JSTests/ChakraCore/test/TTBasic/object.js

//-------------------------------------------------------------------------------------------------------
// 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 = { foo: 3, bar: null };
var y = x;

y.baz = "new prop";

var z = new Object();
z['foo'] = 3;
z[1] = "bob";
z['2'] = "bob2";

WScript.SetTimeout(testFunction, 50);

/////////////////

function testFunction()
{
    telemetryLog(`typeof (x): ${typeof (x)}`, true); //object
    telemetryLog(`typeof (z): ${typeof (z)}`, true); //object;

    telemetryLog(`x === y: ${x === y}`, true); //true
    telemetryLog(`x !== z: ${x !== z}`, true); //true

    telemetryLog(`y.foo: ${y.foo}`, true); //3
    telemetryLog(`z.foo: ${z.foo}`, true); //3
    telemetryLog(`z[1]: ${z[1]}`, true); //bob
    telemetryLog(`z[2]: ${z[2]}`, true); //bob2

    telemetryLog(`x.foo: ${x.foo}`, true); //3
    telemetryLog(`x.bar: ${x.bar}`, true); //null
    telemetryLog(`x.baz: ${x.baz}`, true); //new prop"

    telemetryLog(`x.notPresent: ${x.notPresent}`, true); //undefined
    telemetryLog(`z[0]: ${z[0]}`, true); //undefined
    telemetryLog(`z[5]: ${z[5]}`, true); //undefined

    ////
    z.foo = 0;
    y.foo = 10;
    y.foo2 = "ten";
    y[10] = "foo";
    y.bar = 3;
    ////

    telemetryLog(`post update -- z[0]: ${z[0]}`, true); //undefined
    telemetryLog(`post update -- z.foo: ${z.foo}`, true); //0
    telemetryLog(`post update -- x.foo: ${x.foo}`, true); //10
    telemetryLog(`post update -- x.foo2: ${x.foo2}`, true); //ten
    telemetryLog(`post update -- x[0]: ${x[0]}`, true); //undefined
    telemetryLog(`post update -- x[10]: ${x[10]}`, true); //foo

    telemetryLog(`post update -- y.bar: ${y.bar}`, true); //3
    telemetryLog(`post update -- x.bar: ${x.bar}`, true); //3
}