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Diffstat (limited to 'js/src/tests/test262/language/statements/for-await-of/iterator-close-throw-get-method-non-callable.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-await-of/iterator-close-throw-get-method-non-callable.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-await-of/iterator-close-throw-get-method-non-callable.js b/js/src/tests/test262/language/statements/for-await-of/iterator-close-throw-get-method-non-callable.js new file mode 100644 index 0000000000..17cef4c6a7 --- /dev/null +++ b/js/src/tests/test262/language/statements/for-await-of/iterator-close-throw-get-method-non-callable.js @@ -0,0 +1,52 @@ +// |reftest| async +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-asynciteratorclose +description: > + If retrieving an iterator's `return` method generates an error while + closing the iterator with throw completion, this error should be suppressed. +info: | + AsyncIteratorClose ( iteratorRecord, completion ) + + [...] + 4. Let innerResult be GetMethod(iterator, "return"). + 5. If innerResult.[[Type]] is normal, + [...] + 6. If completion.[[Type]] is throw, return Completion(completion). + 7. If innerResult.[[Type]] is throw, return Completion(innerResult). + + GetMethod ( V, P ) + + [...] + 2. Let func be ? GetV(V, P). + 3. If func is either undefined or null, return undefined. + 4. If IsCallable(func) is false, throw a TypeError exception. +features: [async-iteration] +flags: [async] +---*/ + +const asyncIterable = {}; +asyncIterable[Symbol.asyncIterator] = function() { + return { + next: function() { + return { done: false, value: null }; + }, + return: true, + }; +}; + +let iterationCount = 0; +const promise = (async function() { + for await (const x of asyncIterable) { + iterationCount += 1; + throw new Test262Error("should not be overriden"); + } +})(); + +promise.then(function(value) { + throw new Test262Error("Promise should be rejected, got: " + value); +}, function(error) { + assert.sameValue(error.constructor, Test262Error); + assert.sameValue(iterationCount, 1, "The loop body is evaluated"); +}).then($DONE, $DONE); |