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Object.js
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94 lines (78 loc) · 3.1 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.
//-------------------------------------------------------------------------------------------------------
function write(value) {
WScript.Echo(value);
}
function RunTest(testCase, testCount) {
var testFunction = testCase[0];
var testScenario = testCase[1];
testScenario = " (test " + testCount + "): " + testScenario;
write(testScenario);
try {
var result = testFunction();
if (result == true) {
write("PASS");
}
} catch (e) {
var resultString = "FAILED" + testScenario;
write(resultString + " :: " + e.message);
}
}
function RunAllTests(){
for(var i = 0; i < testList.length; ++i){
RunTest(testList[i], i + 1);
}
}
var testList = [
[Test1, "Object getOwnPropertyDescriptor throws TypeError when the first parameter is either null or undefined"],
[Test2, "Freezing an object with deleted properties"],
[Test3, "Object getOwnPropertyDescriptor works fine when the first parameter is a built-in type except null or undefined"],
];
// Utility functions
function Verify(expression, expectedValue, actualValue) {
if (expectedValue != actualValue) {
write("Failed: Expected " + expression + " = " + expectedValue + ", got " + actualValue);
return false;
}
write("Success: Expected " + expression + " = " + expectedValue + ", got " + actualValue);
return true;
}
//Tests
// Object getOwnPropertyDescriptor throws TypeError when parameter is not Object. ES5 spec 15.2.3.3.
function Test1() {
var exception;
exception = null;
try {
eval("Object.getOwnPropertyDescriptor(null, 'foo', {})");
} catch (ex) {
exception = ex;
}
if(!Verify("Object getOwnPropertyDescriptor throws TypeError when 1st parameter is null", true, exception instanceof TypeError)) return false;
exception = null;
try {
eval("Object.getOwnPropertyDescriptor(undefined, 'foo', {})");
} catch (ex) {
exception = ex;
}
if(!Verify("Object getOwnPropertyDescriptor throws TypeError when 1st parameter is undefined", true, exception instanceof TypeError)) return false;
return true;
}
// BLUE:227417: Freezing an object with deleted properties
function Test2()
{
var x = {};
x.c = 1;
delete x.c;
Object.freeze(x);
return true;
}
function Test3()
{
if (!Verify("Object getOwnPropertyDescriptor does not throw when 1st parameter is boolean", undefined, Object.getOwnPropertyDescriptor(true, 'foo'))) return false;
if (!Verify("Object getOwnPropertyDescriptor does not throw when 1st parameter is number", undefined, Object.getOwnPropertyDescriptor(123, 'foo'))) return false;
if (!Verify("Object getOwnPropertyDescriptor works fine when 1st parameter is string", 3, Object.getOwnPropertyDescriptor('foo', 'length').value)) return false;
return true;
}
RunAllTests();