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// 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]\"`"
);
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