diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-this.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-this.js | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-this.js b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-this.js new file mode 100644 index 0000000000..58a93d864d --- /dev/null +++ b/js/src/tests/test262/built-ins/Iterator/prototype/flatMap/mapper-this.js @@ -0,0 +1,36 @@ +// |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 mapper this value is undefined +info: | + %Iterator.prototype%.flatMap ( mapper ) + + 5.b.iv. Let mapped be Completion(Call(mapper, undefined, « value, 𝔽(counter) »)). + +features: [iterator-helpers] +flags: [] +---*/ +function* g() { + yield 0; +} + +let iter = g(); + +let expectedThis = function () { + return this; +}.call(undefined); + +let assertionCount = 0; +iter = iter.flatMap(function (v, count) { + assert.sameValue(this, expectedThis); + ++assertionCount; + return [v]; +}); + +iter.next(); +assert.sameValue(assertionCount, 1); + +reportCompare(0, 0); |