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Side by Side Diff: test/mjsunit/es6/debug-promises/throw-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 a catch handler for the exception thrown in a 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("throw");
24 throw new Error("uncaught"); // event
25 });
26
27 function listener(event, exec_state, event_data, data) {
28 if (event == Debug.DebugEvent.AsyncTaskEvent) return;
29 try {
30 if (event == Debug.DebugEvent.Exception) {
31 expected_events--;
32 assertTrue(expected_events >= 0);
33 assertEquals("uncaught", event_data.exception().message);
34 assertTrue(event_data.promise() instanceof Promise);
35 assertSame(q, event_data.promise());
36 assertTrue(event_data.uncaught());
37 // Assert that the debug event is triggered at the throw site.
38 assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0);
39 }
40 } catch (e) {
41 %AbortJS(e + "\n" + e.stack);
42 }
43 }
44
45 Debug.setBreakOnUncaughtException();
46 Debug.setListener(listener);
47
48 log.push("end main");
49
50 function testDone(iteration) {
51 function checkResult() {
52 try {
53 assertTrue(iteration < 10);
54 if (expected_events === 0) {
55 assertEquals(["resolve", "end main", "throw"], log);
56 } else {
57 testDone(iteration + 1);
58 }
59 } catch (e) {
60 %AbortJS(e + "\n" + e.stack);
61 }
62 }
63
64 %EnqueueMicrotask(checkResult);
65 }
66
67 testDone(0);
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