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 File Name: 15.5.4.8-2.js 24 ECMA Section: 15.5.4.8 String.prototype.split( separator ) 25 Description: 26 27 Returns an Array object into which substrings of the result of converting 28 this object to a string have been stored. The substrings are determined by 29 searching from left to right for occurrences of the given separator; these 30 occurrences are not part of any substring in the returned array, but serve 31 to divide up this string value. The separator may be a string of any length. 32 33 As a special case, if the separator is the empty string, the string is split 34 up into individual characters; the length of the result array equals the 35 length of the string, and each substring contains one character. 36 37 If the separator is not supplied, then the result array contains just one 38 string, which is the string. 39 40 When the split method is called with one argument separator, the following steps are taken: 41 42 1. Call ToString, giving it the this value as its argument. 43 2. Create a new Array object of length 0 and call it A. 44 3. If separator is not supplied, call the [[Put]] method of A with 0 and 45 Result(1) as arguments, and then return A. 46 4. Call ToString(separator). 47 5. Compute the number of characters in Result(1). 48 6. Compute the number of characters in the string that is Result(4). 49 7. Let p be 0. 50 8. If Result(6) is zero (the separator string is empty), go to step 17. 51 9. Compute the smallest possible integer k not smaller than p such that 52 k+Result(6) is not greater than Result(5), and for all nonnegative 53 integers j less than Result(6), the character at position k+j of 54 Result(1) is the same as the character at position j of Result(2); 55 but if there is no such integer k, then go to step 14. 56 10. Compute a string value equal to the substring of Result(1), consisting 57 of the characters at positions p through k1, inclusive. 58 11. Call the [[Put]] method of A with A.length and Result(10) as arguments. 59 12. Let p be k+Result(6). 60 13. Go to step 9. 61 14. Compute a string value equal to the substring of Result(1), consisting 62 of the characters from position p to the end of Result(1). 63 15. Call the [[Put]] method of A with A.length and Result(14) as arguments. 64 16. Return A. 65 17. If p equals Result(5), return A. 66 18. Compute a string value equal to the substring of Result(1), consisting of 67 the single character at position p. 68 19. Call the [[Put]] method of A with A.length and Result(18) as arguments. 69 20. Increase p by 1. 70 21. Go to step 17. 71 72 Note that the split function is intentionally generic; it does not require that its this value be a String 73 object. Therefore it can be transferred to other kinds of objects for use as a method. 74 75 Author: christine (at) netscape.com 76 Date: 12 november 1997 77 */ 78 79 var SECTION = "15.5.4.8-2"; 80 var VERSION = "ECMA_1"; 81 startTest(); 82 var TITLE = "String.prototype.split"; 83 84 writeHeaderToLog( SECTION + " "+ TITLE); 85 86 var testcases = getTestCases(); 87 test(); 88 89 function getTestCases() { 90 var array = new Array(); 91 var item = 0; 92 93 // case where separator is the empty string. 94 95 var TEST_STRING = "this is a string object"; 96 97 array[item++] = new TestCase( SECTION, 98 "var s = new String( "+ TEST_STRING +" ); s.split('').length", 99 TEST_STRING.length, 100 eval("var s = new String( TEST_STRING ); s.split('').length") ); 101 102 for ( var i = 0; i < TEST_STRING.length; i++ ) { 103 104 array[item++] = new TestCase( SECTION, 105 "var s = new String( "+TEST_STRING+" ); s.split('')["+i+"]", 106 TEST_STRING.charAt(i), 107 eval("var s = new String( TEST_STRING ); s.split('')["+i+"]") ); 108 } 109 110 // case where the value of the separator is undefined. in this case. the value of the separator 111 // should be ToString( separator ), or "undefined". 112 113 var TEST_STRING = "thisundefinedisundefinedaundefinedstringundefinedobject"; 114 var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); 115 116 array[item++] = new TestCase( SECTION, 117 "var s = new String( "+ TEST_STRING +" ); s.split(void 0).length", 118 EXPECT_STRING.length, 119 eval("var s = new String( TEST_STRING ); s.split(void 0).length") ); 120 121 for ( var i = 0; i < EXPECT_STRING.length; i++ ) { 122 array[item++] = new TestCase( SECTION, 123 "var s = new String( "+TEST_STRING+" ); s.split(void 0)["+i+"]", 124 EXPECT_STRING[i], 125 eval("var s = new String( TEST_STRING ); s.split(void 0)["+i+"]") ); 126 } 127 128 // case where the value of the separator is null. in this case the value of the separator is "null". 129 TEST_STRING = "thisnullisnullanullstringnullobject"; 130 var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); 131 132 array[item++] = new TestCase( SECTION, 133 "var s = new String( "+ TEST_STRING +" ); s.split(null).length", 134 EXPECT_STRING.length, 135 eval("var s = new String( TEST_STRING ); s.split(null).length") ); 136 137 for ( var i = 0; i < EXPECT_STRING.length; i++ ) { 138 array[item++] = new TestCase( SECTION, 139 "var s = new String( "+TEST_STRING+" ); s.split(null)["+i+"]", 140 EXPECT_STRING[i], 141 eval("var s = new String( TEST_STRING ); s.split(null)["+i+"]") ); 142 } 143 144 // case where the value of the separator is a boolean. 145 TEST_STRING = "thistrueistrueatruestringtrueobject"; 146 var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); 147 148 array[item++] = new TestCase( SECTION, 149 "var s = new String( "+ TEST_STRING +" ); s.split(true).length", 150 EXPECT_STRING.length, 151 eval("var s = new String( TEST_STRING ); s.split(true).length") ); 152 153 for ( var i = 0; i < EXPECT_STRING.length; i++ ) { 154 array[item++] = new TestCase( SECTION, 155 "var s = new String( "+TEST_STRING+" ); s.split(true)["+i+"]", 156 EXPECT_STRING[i], 157 eval("var s = new String( TEST_STRING ); s.split(true)["+i+"]") ); 158 } 159 160 // case where the value of the separator is a number 161 TEST_STRING = "this123is123a123string123object"; 162 var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); 163 164 array[item++] = new TestCase( SECTION, 165 "var s = new String( "+ TEST_STRING +" ); s.split(123).length", 166 EXPECT_STRING.length, 167 eval("var s = new String( TEST_STRING ); s.split(123).length") ); 168 169 for ( var i = 0; i < EXPECT_STRING.length; i++ ) { 170 array[item++] = new TestCase( SECTION, 171 "var s = new String( "+TEST_STRING+" ); s.split(123)["+i+"]", 172 EXPECT_STRING[i], 173 eval("var s = new String( TEST_STRING ); s.split(123)["+i+"]") ); 174 } 175 176 177 // case where the value of the separator is a number 178 TEST_STRING = "this123is123a123string123object"; 179 var EXPECT_STRING = new Array( "this", "is", "a", "string", "object" ); 180 181 array[item++] = new TestCase( SECTION, 182 "var s = new String( "+ TEST_STRING +" ); s.split(123).length", 183 EXPECT_STRING.length, 184 eval("var s = new String( TEST_STRING ); s.split(123).length") ); 185 186 for ( var i = 0; i < EXPECT_STRING.length; i++ ) { 187 array[item++] = new TestCase( SECTION, 188 "var s = new String( "+TEST_STRING+" ); s.split(123)["+i+"]", 189 EXPECT_STRING[i], 190 eval("var s = new String( TEST_STRING ); s.split(123)["+i+"]") ); 191 } 192 193 // case where the separator is not in the string 194 TEST_STRING = "this is a string"; 195 EXPECT_STRING = new Array( "this is a string" ); 196 197 array[item++] = new TestCase( SECTION, 198 "var s = new String( " + TEST_STRING + " ); s.split(':').length", 199 1, 200 eval("var s = new String( TEST_STRING ); s.split(':').length") ); 201 202 array[item++] = new TestCase( SECTION, 203 "var s = new String( " + TEST_STRING + " ); s.split(':')[0]", 204 TEST_STRING, 205 eval("var s = new String( TEST_STRING ); s.split(':')[0]") ); 206 207 // case where part but not all of separator is in the string. 208 TEST_STRING = "this is a string"; 209 EXPECT_STRING = new Array( "this is a string" ); 210 array[item++] = new TestCase( SECTION, 211 "var s = new String( " + TEST_STRING + " ); s.split('strings').length", 212 1, 213 eval("var s = new String( TEST_STRING ); s.split('strings').length") ); 214 215 array[item++] = new TestCase( SECTION, 216 "var s = new String( " + TEST_STRING + " ); s.split('strings')[0]", 217 TEST_STRING, 218 eval("var s = new String( TEST_STRING ); s.split('strings')[0]") ); 219 220 // case where the separator is at the end of the string 221 TEST_STRING = "this is a string"; 222 EXPECT_STRING = new Array( "this is a " ); 223 array[item++] = new TestCase( SECTION, 224 "var s = new String( " + TEST_STRING + " ); s.split('string').length", 225 2, 226 eval("var s = new String( TEST_STRING ); s.split('string').length") ); 227 228 for ( var i = 0; i < EXPECT_STRING.length; i++ ) { 229 array[item++] = new TestCase( SECTION, 230 "var s = new String( "+TEST_STRING+" ); s.split('string')["+i+"]", 231 EXPECT_STRING[i], 232 eval("var s = new String( TEST_STRING ); s.split('string')["+i+"]") ); 233 } 234 return array; 235 } 236 function test() { 237 for ( tc=0; tc < testcases.length; tc++ ) { 238 testcases[tc].passed = writeTestCaseResult( 239 testcases[tc].expect, 240 testcases[tc].actual, 241 testcases[tc].description +" = "+ 242 testcases[tc].actual ); 243 244 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 245 } 246 stopTest(); 247 return ( testcases ); 248 } 249
