| /* -*- 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 the String object method: slice' |
| |
| 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 = new String("abcdefghijklmnopqrstuvwxyz1234567890"); |
| var b = new String("this is a test string"); |
| |
| exhaustiveStringSliceTest("exhaustive String.slice test 1", a); |
| exhaustiveStringSliceTest("exhaustive String.slice test 2", b); |
| |
| test(); |
| |
| |
| function myStringSlice(a, from, to) |
| { |
| var from2 = from; |
| var to2 = to; |
| var returnString = new String(""); |
| 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) returnString += a.charAt(i); |
| } |
| return returnString; |
| } |
| |
| // This function tests the slice command on a String |
| // 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 Strings are not similar false is returned. |
| function exhaustiveStringSliceTest(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 = myStringSlice(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; |
| } |