JSTests/mozilla/ecma/String/15.5.4.8-3.js

/* The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code, released March
 * 31, 1998.
 *
 * The Initial Developer of the Original Code is Netscape Communications
 * Corporation. Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 * 
 */
/**
    File Name:          15.5.4.8-3.js
    ECMA Section:       15.5.4.8 String.prototype.split( separator )
    Description:

    Returns an Array object into which substrings of the result of converting
    this object to a string have been stored. The substrings are determined by
    searching from left to right for occurrences of the given separator; these
    occurrences are not part of any substring in the returned array, but serve
    to divide up this string value. The separator may be a string of any length.

    As a special case, if the separator is the empty string, the string is split
    up into individual characters; the length of the result array equals the
    length of the string, and each substring contains one character.

    If the separator is not supplied, then the result array contains just one
    string, which is the string.

    When the split method is called with one argument separator, the following steps are taken:

   1.   Call ToString, giving it the this value as its argument.
   2.   Create a new Array object of length 0 and call it A.
   3.   If separator is not supplied, call the [[Put]] method of A with 0 and
        Result(1) as arguments, and then return A.
   4.   Call ToString(separator).
   5.   Compute the number of characters in Result(1).
   6.   Compute the number of characters in the string that is Result(4).
   7.   Let p be 0.
   8.   If Result(6) is zero (the separator string is empty), go to step 17.
   9.   Compute the smallest possible integer k not smaller than p such that
        k+Result(6) is not greater than Result(5), and for all nonnegative
        integers j less than Result(6), the character at position k+j of
        Result(1) is the same as the character at position j of Result(2);
        but if there is no such integer k, then go to step 14.
  10.   Compute a string value equal to the substring of Result(1), consisting
        of the characters at positions p through k1, inclusive.
  11.   Call the [[Put]] method of A with A.length and Result(10) as arguments.
  12.   Let p be k+Result(6).
  13.   Go to step 9.
  14.   Compute a string value equal to the substring of Result(1), consisting
        of the characters from position p to the end of Result(1).
  15.   Call the [[Put]] method of A with A.length and Result(14) as arguments.
  16.   Return A.
  17.   If p equals Result(5), return A.
  18.   Compute a string value equal to the substring of Result(1), consisting of
        the single character at position p.
  19.   Call the [[Put]] method of A with A.length and Result(18) as arguments.
  20.   Increase p by 1.
  21.   Go to step 17.

Note that the split function is intentionally generic; it does not require that its this value be a String
object. Therefore it can be transferred to other kinds of objects for use as a method.

    Author:             christine@netscape.com
    Date:               12 november 1997
*/

    var SECTION = "15.5.4.8-3";
    var VERSION = "ECMA_1";
    startTest();
    var TITLE   = "String.prototype.split";

    writeHeaderToLog( SECTION + " "+ TITLE);

    var testcases = getTestCases();
    test();

function getTestCases() {
    var array = new Array();
    var item = 0;

    var TEST_STRING = "";
    var EXPECT = new Array();

    // this.toString is the empty string.

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(); s.split().length",
                                    1,
                                    eval("var s = new String(); s.split().length") );

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(); s.split()[0]",
                                    "",
                                    eval("var s = new String(); s.split()[0]") );

    // this.toString() is the empty string, separator is specified.

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(); s.split('').length",
                                    0,
                                    eval("var s = new String(); s.split('').length") );

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(); s.split(' ').length",
                                    1,
                                    eval("var s = new String(); s.split(' ').length") );

    // this to string is " "
    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(' '); s.split().length",
                                    1,
                                    eval("var s = new String(' '); s.split().length") );

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(' '); s.split()[0]",
                                    " ",
                                    eval("var s = new String(' '); s.split()[0]") );

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(' '); s.split('').length",
                                    1,
                                    eval("var s = new String(' '); s.split('').length") );

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(' '); s.split('')[0]",
                                    " ",
                                    eval("var s = new String(' '); s.split('')[0]") );

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(' '); s.split(' ').length",
                                    2,
                                    eval("var s = new String(' '); s.split(' ').length") );

    array[item++] = new TestCase(   SECTION,
                                    "var s = new String(' '); s.split(' ')[0]",
                                    "",
                                    eval("var s = new String(' '); s.split(' ')[0]") );

    array[item++] = new TestCase(   SECTION,
                                    "\"\".split(\"\").length",
                                    0,
                                    ("".split("")).length );

    array[item++] = new TestCase(   SECTION,
                                    "\"\".split(\"x\").length",
                                    1,
                                    ("".split("x")).length );

    array[item++] = new TestCase(   SECTION,
                                    "\"\".split(\"x\")[0]",
                                    "",
                                    ("".split("x"))[0] );

    return array;
}
function test() {
    for ( tc=0; tc < testcases.length; tc++ ) {
        testcases[tc].passed = writeTestCaseResult(
                            testcases[tc].expect,
                            testcases[tc].actual,
                            testcases[tc].description +" = "+
                            testcases[tc].actual );

        testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
    }
    stopTest();
    return ( testcases );
}
function Split( string, separator ) {
    string = String( string );

    var A = new Array();

    if ( arguments.length < 2 ) {
        A[0] = string;
        return A;
    }

    separator = String( separator );

    var str_len = String( string ).length;
    var sep_len = String( separator ).length;

    var p = 0;
    var k = 0;

    if ( sep_len == 0 ) {
        for ( ; p < str_len; p++ ) {
            A[A.length] = String( string.charAt(p) );
        }
    }
    return A;
}