1/* The contents of this file are subject to the Netscape Public 2 * License Version 1.1 (the "License"); you may not use this file 3 * except in compliance with the License. You may obtain a copy of 4 * the License at http://www.mozilla.org/NPL/ 5 * 6 * Software distributed under the License is distributed on an "AS 7 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 8 * implied. See the License for the specific language governing 9 * rights and limitations under the License. 10 * 11 * The Original Code is Mozilla Communicator client code, released March 12 * 31, 1998. 13 * 14 * The Initial Developer of the Original Code is Netscape Communications 15 * Corporation. Portions created by Netscape are 16 * Copyright (C) 1998 Netscape Communications Corporation. All 17 * Rights Reserved. 18 * 19 * Contributor(s): 20 * 21 */ 22/** 23 Filename: slice.js 24 Description: 'This tests the String object method: slice' 25 26 Author: Nick Lerissa 27 Date: Fri Feb 13 09:58:28 PST 1998 28*/ 29 30 var SECTION = 'As described in Netscape doc "Whats new in JavaScript 1.2"'; 31 var VERSION = 'no version'; 32 startTest(); 33 var TITLE = 'String.slice'; 34 35 writeHeaderToLog('Executing script: slice.js'); 36 writeHeaderToLog( SECTION + " "+ TITLE); 37 38 var count = 0; 39 var testcases = new Array(); 40 41 42 function myStringSlice(a, from, to) 43 { 44 var from2 = from; 45 var to2 = to; 46 var returnString = new String(""); 47 var i; 48 49 if (from2 < 0) from2 = a.length + from; 50 if (to2 < 0) to2 = a.length + to; 51 52 if ((to2 > from2)&&(to2 > 0)&&(from2 < a.length)) 53 { 54 if (from2 < 0) from2 = 0; 55 if (to2 > a.length) to2 = a.length; 56 57 for (i = from2; i < to2; ++i) returnString += a.charAt(i); 58 } 59 return returnString; 60 } 61 62 // This function tests the slice command on a String 63 // passed in. The arguments passed into slice range in 64 // value from -5 to the length of the array + 4. Every 65 // combination of the two arguments is tested. The expected 66 // result of the slice(...) method is calculated and 67 // compared to the actual result from the slice(...) method. 68 // If the Strings are not similar false is returned. 69 function exhaustiveStringSliceTest(testname, a) 70 { 71 var x = 0; 72 var y = 0; 73 var errorMessage; 74 var reason = ""; 75 var passed = true; 76 77 for (x = -(2 + a.length); x <= (2 + a.length); x++) 78 for (y = (2 + a.length); y >= -(2 + a.length); y--) 79 { 80 var b = a.slice(x,y); 81 var c = myStringSlice(a,x,y); 82 83 if (String(b) != String(c)) 84 { 85 errorMessage = 86 "ERROR: 'TEST FAILED' ERROR: 'TEST FAILED' ERROR: 'TEST FAILED'\n" + 87 " test: " + "a.slice(" + x + "," + y + ")\n" + 88 " a: " + String(a) + "\n" + 89 " actual result: " + String(b) + "\n" + 90 " expected result: " + String(c) + "\n"; 91 writeHeaderToLog(errorMessage); 92 reason = reason + errorMessage; 93 passed = false; 94 } 95 } 96 var testCase = new TestCase(SECTION, testname, true, passed); 97 if (passed == false) 98 testCase.reason = reason; 99 return testCase; 100 } 101 102 var a = new String("abcdefghijklmnopqrstuvwxyz1234567890"); 103 var b = new String("this is a test string"); 104 105 testcases[count++] = exhaustiveStringSliceTest("exhaustive String.slice test 1", a); 106 testcases[count++] = exhaustiveStringSliceTest("exhaustive String.slice test 2", b); 107 108 function test() 109 { 110 for ( tc=0; tc < testcases.length; tc++ ) { 111 testcases[tc].passed = writeTestCaseResult( 112 testcases[tc].expect, 113 testcases[tc].actual, 114 testcases[tc].description +" = "+ 115 testcases[tc].actual ); 116 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 117 } 118 stopTest(); 119 return ( testcases ); 120 } 121 122 test(); 123 124