diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Iterator/prototype/every/get-next-method-only-once.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Iterator/prototype/every/get-next-method-only-once.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Iterator/prototype/every/get-next-method-only-once.js b/js/src/tests/test262/built-ins/Iterator/prototype/every/get-next-method-only-once.js new file mode 100644 index 0000000000..e3611327a5 --- /dev/null +++ b/js/src/tests/test262/built-ins/Iterator/prototype/every/get-next-method-only-once.js @@ -0,0 +1,41 @@ +// |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.every +description: > + Gets the next method from the iterator only once +info: | + %Iterator.prototype%.every ( predicate ) + + 1. Let iterated be ? GetIteratorDirect(this value). + +features: [iterator-helpers] +flags: [] +---*/ +let nextGets = 0; + +class TestIterator extends Iterator { + get next() { + ++nextGets; + let counter = 5; + return function () { + if (counter < 0) { + return { done: true, value: undefined }; + } else { + return { done: false, value: --counter }; + } + }; + } +} + +let iterator = new TestIterator(); + +assert.sameValue(nextGets, 0); +assert.sameValue( + iterator.every(() => true), + true +); +assert.sameValue(nextGets, 1); + +reportCompare(0, 0); |