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 11 Debug = debug.Debug; 12 13 var expected_events = 1; 14 var log = []; 15 16 var reject_closure; 17 18 var p = new Promise(function(resolve, reject) { 19 log.push("postpone p"); 20 reject_closure = reject; 21 }); 22 23 var q = new Promise(function(resolve, reject) { 24 log.push("resolve q"); 25 resolve(); 26 }); 27 28 q.then(function() { 29 log.push("reject p"); 30 reject_closure(new Error("uncaught reject p")); // event 31 }) 32 33 34 function 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 51 Debug.setBreakOnUncaughtException(); 52 Debug.setListener(listener); 53 54 log.push("end main"); 55 56 function 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 %EnqueueMicrotask(checkResult); 71 } 72 73 testDone(0); 74
