diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-returns-closed-iterator.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-returns-closed-iterator.js | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-returns-closed-iterator.js b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-returns-closed-iterator.js new file mode 100644 index 0000000000..016bcbb3c0 --- /dev/null +++ b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-returns-closed-iterator.js @@ -0,0 +1,33 @@ +// |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.flatMap +description: > + Iterator.prototype.flatMap handles closed return values from mapper and does not try to close them again +info: | + %Iterator.prototype%.flatMap ( mapper ) + +features: [iterator-helpers] +flags: [] +---*/ + +function* g() { + yield 0; + yield 1; + yield 2; +} + +let closed = g(); +closed.return(); +closed.return = function () { + throw new Test262Error(); +}; + +let iter = g().flatMap(v => closed); +let { value, done } = iter.next(); + +assert.sameValue(value, undefined); +assert.sameValue(done, true); + +reportCompare(0, 0); |