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 we only listen to uncaught exceptions and 8// there is a catch handler for the to-be-rejected Promise. 9// We expect an Exception debug event with a promise to be triggered. 10 11Debug = debug.Debug; 12 13var expected_events = 1; 14var log = []; 15 16var reject_closure; 17 18var p = new Promise(function(resolve, reject) { 19 log.push("postpone p"); 20 reject_closure = reject; 21}); 22 23var q = new Promise(function(resolve, reject) { 24 log.push("resolve q"); 25 resolve(); 26}); 27 28q.then(function() { 29 log.push("reject p"); 30 reject_closure(new Error("uncaught reject p")); // event 31}) 32 33 34function listener(event, exec_state, event_data, data) { 35 try { 36 if (event == Debug.DebugEvent.Exception) { 37 expected_events--; 38 assertTrue(expected_events >= 0); 39 assertEquals("uncaught reject p", event_data.exception().message); 40 assertTrue(event_data.promise() instanceof Promise); 41 assertSame(p, event_data.promise()); 42 assertTrue(event_data.uncaught()); 43 // Assert that the debug event is triggered at the throw site. 44 assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0); 45 } 46 } catch (e) { 47 %AbortJS(e + "\n" + e.stack); 48 } 49} 50 51Debug.setBreakOnUncaughtException(); 52Debug.setListener(listener); 53 54log.push("end main"); 55 56function testDone(iteration) { 57 function checkResult() { 58 try { 59 assertTrue(iteration < 10); 60 if (expected_events === 0) { 61 assertEquals(["postpone p", "resolve q", "end main", "reject p"], log); 62 } else { 63 testDone(iteration + 1); 64 } 65 } catch (e) { 66 %AbortJS(e + "\n" + e.stack); 67 } 68 } 69 70 // Run testDone through the Object.observe processing loop. 71 var dummy = {}; 72 Object.observe(dummy, checkResult); 73 dummy.dummy = dummy; 74} 75 76testDone(0); 77