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| 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 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. | |
| 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 function MyPromise(resolver) { | |
| 22 var reject = undefined; | |
| 23 var resolve = function() { }; | |
| 24 log.push("construct"); | |
| 25 resolver(resolve, reject); | |
| 26 }; | |
| 27 | |
| 28 MyPromise.prototype = new Promise(function() {}); | |
| 29 p.constructor = MyPromise; | |
| 30 | |
| 31 var q = p.then( | |
| 32 function() { | |
| 33 log.push("reject caught"); | |
| 34 return Promise.reject(new Error("caught")); | |
| 35 }); | |
| 36 | |
| 37 function listener(event, exec_state, event_data, data) { | |
| 38 try { | |
| 39 if (event == Debug.DebugEvent.Exception) { | |
| 40 expected_events--; | |
| 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()); | |
| 45 } | |
| 46 } catch (e) { | |
| 47 %AbortJS(e + "\n" + e.stack); | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 Debug.setBreakOnUncaughtException(); | |
| 52 Debug.setListener(listener); | |
| 53 | |
| 54 function testDone(iteration) { | |
| 55 function checkResult() { | |
| 56 try { | |
| 57 assertTrue(iteration < 10); | |
| 58 if (expected_events === 0) { | |
| 59 assertEquals(["resolve", "construct", "end main", "reject caught"], | |
| 60 log); | |
| 61 } else { | |
| 62 testDone(iteration + 1); | |
| 63 } | |
| 64 } catch (e) { | |
| 65 %AbortJS(e + "\n" + e.stack); | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 %EnqueueMicrotask(checkResult); | |
| 70 } | |
| 71 | |
| 72 testDone(0); | |
| 73 | |
| 74 log.push("end main"); | |
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