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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/language/statements/class/subclass/builtins.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/subclass/builtins.js b/js/src/tests/test262/language/statements/class/subclass/builtins.js new file mode 100644 index 0000000000..dc95f7827a --- /dev/null +++ b/js/src/tests/test262/language/statements/class/subclass/builtins.js @@ -0,0 +1,32 @@ +// Copyright (C) 2014 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 14.5 +description: > + class sublclassing builtins +---*/ +class ExtendedUint8Array extends Uint8Array { + constructor() { + super(10); + this[0] = 255; + this[1] = 0xFFA; + } +} + +var eua = new ExtendedUint8Array(); +assert.sameValue(eua.length, 10, "The value of `eua.length` is `10`"); +assert.sameValue(eua.byteLength, 10, "The value of `eua.byteLength` is `10`"); +assert.sameValue(eua[0], 0xFF, "The value of `eua[0]` is `0xFF`"); +assert.sameValue(eua[1], 0xFA, "The value of `eua[1]` is `0xFA`"); +assert.sameValue( + Object.getPrototypeOf(eua), + ExtendedUint8Array.prototype, + "`Object.getPrototypeOf(eua)` returns `ExtendedUint8Array.prototype`" +); +assert.sameValue( + Object.prototype.toString.call(eua), + "[object Uint8Array]", + "`Object.prototype.toString.call(eua)` returns `\"[object Uint8Array]\"`" +); + +reportCompare(0, 0); |