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Side by Side Diff: test/mjsunit/es6/debug-promises/reject-uncaught-uncaught.js

Issue 2497973002: [debug-wrapper] Further extend the debug wrapper (Closed)
Patch Set: Address comments Created 4 years, 1 month 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 --allow-natives-syntax
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
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 var q = p.then(
22 function() {
23 log.push("reject");
24 return Promise.reject(Error("uncaught reject")); // event
25 });
26
27 function 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 // The JavaScript frame is from the Promise rejection
37 assertTrue(/Promise\.reject/.test(event_data.sourceLineText()));
38 }
39 } catch (e) {
40 %AbortJS(e + "\n" + e.stack);
41 }
42 }
43
44 Debug.setBreakOnUncaughtException();
45 Debug.setListener(listener);
46
47 log.push("end main");
48
49 function 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
66 testDone(0);
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