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Diffstat (limited to 'js/src/tests/test262/built-ins/Iterator/prototype/filter/iterator-already-exhausted.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Iterator/prototype/filter/iterator-already-exhausted.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Iterator/prototype/filter/iterator-already-exhausted.js b/js/src/tests/test262/built-ins/Iterator/prototype/filter/iterator-already-exhausted.js new file mode 100644 index 0000000000..a8682a18e7 --- /dev/null +++ b/js/src/tests/test262/built-ins/Iterator/prototype/filter/iterator-already-exhausted.js @@ -0,0 +1,28 @@ +// |reftest| shell-option(--enable-iterator-helpers) skip-if(!this.hasOwnProperty('Iterator')||!xulRuntime.shell) -- iterator-helpers is not enabled unconditionally, requires shell-options +// Copyright (C) 2023 Michael Ficarra. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-iteratorprototype.filter +description: > + Iterator.prototype.filter returns an empty iterator when the iterator has already been exhausted +info: | + %Iterator.prototype%.filter ( predicate ) + + 3.b.i. Let next be ? IteratorStep(iterated). + 3.b.ii. If next is false, return undefined. + +features: [iterator-helpers] +flags: [] +---*/ +let iterator = (function* () {})(); + +let { value, done } = iterator.next(); +assert.sameValue(value, undefined); +assert.sameValue(done, true); + +iterator = iterator.filter(() => true); +({ value, done } = iterator.next()); +assert.sameValue(value, undefined); +assert.sameValue(done, true); + +reportCompare(0, 0); |