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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/filter/target-array-with-non-writable-property.js | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/filter/target-array-with-non-writable-property.js b/js/src/tests/test262/built-ins/Array/prototype/filter/target-array-with-non-writable-property.js new file mode 100644 index 0000000000..f158da2e74 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/filter/target-array-with-non-writable-property.js @@ -0,0 +1,39 @@ +// Copyright (C) 2018 André Bargull. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-array.prototype.filter +description: > + Non-writable properties are overwritten by CreateDataPropertyOrThrow. +info: | + 22.1.3.7 Array.prototype.filter ( callbackfn [ , thisArg ] ) + + ... + 8. Repeat, while k < len + ... + c. If kPresent is true, then + ... + iii. If selected is true, then + 1. Perform ? CreateDataPropertyOrThrow(A, ! ToString(to), kValue). + ... +features: [Symbol.species] +includes: [propertyHelper.js] +---*/ + +var a = [1]; +a.constructor = {}; +a.constructor[Symbol.species] = function(len) { + var q = new Array(0); + Object.defineProperty(q, 0, { + value: 0, writable: false, configurable: true, enumerable: false, + }); + return q; +}; + +var r = a.filter(function(){ return true; }); + +verifyProperty(r, 0, { + value: 1, writable: true, configurable: true, enumerable: true, +}); + +reportCompare(0, 0); |