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: --harmony-promises --expose-debug-as debug 6 7// Test debug events when we listen to all exceptions and 8// there is a catch handler for the exception thrown in a Promise. 9// We expect an Exception debug event with a promise to be triggered. 10 11Debug = debug.Debug; 12 13var log = []; 14var step = 0; 15var exception = undefined; 16 17var p = new Promise(function(resolve, reject) { 18 log.push("resolve"); 19 resolve(); 20}); 21 22var q = p.chain( 23 function() { 24 log.push("throw"); 25 throw new Error("uncaught"); // event 26 }); 27 28function listener(event, exec_state, event_data, data) { 29 try { 30 // Ignore exceptions during startup in stress runs. 31 if (step >= 1) return; 32 assertEquals(["resolve", "end main", "throw"], log); 33 if (event == Debug.DebugEvent.Exception) { 34 assertEquals(0, step); 35 assertEquals("uncaught", event_data.exception().message); 36 assertTrue(event_data.promise() instanceof Promise); 37 assertEquals(q, event_data.promise()); 38 assertTrue(event_data.uncaught()); 39 // Assert that the debug event is triggered at the throw site. 40 assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0); 41 step++; 42 } 43 } catch (e) { 44 // Signal a failure with exit code 1. This is necessary since the 45 // debugger swallows exceptions and we expect the chained function 46 // and this listener to be executed after the main script is finished. 47 print("Unexpected exception: " + e + "\n" + e.stack); 48 quit(1); 49 } 50} 51 52Debug.setBreakOnException(); 53Debug.setListener(listener); 54 55log.push("end main"); 56