| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Flags: --harmony-promises --expose-debug-as debug |
| |
| // Test debug events when an exception is thrown inside a Promise, which is |
| // caught by a custom promise, which has no reject handler. |
| // We expect an Exception event with a promise to be triggered. |
| |
| Debug = debug.Debug; |
| |
| var log = []; |
| var step = 0; |
| |
| var p = new Promise(function(resolve, reject) { |
| log.push("resolve"); |
| resolve(); |
| }); |
| |
| function MyPromise(resolver) { |
| var reject = undefined; |
| var resolve = function() { }; |
| log.push("construct"); |
| resolver(resolve, reject); |
| }; |
| |
| MyPromise.prototype = p; |
| p.constructor = MyPromise; |
| |
| var q = p.chain( |
| function() { |
| log.push("throw caught"); |
| throw new Error("caught"); // event |
| }); |
| |
| function listener(event, exec_state, event_data, data) { |
| try { |
| if (event == Debug.DebugEvent.Exception) { |
| assertEquals(["resolve", "construct", "end main", "throw caught"], log); |
| assertEquals("undefined is not a function", |
| event_data.exception().message); |
| assertEquals(q, event_data.promise()); |
| } |
| } catch (e) { |
| // Signal a failure with exit code 1. This is necessary since the |
| // debugger swallows exceptions and we expect the chained function |
| // and this listener to be executed after the main script is finished. |
| print("Unexpected exception: " + e + "\n" + e.stack); |
| quit(1); |
| } |
| } |
| |
| Debug.setBreakOnUncaughtException(); |
| Debug.setListener(listener); |
| |
| log.push("end main"); |