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 6 7// Test debug events when we only listen to uncaught exceptions and 8// an exception is thrown in the Promise constructor, but caught in an 9// inner try-catch. The Promise is rejected afterwards. 10// We expect an Exception debug event with a promise to be triggered. 11 12Debug = debug.Debug; 13 14var step = 0; 15var exception = null; 16 17function listener(event, exec_state, event_data, data) { 18 try { 19 if (event == Debug.DebugEvent.Exception) { 20 assertEquals(0, step); 21 assertEquals("uncaught", event_data.exception().message); 22 assertTrue(event_data.promise() instanceof Promise); 23 assertTrue(event_data.uncaught()); 24 // Assert that the debug event is triggered at the throw site. 25 assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0); 26 step++; 27 } 28 } catch (e) { 29 exception = e; 30 } 31} 32 33Debug.setBreakOnUncaughtException(); 34Debug.setListener(listener); 35 36var p = new Promise(function(resolve, reject) { 37 try { // This try-catch must not prevent this uncaught reject event. 38 throw new Error("caught"); 39 } catch (e) { } 40 reject(new Error("uncaught")); // event 41}); 42 43assertEquals(1, step); 44assertNull(exception); 45