/* * 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); anyTypedArrayConstructors.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");