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Diffstat (limited to 'js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result.js')
-rw-r--r-- | js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result.js | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result.js b/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result.js new file mode 100644 index 0000000000..90b02da8c2 --- /dev/null +++ b/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result.js @@ -0,0 +1,60 @@ +// |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-%asyncfromsynciteratorprototype%.throw +description: throw() will call default sync throw +info: | + %AsyncFromSyncIteratorPrototype%.throw ( value ) + ... + 2. Let promiseCapability be ! NewPromiseCapability(%Promise%). + ... + 5. Let throw be GetMethod(syncIterator, "throw"). + ... + 8. Let throwResult be Call(throw, syncIterator, « value ») + 9. IfAbruptRejectPromise(throwResult, promiseCapability). + ... + 22. Return promiseCapability.[[Promise]]. + + Generator.prototype.throw ( exception ) + 1. Let g be the this value. + 2. Let C be Completion{[[Type]]: throw, [[Value]]: exception, [[Target]]: empty}. + 3. Return ? GeneratorResumeAbrupt(g, C). + +flags: [async] +features: [async-iteration] +---*/ + +var thrownError = new Error("Catch me.") + +function* g() { + yield 42; + throw new Test262Error('throw closes iter'); + yield 43; +} + +async function* asyncg() { + yield* g(); +} + +var iter = asyncg(); + +iter.next().then(function(result) { + + // throw will call sync generator prototype built-in function throw + iter.throw(thrownError).then( + function(result) { + throw new Test262Error('throw should cause rejection of promise'); + }, + function(err) { + assert.sameValue(err, thrownError, "promise should be reject with custom error, got: " + err) + + iter.next().then(({ done, value }) => { + assert.sameValue(done, true, 'the iterator is completed'); + assert.sameValue(value, undefined, 'value is undefined'); + }).then($DONE, $DONE); + } + ).catch($DONE); + +}).catch($DONE); |