diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/sort/precise-getter-decreases-length.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/sort/precise-getter-decreases-length.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/sort/precise-getter-decreases-length.js b/js/src/tests/test262/built-ins/Array/prototype/sort/precise-getter-decreases-length.js new file mode 100644 index 0000000000..c184ad10bf --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/sort/precise-getter-decreases-length.js @@ -0,0 +1,41 @@ +// Copyright (C) 2021 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-array.prototype.sort +description: > + Previously implementation-defined aspects of Array.prototype.sort. +info: | + Historically, many aspects of Array.prototype.sort remained + implementation-defined. https://github.com/tc39/ecma262/pull/1585 + described some behaviors more precisely, reducing the amount of cases + that result in an implementation-defined sort order. +---*/ + +const array = [undefined, 'c', /*hole*/, 'b', undefined, /*hole*/, 'a', 'd']; + +Object.defineProperty(array, '2', { + get() { + array.length = array.length - 2; + return this.foo; + }, + set(v) { + this.foo = v; + } +}); + +array.sort(); + +assert.sameValue(array[0], 'b'); +assert.sameValue(array[1], 'c'); +assert.sameValue(array[3], undefined); +assert.sameValue(array[4], undefined); +assert.sameValue('5' in array, false); +assert.sameValue(array.hasOwnProperty('5'), false); +assert.sameValue(array.length, 6); +assert.sameValue(array.foo, undefined); + +assert.sameValue(array[2], undefined); +assert.sameValue(array.length, 4); + +reportCompare(0, 0); |