diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/sort/precise-comparefn-throws.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/sort/precise-comparefn-throws.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/sort/precise-comparefn-throws.js b/js/src/tests/test262/built-ins/Array/prototype/sort/precise-comparefn-throws.js new file mode 100644 index 0000000000..3c5950982e --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/sort/precise-comparefn-throws.js @@ -0,0 +1,54 @@ +// 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 logs = []; + +Object.defineProperty(Object.prototype, '2', { + get() { + logs.push('get'); + return 4; + }, + set(v) { + logs.push(`set with ${v}`); + } +}); +const array = [undefined, 3, /*hole*/, 2, undefined, /*hole*/, 1]; +let count = 0; +try { + array.sort((a, b) => { + if (++count === 3) { + throw new Error('lolwat'); + } + return b - a; + }); +} catch (exception) { + logs.push(exception.message); +} + +assert.sameValue(logs[0], 'get'); +assert.sameValue(logs[1], 'lolwat'); +assert.sameValue(logs.length, 2); + +assert.sameValue(array[0], undefined); +assert.sameValue(array[1], 3); +assert.sameValue('2' in array, true); +assert.sameValue(array.hasOwnProperty('2'), false); +assert.sameValue(array[3], 2); +assert.sameValue(array[4], undefined); +assert.sameValue('5' in array, false); +assert.sameValue(array.hasOwnProperty('5'), false); +assert.sameValue(array[6], 1); +assert.sameValue(array.length, 7); + +reportCompare(0, 0); |