diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for-of/iterator-close-throw-get-method-abrupt.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-of/iterator-close-throw-get-method-abrupt.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-of/iterator-close-throw-get-method-abrupt.js b/js/src/tests/test262/language/statements/for-of/iterator-close-throw-get-method-abrupt.js new file mode 100644 index 0000000000..926a58efc6 --- /dev/null +++ b/js/src/tests/test262/language/statements/for-of/iterator-close-throw-get-method-abrupt.js @@ -0,0 +1,48 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-iteratorclose +description: > + If retrieving an iterator's `return` method generates an error while + closing the iterator with throw completion, this error should be suppressed. +info: | + IteratorClose ( 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). +features: [Symbol.iterator] +---*/ + +var iterable = {}; +var iterationCount = 0; + +iterable[Symbol.iterator] = function() { + return { + next: function() { + return { done: false, value: null }; + }, + get return() { + throw { name: 'inner error' }; + }, + }; +}; + +assert.throws(Test262Error, function() { + for (var x of iterable) { + iterationCount += 1; + throw new Test262Error('should not be overriden'); + } +}); + +assert.sameValue(iterationCount, 1, 'The loop body is evaluated'); + +reportCompare(0, 0); |