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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
*
* Date: 20 Feb 2002
* SUMMARY: Testing the comparison |undefined === null|
* See http://bugzilla.mozilla.org/show_bug.cgi?id=126722
*
*/
//-----------------------------------------------------------------------------
var UBound = 0;
var BUGNUMBER = 126722;
var summary = 'Testing the comparison |undefined === null|';
var status = '';
var statusitems = [];
var actual = '';
var actualvalues = [];
var expect= '';
var expectedvalues = [];
status = inSection(1);
if (undefined === null)
actual = true;
else
actual = false;
expect = false;
addThis();
status = inSection(2);
switch(true)
{
case (undefined === null) :
actual = true;
break;
default:
actual = false;
}
expect = false;
addThis();
status = inSection(3);
function f3(x)
{
var res = false;
switch(true)
{
case (x === null) :
res = true;
break;
default:
// do nothing
}
return res;
}
actual = f3(undefined);
expect = false;
addThis();
status = inSection(4);
function f4(arr)
{
var elt = '';
var res = false;
for (i=0; i<arr.length; i++)
{
elt = arr[i];
switch(true)
{
case (elt === null) :
res = true;
break;
default:
// do nothing
}
}
return res;
}
var arr = Array('a', undefined);
actual = f4(arr);
expect = false;
addThis();
status = inSection(5);
function f5(arr)
{
var len = arr.length;
for(var i=0; (arr[i]===undefined) && (i<len); i++)
; //do nothing
return i;
}
/*
* An array of 5 undefined elements. Note:
*
* The return value of eval(a STATEMENT) is undefined.
* A non-existent PROPERTY is undefined, not a ReferenceError.
* No undefined element exists AFTER trailing comma at end.
*
*/
var arrUndef = [ , undefined, eval('var x = 0'), this.NOT_A_PROPERTY, , ];
actual = f5(arrUndef);
expect = 5;
addThis();
status = inSection(6);
function f6(arr)
{
var len = arr.length;
for(var i=0; (arr[i]===null) && (i<len); i++)
; //do nothing
return i;
}
/*
* Use same array as above. This time we're comparing to |null|, so we expect 0
*/
actual = f6(arrUndef);
expect = 0;
addThis();
//-----------------------------------------------------------------------------
test();
//-----------------------------------------------------------------------------
function addThis()
{
statusitems[UBound] = status;
actualvalues[UBound] = actual;
expectedvalues[UBound] = expect;
UBound++;
}
function test()
{
enterFunc('test');
printBugNumber(BUGNUMBER);
printStatus(summary);
for (var i=0; i<UBound; i++)
{
reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
}
exitFunc ('test');
}
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