tests/mozilla/ecma/String/15.5.4.8-2.js

   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@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.
 111     // Per ES5 15.5.4.14 step 10 this returns the input (unless limit is non-zero).
 112
 113     var TEST_STRING = "thisundefinedisundefinedaundefinedstringundefinedobject";
 114     var EXPECT_STRING = new Array( "thisundefinedisundefinedaundefinedstringundefinedobject" );
 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 }