diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-extensible-spreadable.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-extensible-spreadable.js | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-extensible-spreadable.js b/js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-extensible-spreadable.js new file mode 100644 index 0000000000..f2d43b7293 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-extensible-spreadable.js @@ -0,0 +1,45 @@ +// 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.concat +description: > + TypeError is thrown if CreateDataProperty fails. + (result object is non-extensible, argument is spreadable) +info: | + Array.prototype.concat ( ...arguments ) + + [...] + 5. Repeat, while items is not empty + [...] + c. If spreadable is true, then + [...] + iv. Repeat, while k < len + [...] + 3. If exists is true, then + [...] + b. Perform ? CreateDataPropertyOrThrow(A, ! ToString(n), subElement). + [...] + + 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) { + this.length = 0; + Object.preventExtensions(this); +}; + +var arr = []; +arr.constructor = {}; +arr.constructor[Symbol.species] = A; + +assert.throws(TypeError, function() { + arr.concat([1]); +}, 'arr.concat([1]) throws a TypeError exception'); + +reportCompare(0, 0); |