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es5Array.js
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72 lines (53 loc) · 2.47 KB
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//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------
var x = [];
x[2] = 5;
x.foo = 3;
Object.defineProperty(x, '1', {
get: function () { return this.foo + 1; },
set: function (x) { this.foo = x / 2; }
});
Object.defineProperty(x, 11, {
get: function () { return this.foo; }
});
var simpleArrayEmptyLength = [];
Object.defineProperty(simpleArrayEmptyLength, "length", {});
var aFixedInfo = [0, 1, 2, 3, 4, 5];
Object.defineProperty(aFixedInfo, "length", { writable: false });
Object.defineProperty(aFixedInfo, "2", { writable: false });
var aFrozen = [0, 1, 2, 3, 4, 5];
Object.freeze(aFrozen);
var oIncFreeze = [0, 1, 2, 3, 4, 5];
for (var i = 0; i < oIncFreeze.length; i++)
{
Object.defineProperty(oIncFreeze, i, { writable: false, configurable: false });
}
Object.preventExtensions(oIncFreeze);
WScript.SetTimeout(testFunction, 50);
/////////////////
function testFunction()
{
telemetryLog(`Array.isArray(x): ${Array.isArray(x)}`, true); //true
telemetryLog(`x.foo: ${x.foo}`, true); //3
telemetryLog(`x[1]: ${x[1]}`, true); //4
telemetryLog(`x[11]: ${x[11]}`, true); //3
////
x[1] = 12;
////
telemetryLog(`x[1]: ${x[1]}`, true); //7
telemetryLog(`x[11]: ${x[11]}`, true); //6
////
telemetryLog(`Object.getOwnPropertyDescriptor(simpleArrayEmptyLength.length): ${JSON.stringify(Object.getOwnPropertyDescriptor(simpleArrayEmptyLength, "length"))}`, true); //asdf
aFixedInfo[9] = 9; // This would throw in strict mode
telemetryLog(`aFixedInfo: ${JSON.stringify(aFixedInfo)}`, true); //0, 1, 2, 3, 4, 5
aFixedInfo[1] = -1;
aFixedInfo[2] = -2;
telemetryLog(`aFixedInfo: ${JSON.stringify(aFixedInfo)}`, true); //0, 1, 2, 3, 4, 5
telemetryLog(`Object.getOwnPropertyDescriptor(aFrozen.length): ${JSON.stringify(Object.getOwnPropertyDescriptor(aFrozen, "length"))}`, true); //asdf
telemetryLog(`isFrozen: ${Object.isFrozen(oIncFreeze)}`, true); // false, because length writable
Object.defineProperty(oIncFreeze, "length", { writable: false });
telemetryLog(`isFrozen: ${Object.isFrozen(oIncFreeze)}`, true);
emitTTDLog(ttdLogURI);
}