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 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 5 | // Flags: --expose-debug-as debug --allow-natives-syntax --promise-extra |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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.chain( |
| 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 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 64 | %EnqueueMicrotask(checkResult); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 65 | } |
| 66 | |
| 67 | testDone(0); |