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.
5 // Flags: --expose-debug-as debug --allow-natives-syntax
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.
13 var expected_events = 1;
16 var p = new Promise(function(resolve, reject) {
21 function MyPromise(resolver) {
22 var reject = undefined;
23 var resolve = function() { };
24 log.push("construct");
25 resolver(resolve, reject);
28 MyPromise.prototype = new Promise(function() {});
29 p.constructor = MyPromise;
33 log.push("reject caught");
34 return Promise.reject(new Error("caught"));
37 function listener(event, exec_state, event_data, data) {
39 if (event == Debug.DebugEvent.Exception) {
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());
47 %AbortJS(e + "\n" + e.stack);
51 Debug.setBreakOnUncaughtException();
52 Debug.setListener(listener);
54 function testDone(iteration) {
55 function checkResult() {
57 assertTrue(iteration < 10);
58 if (expected_events === 0) {
59 assertEquals(["resolve", "construct", "end main", "reject caught"],
62 testDone(iteration + 1);
65 %AbortJS(e + "\n" + e.stack);
69 // Run testDone through the Object.observe processing loop.
71 Object.observe(dummy, checkResult);