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Diffstat (limited to 'js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-ctor.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-ctor.js | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-ctor.js b/js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-ctor.js new file mode 100644 index 0000000000..fb102a6052 --- /dev/null +++ b/js/src/tests/test262/built-ins/Array/prototype/concat/create-species-non-ctor.js @@ -0,0 +1,40 @@ +// Copyright (C) 2016 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-array.prototype.concat +description: > + Behavior when the @@species attribute is a non-constructor object +info: | + 1. Let O be ? ToObject(this value). + 2. Let A be ? ArraySpeciesCreate(O, 0). + + 9.4.2.3 ArraySpeciesCreate + + [...] + 5. Let C be ? Get(originalArray, "constructor"). + [...] + 7. If Type(C) is Object, then + a. Let C be ? Get(C, @@species). + b. If C is null, let C be undefined. + [...] + 9. If IsConstructor(C) is false, throw a TypeError exception. +includes: [isConstructor.js] +features: [Symbol.species, Reflect.construct] +---*/ + +assert.sameValue( + isConstructor(parseInt), + false, + 'precondition: isConstructor(parseInt) must return false' +); + +var a = []; + +a.constructor = {}; +a.constructor[Symbol.species] = parseInt; + +assert.throws(TypeError, function() { + a.concat(); +}, 'a.concat() throws a TypeError exception'); + +reportCompare(0, 0); |