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Diffstat (limited to 'js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js')
-rw-r--r-- | js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js b/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js new file mode 100644 index 0000000000..19d2be92d8 --- /dev/null +++ b/js/src/tests/test262/built-ins/AsyncFromSyncIteratorPrototype/return/poisoned-return.js @@ -0,0 +1,66 @@ +// |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%.return +description: return() will return rejected promise if getter of `return` abrupt completes +info: | + %AsyncFromSyncIteratorPrototype%.return ( value ) + ... + 2. Let promiseCapability be ! NewPromiseCapability(%Promise%). + ... + 5. Let return be GetMethod(syncIterator, "return"). + 6. IfAbruptRejectPromise(return, promiseCapability). + ... + 8. Let returnResult be Call(return, syncIterator, « value »). + ... + 10. If Type(returnResult) is not Object, + a. Perform ! Call(promiseCapability.[[Reject]], undefined, « a TypeError exception »). + b. Return promiseCapability.[[Promise]]. + ... + 22. Return promiseCapability.[[Promise]]. + +flags: [async] +features: [async-iteration] +---*/ + +var thrownError = new Error("Catch me."); + +var obj = { + [Symbol.iterator]() { + return { + next() { + return { value: 1, done: false }; + }, + return() { + throw thrownError; + } + }; + } +}; + +async function* asyncg() { + yield* obj; +} + +var iter = asyncg(); + +iter.next().then(function(result) { + + iter.return().then( + function (result) { + throw new Test262Error("Promise should be rejected, got: " + result.value); + }, + function (err) { + assert.sameValue(err, thrownError, "Promise should be rejected with thrown error"); + + 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); + |