diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Iterator/prototype/flatMap/return-is-forwarded-to-mapper-result.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Iterator/prototype/flatMap/return-is-forwarded-to-mapper-result.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/return-is-forwarded-to-mapper-result.js b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/return-is-forwarded-to-mapper-result.js new file mode 100644 index 0000000000..a00b5eacca --- /dev/null +++ b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/return-is-forwarded-to-mapper-result.js @@ -0,0 +1,48 @@ +// |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: > + Mapper returned iterator return is called when result iterator is closed +info: | + %Iterator.prototype%.flatMap ( mapper ) + +features: [iterator-helpers] +flags: [] +---*/ +let returnCount = 0; + +function* g() { + yield 0; +} + +let iter = g().flatMap(v => ({ + next() { + return { + done: false, + value: 1, + }; + }, + return() { + ++returnCount; + return {}; + }, +})); + +assert.sameValue(returnCount, 0); + +let { done, value } = iter.next(); + +assert.sameValue(done, false); +assert.sameValue(value, 1); + +assert.sameValue(returnCount, 0); + +iter.return(); +assert.sameValue(returnCount, 1); + +iter.return(); +assert.sameValue(returnCount, 1); + +reportCompare(0, 0); |