OLD | NEW |
(Empty) | |
| 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.race 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.race([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); |
OLD | NEW |