tests/mozilla/ecma/String/15.5.4.4-2.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:          15.5.4.4-1.js
  24     ECMA Section:       15.5.4.4 String.prototype.charAt(pos)
  25     Description:        Returns a string containing the character at position
  26                         pos in the string.  If there is no character at that
  27                         string, the result is the empty string.  The result is
  28                         a string value, not a String object.
  29
  30                         When the charAt method is called with one argument,
  31                         pos, the following steps are taken:
  32                         1. Call ToString, with this value as its argument
  33                         2. Call ToInteger pos
  34                         3. Compute the number of characters  in Result(1)
  35                         4. If Result(2) is less than 0 is or not less than
  36                            Result(3), return the empty string
  37                         5. Return a string of length 1 containing one character
  38                            from result (1), the character at position Result(2).
  39
  40                         Note that the charAt function is intentionally generic;
  41                         it does not require that its this value be a String
  42                         object.  Therefore it can be transferred to other kinds
  43                         of objects for use as a method.
  44
  45     Author:             christine@netscape.com
  46     Date:               2 october 1997
  47 */
  48     var SECTION = "15.5.4.4-2";
  49     var VERSION = "ECMA_1";
  50     startTest();
  51     var TITLE   = "String.prototype.charAt";
  52
  53     writeHeaderToLog( SECTION + " "+ TITLE);
  54
  55     var testcases = getTestCases();
  56     test();
  57
  58 function getTestCases() {
  59     var array = new Array();
  60     var item = 0;
  61     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(0)", "t",    eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(0)") );
  62     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(1)", "r",    eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(1)") );
  63     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(2)", "u",    eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(2)") );
  64     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(3)", "e",    eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(3)") );
  65     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(4)", "",     eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(4)") );
  66     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(-1)", "",    eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(-1)") );
  67
  68     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(true)", "r",    eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(true)") );
  69     array[item++] = new TestCase( SECTION,     "x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(false)", "t",    eval("x = new Boolean(true); x.charAt=String.prototype.charAt;x.charAt(false)") );
  70
  71     array[item++] = new TestCase( SECTION,     "x = new String(); x.charAt(0)",    "",     eval("x=new String();x.charAt(0)") );
  72     array[item++] = new TestCase( SECTION,     "x = new String(); x.charAt(1)",    "",     eval("x=new String();x.charAt(1)") );
  73     array[item++] = new TestCase( SECTION,     "x = new String(); x.charAt(-1)",   "",     eval("x=new String();x.charAt(-1)") );
  74
  75     array[item++] = new TestCase( SECTION,     "x = new String(); x.charAt(NaN)",  "",     eval("x=new String();x.charAt(Number.NaN)") );
  76     array[item++] = new TestCase( SECTION,     "x = new String(); x.charAt(Number.POSITIVE_INFINITY)",   "",     eval("x=new String();x.charAt(Number.POSITIVE_INFINITY)") );
  77     array[item++] = new TestCase( SECTION,     "x = new String(); x.charAt(Number.NEGATIVE_INFINITY)",   "",     eval("x=new String();x.charAt(Number.NEGATIVE_INFINITY)") );
  78
  79     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(0)",  "1",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(0)") );
  80     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(1)",  "2",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(1)") );
  81     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(2)",  "3",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(2)") );
  82     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(3)",  "4",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(3)") );
  83     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(4)",  "5",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(4)") );
  84     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(5)",  "6",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(5)") );
  85     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(6)",  "7",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(6)") );
  86     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(7)",  "8",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(7)") );
  87     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(8)",  "9",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(8)") );
  88     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(9)",  "0",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(9)") );
  89     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(10)",  "",       eval("var MYOB = new MyObject(1234567890); MYOB.charAt(10)") );
  90
  91     array[item++] = new TestCase( SECTION,      "var MYOB = new MyObject(1234567890); MYOB.charAt(Math.PI)",  "4",        eval("var MYOB = new MyObject(1234567890); MYOB.charAt(Math.PI)") );
  92
  93     // MyOtherObject.toString will return "[object Object]
  94
  95     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(0)",  "[",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(0)") );
  96     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(1)",  "o",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(1)") );
  97     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(2)",  "b",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(2)") );
  98     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(3)",  "j",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(3)") );
  99     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(4)",  "e",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(4)") );
 100     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(5)",  "c",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(5)") );
 101     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(6)",  "t",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(6)") );
 102     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(7)",  " ",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(7)") );
 103     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(8)",  "O",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(8)") );
 104     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(9)",  "b",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(9)") );
 105     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(10)",  "j",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(10)") );
 106     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(11)",  "e",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(11)") );
 107     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(12)",  "c",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(12)") );
 108     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(13)",  "t",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(13)") );
 109     array[item++] = new TestCase( SECTION,      "var MYOB = new MyOtherObject(1234567890); MYOB.charAt(14)",  "]",        eval("var MYOB = new MyOtherObject(1234567890); MYOB.charAt(14)") );
 110
 111     return (array );
 112 }
 113
 114 function test() {
 115         for ( tc = 0; tc < testcases.length; tc++ ) {
 116             testcases[tc].passed = writeTestCaseResult(
 117                     testcases[tc].expect,
 118                     testcases[tc].actual,
 119                     testcases[tc].description +" = "+
 120                     testcases[tc].actual );
 121
 122             testcases[tc].reason += ( testcases[tc].passed )
 123                                     ? ""
 124                                     : "wrong value "
 125         }
 126
 127         stopTest();
 128         return ( testcases );
 129 }
 130
 131 function MyObject( value ) {
 132     this.value      = value;
 133     this.valueOf    = new Function( "return this.value;" );
 134     this.toString   = new Function( "return this.value +''" );
 135     this.charAt     = String.prototype.charAt;
 136 }
 137 function MyOtherObject(value) {
 138     this.value      = value;
 139     this.valueOf    = new Function( "return this.value;" );
 140     this.charAt     = String.prototype.charAt;
 141 }