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/* -*- tab-width: 2; 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/. */
/**
Filename: slice.js
Description: 'This tests out some of the functionality on methods on the Array objects'
Author: Nick Lerissa
Date: Fri Feb 13 09:58:28 PST 1998
*/
var SECTION = 'As described in Netscape doc "Whats new in JavaScript 1.2"';
var VERSION = 'no version';
startTest();
var TITLE = 'String:slice';
writeHeaderToLog('Executing script: slice.js');
writeHeaderToLog( SECTION + " "+ TITLE);
var a = ['a','test string',456,9.34,new String("string object"),[],['h','i','j','k']];
var b = [1,2,3,4,5,6,7,8,9,0];
exhaustiveSliceTest("exhaustive slice test 1", a);
exhaustiveSliceTest("exhaustive slice test 2", b);
test();
function mySlice(a, from, to)
{
var from2 = from;
var to2 = to;
var returnArray = [];
var i;
if (from2 < 0) from2 = a.length + from;
if (to2 < 0) to2 = a.length + to;
if ((to2 > from2)&&(to2 > 0)&&(from2 < a.length))
{
if (from2 < 0) from2 = 0;
if (to2 > a.length) to2 = a.length;
for (i = from2; i < to2; ++i) returnArray.push(a[i]);
}
return returnArray;
}
// This function tests the slice command on an Array
// passed in. The arguments passed into slice range in
// value from -5 to the length of the array + 4. Every
// combination of the two arguments is tested. The expected
// result of the slice(...) method is calculated and
// compared to the actual result from the slice(...) method.
// If the Arrays are not similar false is returned.
function exhaustiveSliceTest(testname, a)
{
var x = 0;
var y = 0;
var errorMessage;
var reason = "";
var passed = true;
for (x = -(2 + a.length); x <= (2 + a.length); x++)
for (y = (2 + a.length); y >= -(2 + a.length); y--)
{
var b = a.slice(x,y);
var c = mySlice(a,x,y);
if (String(b) != String(c))
{
errorMessage =
"ERROR: 'TEST FAILED' ERROR: 'TEST FAILED' ERROR: 'TEST FAILED'\n" +
" test: " + "a.slice(" + x + "," + y + ")\n" +
" a: " + String(a) + "\n" +
" actual result: " + String(b) + "\n" +
" expected result: " + String(c) + "\n";
writeHeaderToLog(errorMessage);
reason = reason + errorMessage;
passed = false;
}
}
var testCase = new TestCase(SECTION, testname, true, passed);
if (passed == false)
testCase.reason = reason;
return testCase;
}
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