1// Copyright 2015 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 a 8// Promise p3 created by Promise.race has no catch handler, and is rejected 9// because one of the Promises p2 passed to Promise.all is rejected. We 10// expect two Exception debug events to be triggered, for p2 and p3 each, 11// because neither has an user-defined catch handler. 12 13var Debug = debug.Debug; 14 15var expected_events = 2; 16var log = []; 17 18var p1 = Promise.resolve(); 19p1.name = "p1"; 20 21var p2 = p1.then(function() { 22 log.push("throw"); 23 throw new Error("uncaught"); // event 24}); 25 26p2.name = "p2"; 27 28var p3 = Promise.race([p2]); 29p3.name = "p3"; 30 31function listener(event, exec_state, event_data, data) { 32 if (event != Debug.DebugEvent.Exception) return; 33 try { 34 expected_events--; 35 assertTrue(expected_events >= 0); 36 assertEquals("uncaught", event_data.exception().message); 37 assertTrue(event_data.promise() instanceof Promise); 38 if (expected_events === 1) { 39 // Assert that the debug event is triggered at the throw site. 40 assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0); 41 assertEquals("p2", event_data.promise().name); 42 } else { 43 assertEquals("p3", event_data.promise().name); 44 } 45 assertTrue(event_data.uncaught()); 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(["end main", "throw"], 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 73testDone(0); 74