diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Iterator/prototype/drop/underlying-iterator-advanced-in-parallel.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Iterator/prototype/drop/underlying-iterator-advanced-in-parallel.js | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Iterator/prototype/drop/underlying-iterator-advanced-in-parallel.js b/js/src/tests/test262/built-ins/Iterator/prototype/drop/underlying-iterator-advanced-in-parallel.js new file mode 100644 index 0000000000..635182e2cc --- /dev/null +++ b/js/src/tests/test262/built-ins/Iterator/prototype/drop/underlying-iterator-advanced-in-parallel.js @@ -0,0 +1,42 @@ +// |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.drop +description: > + Underlying iterator is advanced after calling drop +info: | + %Iterator.prototype%.drop ( limit ) + +features: [iterator-helpers] +flags: [] +---*/ +let iterator = (function* () { + for (let i = 0; i < 5; ++i) { + yield i; + } +})(); + +let dropped = iterator.drop(2); + +let { value, done } = iterator.next(); + +assert.sameValue(value, 0); +assert.sameValue(done, false); + +({ value, done } = dropped.next()); + +assert.sameValue(value, 3); +assert.sameValue(done, false); + +({ value, done } = dropped.next()); + +assert.sameValue(value, 4); +assert.sameValue(done, false); + +({ value, done } = dropped.next()); + +assert.sameValue(value, undefined); +assert.sameValue(done, true); + +reportCompare(0, 0); |