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 exception thrown in a 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("throw"); 24 throw new Error("uncaught"); // event 25 }); 26 27 function listener(event, exec_state, event_data, data) { 28 if (event == Debug.DebugEvent.AsyncTaskEvent) return; 29 try { 30 if (event == Debug.DebugEvent.Exception) { 31 expected_events--; 32 assertTrue(expected_events >= 0); 33 assertEquals("uncaught", event_data.exception().message); 34 assertTrue(event_data.promise() instanceof Promise); 35 assertSame(q, event_data.promise()); 36 assertTrue(event_data.uncaught()); 37 // Assert that the debug event is triggered at the throw site. 38 assertTrue(exec_state.frame(0).sourceLineText().indexOf("// event") > 0); 39 } 40 } catch (e) { 41 %AbortJS(e + "\n" + e.stack); 42 } 43 } 44 45 Debug.setBreakOnUncaughtException(); 46 Debug.setListener(listener); 47 48 log.push("end main"); 49 50 function testDone(iteration) { 51 function checkResult() { 52 try { 53 assertTrue(iteration < 10); 54 if (expected_events === 0) { 55 assertEquals(["resolve", "end main", "throw"], log); 56 } else { 57 testDone(iteration + 1); 58 } 59 } catch (e) { 60 %AbortJS(e + "\n" + e.stack); 61 } 62 } 63 64 // Run testDone through the Object.observe processing loop. 65 var dummy = {}; 66 Object.observe(dummy, checkResult); 67 dummy.dummy = dummy; 68 } 69 70 testDone(0); 71
