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 --promise-extra 6 7 // Test debug events when we listen to all 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 p = new Promise(function(resolve, reject) { 17 log.push("resolve"); 18 resolve(); 19 }); 20 21 var q = p.chain( 22 function() { 23 log.push("reject"); 24 return Promise.reject(new Error("uncaught reject")); 25 }); 26 27 function listener(event, exec_state, event_data, data) { 28 try { 29 if (event == Debug.DebugEvent.Exception) { 30 expected_events--; 31 assertTrue(expected_events >= 0); 32 assertEquals("uncaught reject", event_data.exception().message); 33 assertTrue(event_data.promise() instanceof Promise); 34 assertSame(q, event_data.promise()); 35 assertTrue(event_data.uncaught()); 36 // All of the frames on the stack are from native Javascript. 37 assertEquals(0, exec_state.frameCount()); 38 } 39 } catch (e) { 40 %AbortJS(e + "\n" + e.stack); 41 } 42 } 43 44 Debug.setBreakOnException(); 45 Debug.setListener(listener); 46 47 log.push("end main"); 48 49 function testDone(iteration) { 50 function checkResult() { 51 try { 52 assertTrue(iteration < 10); 53 if (expected_events === 0) { 54 assertEquals(["resolve", "end main", "reject"], log); 55 } else { 56 testDone(iteration + 1); 57 } 58 } catch (e) { 59 %AbortJS(e + "\n" + e.stack); 60 } 61 } 62 63 %EnqueueMicrotask(checkResult); 64 } 65 66 testDone(0); 67
