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| 1 // Copyright 2016 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: --harmony-async-await | |
| 6 | |
| 7 Debug = debug.Debug | |
| 8 | |
| 9 let events = 0; | |
| 10 | |
| 11 function listener(event, exec_state, event_data, data) { | |
| 12 if (event != Debug.DebugEvent.Exception) return; | |
| 13 events++; | |
| 14 } | |
| 15 | |
| 16 async function thrower() { | |
| 17 throw "a"; // Exception a | |
| 18 } | |
| 19 | |
| 20 var reject = () => Promise.reject("b"); // Exception b | |
| 21 | |
| 22 async function awaitReturn() { await 1; return; } | |
| 23 | |
| 24 async function scalar() { return 1; } | |
| 25 | |
| 26 function nothing() { return 1; } | |
| 27 | |
| 28 function rejectConstructor() { | |
| 29 return new Promise((resolve, reject) => reject("c")); // Exception c | |
| 30 } | |
| 31 | |
| 32 async function argThrower(x = (() => { throw "d"; })()) { } // Exception d | |
| 33 | |
| 34 async function awaitThrow() { | |
| 35 await undefined; | |
| 36 throw "e"; // Exception e | |
| 37 } | |
| 38 | |
| 39 function constructorThrow() { | |
| 40 return new Promise((resolve, reject) => | |
| 41 Promise.resolve().then(() => | |
| 42 reject("f") // Exception f | |
| 43 ) | |
| 44 ); | |
| 45 } | |
| 46 | |
| 47 function suppressThrow() { | |
| 48 return thrower(); | |
| 49 } | |
| 50 | |
| 51 async function caught(producer) { | |
| 52 try { | |
| 53 await producer(); | |
| 54 } catch (e) { | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 async function uncaught(producer) { | |
| 59 await producer(); | |
| 60 } | |
| 61 | |
| 62 async function indirectUncaught(producer) { | |
| 63 await uncaught(producer); | |
| 64 } | |
| 65 | |
| 66 async function indirectCaught(producer) { | |
| 67 try { | |
| 68 await uncaught(producer); | |
| 69 } catch (e) { | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 function dotCatch(producer) { | |
| 74 Promise.resolve(producer()).catch(() => {}); | |
| 75 } | |
| 76 | |
| 77 function indirectReturnDotCatch(producer) { | |
| 78 (async() => producer())().catch(() => {}); | |
| 79 } | |
| 80 | |
| 81 function indirectAwaitDotCatch(producer) { | |
| 82 (async() => await producer())().catch(() => {}); | |
| 83 } | |
| 84 | |
| 85 function nestedDotCatch(producer) { | |
| 86 Promise.resolve(producer()).then().catch(() => {}); | |
| 87 } | |
| 88 | |
| 89 async function indirectAwaitCatch(producer) { | |
| 90 try { | |
| 91 await (() => producer())(); | |
| 92 } catch (e) { | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 function switchCatch(producer) { | |
| 97 let resolve; | |
| 98 let promise = new Promise(r => resolve = r); | |
| 99 async function localCaught() { | |
| 100 try { | |
| 101 await promise; // force switching to localUncaught and back | |
| 102 await producer(); | |
| 103 } catch (e) { } | |
| 104 } | |
| 105 async function localUncaught() { | |
| 106 await undefined; | |
| 107 resolve(); | |
| 108 } | |
| 109 localCaught(); | |
| 110 localUncaught(); | |
| 111 } | |
| 112 | |
| 113 function switchDotCatch(producer) { | |
| 114 let resolve; | |
| 115 let promise = new Promise(r => resolve = r); | |
| 116 async function localCaught() { | |
| 117 await promise; // force switching to localUncaught and back | |
| 118 await producer(); | |
| 119 } | |
| 120 async function localUncaught() { | |
| 121 await undefined; | |
| 122 resolve(); | |
| 123 } | |
| 124 localCaught().catch(() => {}); | |
| 125 localUncaught(); | |
| 126 } | |
| 127 | |
| 128 let catches = [caught, | |
| 129 indirectCaught, | |
| 130 indirectAwaitCatch, | |
| 131 switchCatch, | |
| 132 switchDotCatch]; | |
| 133 let noncatches = [uncaught, indirectUncaught]; | |
| 134 let lateCatches = [dotCatch, | |
| 135 indirectReturnDotCatch, | |
| 136 indirectAwaitDotCatch, | |
| 137 nestedDotCatch]; | |
| 138 | |
| 139 let throws = [thrower, reject, argThrower, suppressThrow]; | |
| 140 let nonthrows = [awaitReturn, scalar, nothing]; | |
| 141 let lateThrows = [awaitThrow, constructorThrow]; | |
| 142 let uncatchable = [rejectConstructor]; | |
| 143 | |
| 144 let cases = []; | |
| 145 | |
| 146 for (let producer of throws.concat(lateThrows)) { | |
| 147 for (let consumer of catches) { | |
| 148 cases.push({ producer, consumer, expectedEvents: 1, caught: true }); | |
| 149 cases.push({ producer, consumer, expectedEvents: 0, caught: false }); | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 for (let producer of throws.concat(lateThrows)) { | |
| 154 for (let consumer of noncatches) { | |
| 155 cases.push({ producer, consumer, expectedEvents: 1, caught: true }); | |
| 156 cases.push({ producer, consumer, expectedEvents: 1, caught: false }); | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 for (let producer of nonthrows) { | |
| 161 for (let consumer of catches.concat(noncatches, lateCatches)) { | |
| 162 cases.push({ producer, consumer, expectedEvents: 0, caught: true }); | |
| 163 cases.push({ producer, consumer, expectedEvents: 0, caught: false }); | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 for (let producer of uncatchable) { | |
| 168 for (let consumer of catches.concat(noncatches, lateCatches)) { | |
| 169 cases.push({ producer, consumer, expectedEvents: 1, caught: true }); | |
| 170 cases.push({ producer, consumer, expectedEvents: 1, caught: false }); | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 for (let producer of lateThrows) { | |
| 175 for (let consumer of lateCatches) { | |
| 176 cases.push({ producer, consumer, expectedEvents: 1, caught: true }); | |
| 177 cases.push({ producer, consumer, expectedEvents: 0, caught: false }); | |
| 178 } | |
| 179 } | |
| 180 | |
| 181 for (let producer of throws) { | |
| 182 for (let consumer of lateCatches) { | |
| 183 cases.push({ producer, consumer, expectedEvents: 1, caught: true }); | |
| 184 cases.push({ producer, consumer, expectedEvents: 1, caught: false }); | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 | |
| 189 function runPart(n) { | |
| 190 let subcases = cases.slice(n * cases.length / 4, | |
| 191 ((n + 1) * cases.length) / 4); | |
| 192 for (let {producer, consumer, expectedEvents, caught} of subcases) { | |
| 193 Debug.setListener(listener); | |
| 194 if (caught) { | |
| 195 Debug.setBreakOnException(); | |
| 196 } else { | |
| 197 Debug.setBreakOnUncaughtException(); | |
| 198 } | |
| 199 | |
| 200 events = 0; | |
| 201 consumer(producer); | |
| 202 %RunMicrotasks(); | |
| 203 | |
| 204 Debug.setListener(null); | |
| 205 if (caught) { | |
| 206 Debug.clearBreakOnException(); | |
| 207 } else { | |
| 208 Debug.clearBreakOnUncaughtException(); | |
| 209 } | |
| 210 if (expectedEvents != events) { | |
| 211 %AbortJS(`producer ${producer} consumer ${consumer} expectedEvents ` + | |
| 212 `${expectedEvents} caught ${caught} events ${events}`); | |
| 213 } | |
| 214 } | |
| 215 } | |
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