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Diffstat (limited to 'js/src/tests/test262/built-ins/AsyncGeneratorPrototype/throw/return-rejected-promise.js')
-rw-r--r-- | js/src/tests/test262/built-ins/AsyncGeneratorPrototype/throw/return-rejected-promise.js | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/AsyncGeneratorPrototype/throw/return-rejected-promise.js b/js/src/tests/test262/built-ins/AsyncGeneratorPrototype/throw/return-rejected-promise.js new file mode 100644 index 0000000000..318cd01fad --- /dev/null +++ b/js/src/tests/test262/built-ins/AsyncGeneratorPrototype/throw/return-rejected-promise.js @@ -0,0 +1,55 @@ +// |reftest| async +// Copyright (C) 2018 Valerie Young. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-asyncgenerator-prototype-throw +description: > + "throw" returns a rejected promise +info: | + AsyncGenerator.prototype.next ( value ) + 1. Let generator be the this value. + 2. Let completion be NormalCompletion(value). + 3. Return ! AsyncGeneratorEnqueue(generator, completion). + + AsyncGeneratorEnqueue ( generator, completion ) + ... + 2. Let promiseCapability be ! NewPromiseCapability(%Promise%). + ... + 4. Let queue be generator.[[AsyncGeneratorQueue]]. + 5. Let request be AsyncGeneratorRequest{[[Completion]]: completion, + [[Capability]]: promiseCapability}. + 6. Append request to the end of queue. + ... + 9. Return promiseCapability.[[Promise]]. + + AsyncGeneratorReject ( generator, exception ) + 1. Assert: generator is an AsyncGenerator instance. + 2. Let queue be generator.[[AsyncGeneratorQueue]]. + 3. Assert: queue is not an empty List. + 4. Remove the first element from queue and let next be the value of that element. + 5. Let promiseCapability be next.[[Capability]]. + 6. Perform ! Call(promiseCapability.[[Reject]], undefined, « exception »). + ... + +flags: [async] +features: [async-iteration] +---*/ + +async function* g() {} + +var errormessage = "Promise rejected." +var result = g().throw(new Test262Error(errormessage)) + +assert(result instanceof Promise, "Expected result to be an instanceof Promise") + +result.then( + function () { + throw new Test262Error("Expected result to be rejected promise."); + }, + function (e) { + if (!(e.message = errormessage)) { + throw new Test262Error("Expected thrown custom error, got " + e); + } + } +).then($DONE, $DONE) |