| /* |
| * Any copyright is dedicated to the Public Domain. |
| * http://creativecommons.org/publicdomain/zero/1.0/ |
| */ |
| |
| var gTestfile = 'prototype-constructor-identity.js'; |
| //----------------------------------------------------------------------------- |
| var BUGNUMBER = 896116; |
| var summary = |
| "Typed array prototypes/constructors should be largely empty, inheriting " |
| "most functionality from %TypedArray% and %TypedArray%.prototype"; |
| |
| print(BUGNUMBER + ": " + summary); |
| |
| /************** |
| * BEGIN TEST * |
| **************/ |
| |
| var TypedArray = Object.getPrototypeOf(Int8Array); |
| |
| assertEq(TypedArray !== Function.prototype, true, |
| "%TypedArray% should be in constructors' [[Prototype]] chains"); |
| assertEq(Object.getPrototypeOf(TypedArray), Function.prototype, |
| "%TypedArray%.prototype should inherit from Function.prototype"); |
| |
| assertEq(TypedArray.prototype.constructor, TypedArray, |
| "bad %TypedArray%.prototype.constructor"); |
| |
| // Check a few different functions we implement are here, as a sanity check. |
| var typedArrayProps = Object.getOwnPropertyNames(TypedArray.prototype); |
| assertEq(typedArrayProps.indexOf("copyWithin") >= 0, true); |
| assertEq(typedArrayProps.indexOf("subarray") >= 0, true); |
| assertEq(typedArrayProps.indexOf("set") >= 0, true); |
| |
| var ctors = [Int8Array, Uint8Array, Uint8ClampedArray, |
| Int16Array, Uint16Array, |
| Int32Array, Uint32Array, |
| Float32Array, Float64Array]; |
| ctors.forEach(function(ctor) { |
| assertEq(Object.getPrototypeOf(ctor), TypedArray); |
| |
| var proto = ctor.prototype; |
| |
| // Inherited functions aren't present. |
| var props = Object.getOwnPropertyNames(proto).sort(); |
| assertEq(props[0], "BYTES_PER_ELEMENT"); |
| assertEq(props[1], "constructor"); |
| assertEq(props.length, 2); |
| |
| // The inheritance chain should be set up properly. |
| assertEq(Object.getPrototypeOf(proto), TypedArray.prototype, |
| "prototype should inherit from %TypedArray%.prototype"); |
| }); |
| |
| /******************************************************************************/ |
| |
| reportCompare(true, true); |
| |
| print("Tests complete"); |