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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 we only listen to uncaught exceptions and | |
8 // there is a catch handler for the to-be-rejected Promise. | |
9 // We expect an Exception debug event with a promise to be triggered. | |
10 | |
11 Debug = debug.Debug; | |
12 | |
13 var expected_events = 2; | |
14 var log = []; | |
15 | |
16 var resolve, reject; | |
17 var p0 = new Promise(function(res, rej) { resolve = res; reject = rej; }); | |
18 var p1 = p0.then(function() { | |
19 log.push("p0.then"); | |
20 return Promise.reject(new Error("123")); | |
21 }); | |
22 var p2 = p1.then(function() { | |
23 log.push("p1.then"); | |
24 }); | |
25 | |
26 var q = new Promise(function(res, rej) { | |
27 log.push("resolve q"); | |
28 res(); | |
29 }); | |
30 | |
31 q.then(function() { | |
32 log.push("resolve p"); | |
33 resolve(); | |
34 }) | |
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 assertTrue(event_data.uncaught()); | |
43 assertTrue(event_data.promise() instanceof Promise); | |
44 if (expected_events == 1) { | |
45 // p1 is rejected, uncaught except for its default reject handler. | |
46 assertEquals(0, exec_state.frameCount()); | |
47 assertSame(p1, event_data.promise()); | |
48 } else { | |
49 // p2 is rejected by p1's default reject handler. | |
50 assertEquals(0, exec_state.frameCount()); | |
51 assertSame(p2, event_data.promise()); | |
52 } | |
53 } | |
54 } catch (e) { | |
55 %AbortJS(e + "\n" + e.stack); | |
56 } | |
57 } | |
58 | |
59 Debug.setBreakOnUncaughtException(); | |
60 Debug.setListener(listener); | |
61 | |
62 log.push("end main"); | |
63 | |
64 function testDone(iteration) { | |
65 function checkResult() { | |
66 try { | |
67 assertTrue(iteration < 10); | |
68 if (expected_events === 0) { | |
69 assertEquals(["resolve q", "end main", "resolve p", "p0.then"], log); | |
70 } else { | |
71 testDone(iteration + 1); | |
72 } | |
73 } catch (e) { | |
74 %AbortJS(e + "\n" + e.stack); | |
75 } | |
76 } | |
77 | |
78 // Run testDone through the Object.observe processing loop. | |
79 var dummy = {}; | |
80 Object.observe(dummy, checkResult); | |
81 dummy.dummy = dummy; | |
82 } | |
83 | |
84 testDone(0); | |
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