| // Copyright 2017 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| author: Caitlin Potter <caitp@igalia.com> |
| esid: sec-asyncgenerator-prototype-throw |
| description: > |
| Thrown generator suspended in a yield position resumes execution within |
| the associated catch-block |
| info: | |
| AsyncGenerator.prototype.throw ( exception ) |
| 1. Let generator be the this value. |
| 2. Let completion be Completion{[[Type]]: throw, [[Value]]: exception, [[Target]]: empty}. |
| 3. Return ! AsyncGeneratorEnqueue(generator, completion). |
| |
| AsyncGeneratorEnqueue ( generator, completion ) |
| ... |
| 8. If state is not "executing", then |
| a. Perform ! AsyncGeneratorResumeNext(generator). |
| ... |
| |
| AsyncGeneratorResumeNext: |
| If completion.[[Type]] is throw, and generator.[[AsyncGeneratorState]] is |
| "suspendedYield", and generator is resumed within a try-block with an |
| associated catch block, resume execution within catch-block. |
| flags: [async] |
| features: [async-iteration] |
| ---*/ |
| |
| var error = new Error('boop'); |
| var g = async function*() { |
| try { |
| yield 1; |
| throw new Test262Error('Generator must be resumed in catch block.'); |
| } catch (err) { |
| assert.sameValue(err, error); |
| return 'done'; |
| } |
| }; |
| |
| var it = g(); |
| it.next().then(function(ret) { |
| assert.sameValue(ret.value, 1, 'Initial yield'); |
| assert.sameValue(ret.done, false, 'Initial yield'); |
| |
| it.throw(error).then(function(ret) { |
| assert.sameValue(ret.value, 'done', 'AsyncGeneratorResolve(generator, resultValue, true)'); |
| assert.sameValue(ret.done, true, 'AsyncGeneratorResolve(generator, resultValue, true)'); |
| |
| it.next().then(function(ret) { |
| assert.sameValue(ret.value, undefined, 'Generator is closed'); |
| assert.sameValue(ret.done, true, 'Generator is closed'); |
| }).then($DONE, $DONE); |
| |
| }).catch($DONE); |
| |
| }).catch($DONE); |