From b6590765f99b1cee94ba3e9f7b14ce0b1c07056b Mon Sep 17 00:00:00 2001 From: Alexey Shvayka Date: Sun, 16 Feb 2020 20:54:33 +0200 Subject: [PATCH] Add Array#slice non-configurable property test --- ...et-array-with-non-configurable-property.js | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 test/built-ins/Array/prototype/slice/target-array-with-non-configurable-property.js diff --git a/test/built-ins/Array/prototype/slice/target-array-with-non-configurable-property.js b/test/built-ins/Array/prototype/slice/target-array-with-non-configurable-property.js new file mode 100644 index 0000000000..74804b4018 --- /dev/null +++ b/test/built-ins/Array/prototype/slice/target-array-with-non-configurable-property.js @@ -0,0 +1,41 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-array.prototype.slice +description: > + TypeError is thrown if CreateDataProperty fails. + (result object's "0" is non-configurable) +info: | + Array.prototype.slice ( start, end ) + + [...] + 10. Repeat, while k < final + [...] + c. If kPresent is true, then + [...] + ii. Perform ? CreateDataPropertyOrThrow(A, ! ToString(n), kValue). + [...] + + CreateDataPropertyOrThrow ( O, P, V ) + + [...] + 3. Let success be ? CreateDataProperty(O, P, V). + 4. If success is false, throw a TypeError exception. +features: [Symbol.species] +---*/ + +var A = function(_length) { + Object.defineProperty(this, "0", { + set: function(_value) {}, + configurable: false, + }); +}; + +var arr = [1]; +arr.constructor = {}; +arr.constructor[Symbol.species] = A; + +assert.throws(TypeError, function() { + arr.slice(0, 1); +});