diff options
Diffstat (limited to 'deps/v8/test/mjsunit/es6/array-species-constructor.js')
-rw-r--r-- | deps/v8/test/mjsunit/es6/array-species-constructor.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/es6/array-species-constructor.js b/deps/v8/test/mjsunit/es6/array-species-constructor.js new file mode 100644 index 0000000000..0d888f46ee --- /dev/null +++ b/deps/v8/test/mjsunit/es6/array-species-constructor.js @@ -0,0 +1,28 @@ +// Copyright 2016 the V8 project authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Flags: --allow-natives-syntax + +// Overwriting the constructor of an instance updates the protector + +let x = []; + +assertEquals(Array, x.map(()=>{}).constructor); +assertEquals(Array, x.filter(()=>{}).constructor); +assertEquals(Array, x.slice().constructor); +assertEquals(Array, x.splice().constructor); +assertEquals(Array, x.concat([1]).constructor); +assertEquals(1, x.concat([1])[0]); + +class MyArray extends Array { } + +x.constructor = MyArray; +assertFalse(%SpeciesProtector()); + +assertEquals(MyArray, x.map(()=>{}).constructor); +assertEquals(MyArray, x.filter(()=>{}).constructor); +assertEquals(MyArray, x.slice().constructor); +assertEquals(MyArray, x.splice().constructor); +assertEquals(MyArray, x.concat([1]).constructor); +assertEquals(1, x.concat([1])[0]); |