; | |
30 | |
31 var q = p.then( | |
32 function() { | |
33 log.push("reject caught"); | |
34 return Promise.reject(new Error("caught")); | |
35 }); | |
36 | |
37 function 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 | |
51 Debug.setBreakOnUncaughtException(); | |
52 Debug.setListener(listener); | |
53 | |
54 function 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 | |
72 testDone(0); | |
73 | |
74 log.push("end main"); | |
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