tests/mozilla/ecma/String/15.5.4.8-3.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:          15.5.4.8-3.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 = "15.5.4.8-3";
  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     var TEST_STRING = "";
  94     var EXPECT = new Array();
  95
  96     // this.toString is the empty string.
  97
  98     array[item++] = new TestCase(   SECTION,
  99                                     "var s = new String(); s.split().length",
 100                                     1,
 101                                     eval("var s = new String(); s.split().length") );
 102
 103     array[item++] = new TestCase(   SECTION,
 104                                     "var s = new String(); s.split()[0]",
 105                                     "",
 106                                     eval("var s = new String(); s.split()[0]") );
 107
 108     // this.toString() is the empty string, separator is specified.
 109
 110     array[item++] = new TestCase(   SECTION,
 111                                     "var s = new String(); s.split('').length",
 112                                     0,
 113                                     eval("var s = new String(); s.split('').length") );
 114
 115     array[item++] = new TestCase(   SECTION,
 116                                     "var s = new String(); s.split(' ').length",
 117                                     1,
 118                                     eval("var s = new String(); s.split(' ').length") );
 119
 120     // this to string is " "
 121     array[item++] = new TestCase(   SECTION,
 122                                     "var s = new String(' '); s.split().length",
 123                                     1,
 124                                     eval("var s = new String(' '); s.split().length") );
 125
 126     array[item++] = new TestCase(   SECTION,
 127                                     "var s = new String(' '); s.split()[0]",
 128                                     " ",
 129                                     eval("var s = new String(' '); s.split()[0]") );
 130
 131     array[item++] = new TestCase(   SECTION,
 132                                     "var s = new String(' '); s.split('').length",
 133                                     1,
 134                                     eval("var s = new String(' '); s.split('').length") );
 135
 136     array[item++] = new TestCase(   SECTION,
 137                                     "var s = new String(' '); s.split('')[0]",
 138                                     " ",
 139                                     eval("var s = new String(' '); s.split('')[0]") );
 140
 141     array[item++] = new TestCase(   SECTION,
 142                                     "var s = new String(' '); s.split(' ').length",
 143                                     2,
 144                                     eval("var s = new String(' '); s.split(' ').length") );
 145
 146     array[item++] = new TestCase(   SECTION,
 147                                     "var s = new String(' '); s.split(' ')[0]",
 148                                     "",
 149                                     eval("var s = new String(' '); s.split(' ')[0]") );
 150
 151     array[item++] = new TestCase(   SECTION,
 152                                     "\"\".split(\"\").length",
 153                                     0,
 154                                     ("".split("")).length );
 155
 156     array[item++] = new TestCase(   SECTION,
 157                                     "\"\".split(\"x\").length",
 158                                     1,
 159                                     ("".split("x")).length );
 160
 161     array[item++] = new TestCase(   SECTION,
 162                                     "\"\".split(\"x\")[0]",
 163                                     "",
 164                                     ("".split("x"))[0] );
 165
 166     return array;
 167 }
 168 function test() {
 169     for ( tc=0; tc < testcases.length; tc++ ) {
 170         testcases[tc].passed = writeTestCaseResult(
 171                             testcases[tc].expect,
 172                             testcases[tc].actual,
 173                             testcases[tc].description +" = "+
 174                             testcases[tc].actual );
 175
 176         testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
 177     }
 178     stopTest();
 179     return ( testcases );
 180 }
 181 function Split( string, separator ) {
 182     string = String( string );
 183
 184     var A = new Array();
 185
 186     if ( arguments.length < 2 ) {
 187         A[0] = string;
 188         return A;
 189     }
 190
 191     separator = String( separator );
 192
 193     var str_len = String( string ).length;
 194     var sep_len = String( separator ).length;
 195
 196     var p = 0;
 197     var k = 0;
 198
 199     if ( sep_len == 0 ) {
 200         for ( ; p < str_len; p++ ) {
 201             A[A.length] = String( string.charAt(p) );
 202         }
 203     }
 204     return A;
 205 }