Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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 a |
| 8 | // Promise p3 created by Promise.all has no catch handler, and is rejected |
| 9 | // because one of the Promises p2 passed to Promise.all is rejected. We |
| 10 | // expect two Exception debug events to be triggered, for p2 and p3 each, |
| 11 | // because neither has an user-defined catch handler. |
| 12 | |
| 13 | var Debug = debug.Debug; |
| 14 | |
| 15 | var expected_events = 2; |
| 16 | var log = []; |
| 17 | |
| 18 | var p1 = Promise.resolve(); |
| 19 | p1.name = "p1"; |
| 20 | |
| 21 | var p2 = p1.then(function() { |
| 22 | log.push("throw"); |
| 23 | throw new Error("uncaught"); // event |
| 24 | }); |
| 25 | |
| 26 | p2.name = "p2"; |
| 27 | |
| 28 | var p3 = Promise.all([p2]); |
| 29 | p3.name = "p3"; |
| 30 | |
| 31 | function listener(event, exec_state, event_data, data) { |
| 32 | if (event != Debug.DebugEvent.Exception) return; |
| 33 | try { |
| 34 | expected_events--; |
| 35 | assertTrue(expected_events >= 0); |
| 36 | assertEquals("uncaught", event_data.exception().message); |
| 37 | assertTrue(event_data.promise() instanceof Promise); |
| 38 | if (expected_events === 1) { |
| 39 | // Assert that the debug event is triggered at the throw site. |
| 40 | assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0); |
| 41 | assertEquals("p2", event_data.promise().name); |
| 42 | } else { |
| 43 | assertEquals("p3", event_data.promise().name); |
| 44 | } |
| 45 | assertTrue(event_data.uncaught()); |
| 46 | } catch (e) { |
| 47 | %AbortJS(e + "\n" + e.stack); |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | Debug.setBreakOnUncaughtException(); |
| 52 | Debug.setListener(listener); |
| 53 | |
| 54 | log.push("end main"); |
| 55 | |
| 56 | function testDone(iteration) { |
| 57 | function checkResult() { |
| 58 | try { |
| 59 | assertTrue(iteration < 10); |
| 60 | if (expected_events === 0) { |
| 61 | assertEquals(["end main", "throw"], log); |
| 62 | } else { |
| 63 | testDone(iteration + 1); |
| 64 | } |
| 65 | } catch (e) { |
| 66 | %AbortJS(e + "\n" + e.stack); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | %EnqueueMicrotask(checkResult); |
| 71 | } |
| 72 | |
| 73 | testDone(0); |