Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 only a default reject handler for the to-be-rejected Promise. |
| 9 | // We expect two Exception debug events: |
| 10 | // - when the first Promise is rejected and only has default reject handlers. |
| 11 | // - when the default reject handler passes the rejection on. |
| 12 | |
| 13 | Debug = debug.Debug; |
| 14 | |
| 15 | var expected_events = 2; |
| 16 | var log = []; |
| 17 | |
| 18 | var resolve, reject; |
| 19 | var p0 = new Promise(function(res, rej) { resolve = res; reject = rej; }); |
| 20 | var p1 = p0.then(function() { |
| 21 | log.push("p0.then"); |
| 22 | return Promise.reject(new Error("123")); |
| 23 | }); |
| 24 | var p2 = p1.then(function() { |
| 25 | log.push("p1.then"); |
| 26 | }); |
| 27 | |
| 28 | var q = new Promise(function(res, rej) { |
| 29 | log.push("resolve q"); |
| 30 | res(); |
| 31 | }); |
| 32 | |
| 33 | q.then(function() { |
| 34 | log.push("resolve p"); |
| 35 | resolve(); |
| 36 | }) |
| 37 | |
| 38 | |
| 39 | function listener(event, exec_state, event_data, data) { |
| 40 | try { |
| 41 | if (event == Debug.DebugEvent.Exception) { |
| 42 | expected_events--; |
| 43 | assertTrue(expected_events >= 0); |
| 44 | assertTrue(event_data.uncaught()); |
| 45 | assertTrue(event_data.promise() instanceof Promise); |
| 46 | if (expected_events == 1) { |
| 47 | // p1 is rejected, uncaught except for its default reject handler. |
| 48 | assertEquals(0, exec_state.frameCount()); |
| 49 | assertSame(p1, event_data.promise()); |
| 50 | } else { |
| 51 | // p2 is rejected by p1's default reject handler. |
| 52 | assertEquals(0, exec_state.frameCount()); |
| 53 | assertSame(p2, event_data.promise()); |
| 54 | } |
| 55 | } |
| 56 | } catch (e) { |
| 57 | %AbortJS(e + "\n" + e.stack); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | Debug.setBreakOnUncaughtException(); |
| 62 | Debug.setListener(listener); |
| 63 | |
| 64 | log.push("end main"); |
| 65 | |
| 66 | function testDone(iteration) { |
| 67 | function checkResult() { |
| 68 | try { |
| 69 | assertTrue(iteration < 10); |
| 70 | if (expected_events === 0) { |
| 71 | assertEquals(["resolve q", "end main", "resolve p", "p0.then"], log); |
| 72 | } else { |
| 73 | testDone(iteration + 1); |
| 74 | } |
| 75 | } catch (e) { |
| 76 | %AbortJS(e + "\n" + e.stack); |
| 77 | } |
| 78 | } |
| 79 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 80 | %EnqueueMicrotask(checkResult); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | testDone(0); |