michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: 
michael@0: /**
michael@0:    Filename:     slice.js
michael@0:    Description:  'This tests the String object method: slice'
michael@0: 
michael@0:    Author:       Nick Lerissa
michael@0:    Date:         Fri Feb 13 09:58:28 PST 1998
michael@0: */
michael@0: 
michael@0: var SECTION = 'As described in Netscape doc "Whats new in JavaScript 1.2"';
michael@0: var VERSION = 'no version';
michael@0: startTest();
michael@0: var TITLE = 'String.slice';
michael@0: 
michael@0: writeHeaderToLog('Executing script: slice.js');
michael@0: writeHeaderToLog( SECTION + " "+ TITLE);
michael@0: 
michael@0: var a = new String("abcdefghijklmnopqrstuvwxyz1234567890");
michael@0: var b = new String("this is a test string");
michael@0: 
michael@0: exhaustiveStringSliceTest("exhaustive String.slice test 1", a);
michael@0: exhaustiveStringSliceTest("exhaustive String.slice test 2", b);
michael@0: 
michael@0: test();
michael@0: 
michael@0: 
michael@0: function myStringSlice(a, from, to)
michael@0: {
michael@0:   var from2        = from;
michael@0:   var to2          = to;
michael@0:   var returnString = new String("");
michael@0:   var i;
michael@0: 
michael@0:   if (from2 < 0) from2 = a.length + from;
michael@0:   if (to2 < 0)   to2   = a.length + to;
michael@0: 
michael@0:   if ((to2 > from2)&&(to2 > 0)&&(from2 < a.length))
michael@0:   {
michael@0:     if (from2 < 0)        from2 = 0;
michael@0:     if (to2 > a.length) to2 = a.length;
michael@0: 
michael@0:     for (i = from2; i < to2; ++i) returnString += a.charAt(i);
michael@0:   }
michael@0:   return returnString;
michael@0: }
michael@0: 
michael@0: // This function tests the slice command on a String
michael@0: // passed in. The arguments passed into slice range in
michael@0: // value from -5 to the length of the array + 4. Every
michael@0: // combination of the two arguments is tested. The expected
michael@0: // result of the slice(...) method is calculated and
michael@0: // compared to the actual result from the slice(...) method.
michael@0: // If the Strings are not similar false is returned.
michael@0: function exhaustiveStringSliceTest(testname, a)
michael@0: {
michael@0:   var x = 0;
michael@0:   var y = 0;
michael@0:   var errorMessage;
michael@0:   var reason = "";
michael@0:   var passed = true;
michael@0: 
michael@0:   for (x = -(2 + a.length); x <= (2 + a.length); x++)
michael@0:     for (y = (2 + a.length); y >= -(2 + a.length); y--)
michael@0:     {
michael@0:       var b  = a.slice(x,y);
michael@0:       var c = myStringSlice(a,x,y);
michael@0: 
michael@0:       if (String(b) != String(c))
michael@0:       {
michael@0: 	errorMessage =
michael@0: 	  "ERROR: 'TEST FAILED' ERROR: 'TEST FAILED' ERROR: 'TEST FAILED'\n" +
michael@0: 	  "            test: " + "a.slice(" + x + "," + y + ")\n" +
michael@0: 	  "               a: " + String(a) + "\n" +
michael@0: 	  "   actual result: " + String(b) + "\n" +
michael@0: 	  " expected result: " + String(c) + "\n";
michael@0: 	writeHeaderToLog(errorMessage);
michael@0: 	reason = reason + errorMessage;
michael@0: 	passed = false;
michael@0:       }
michael@0:     }
michael@0:   var testCase = new TestCase(SECTION, testname, true, passed);
michael@0:   if (passed == false)
michael@0:     testCase.reason = reason;
michael@0:   return testCase;
michael@0: }