tests/mozilla/ecma/Array/15.4.4.4-2.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:          15.4.4.3-1.js
  24     ECMA Section:       15.4.4.3-1 Array.prototype.reverse()
  25     Description:
  26
  27     The elements of the array are rearranged so as to reverse their order.
  28     This object is returned as the result of the call.
  29
  30    1.   Call the [[Get]] method of this object with argument "length".
  31    2.   Call ToUint32(Result(1)).
  32    3.   Compute floor(Result(2)/2).
  33    4.   Let k be 0.
  34    5.   If k equals Result(3), return this object.
  35    6.   Compute Result(2)k1.
  36    7.   Call ToString(k).
  37    8.   ToString(Result(6)).
  38    9.   Call the [[Get]] method of this object with argument Result(7).
  39   10.   Call the [[Get]] method of this object with argument Result(8).
  40   11.   If this object has a property named by Result(8), go to step 12; but
  41         if this object has no property named by Result(8), then go to either
  42         step 12 or step 14, depending on the implementation.
  43   12.   Call the [[Put]] method of this object with arguments Result(7) and
  44         Result(10).
  45   13.   Go to step 15.
  46   14.   Call the [[Delete]] method on this object, providing Result(7) as the
  47         name of the property to delete.
  48   15.   If this object has a property named by Result(7), go to step 16; but if
  49         this object has no property named by Result(7), then go to either step 16
  50         or step 18, depending on the implementation.
  51   16.   Call the [[Put]] method of this object with arguments Result(8) and
  52         Result(9).
  53   17.   Go to step 19.
  54   18.   Call the [[Delete]] method on this object, providing Result(8) as the
  55         name of the property to delete.
  56   19.   Increase k by 1.
  57   20.   Go to step 5.
  58
  59 Note that the reverse function is intentionally generic; it does not require
  60 that its this value be an Array object. Therefore it can be transferred to other
  61 kinds of objects for use as a method. Whether the reverse function can be applied
  62 successfully to a host object is implementation dependent.
  63
  64     Note:   Array.prototype.reverse allows some flexibility in implementation
  65     regarding array indices that have not been populated. This test covers the
  66     cases in which unpopulated indices are not deleted, since the JavaScript
  67     implementation does not delete uninitialzed indices.
  68
  69     Author:             christine@netscape.com
  70     Date:               7 october 1997
  71 */
  72
  73     var SECTION = "15.4.4.4-1";
  74     var VERSION = "ECMA_1";
  75     startTest();
  76     var testcases = new Array();
  77
  78     writeHeaderToLog( SECTION + " Array.prototype.reverse()");
  79
  80     getTestCases();
  81     test();
  82
  83 function getTestCases() {
  84     var ARR_PROTOTYPE = Array.prototype;
  85
  86     testcases[testcases.length] = new TestCase( SECTION, "Array.prototype.reverse.length",           0,      Array.prototype.reverse.length );
  87     testcases[testcases.length] = new TestCase( SECTION, "delete Array.prototype.reverse.length",    false,  delete Array.prototype.reverse.length );
  88     testcases[testcases.length] = new TestCase( SECTION, "delete Array.prototype.reverse.length; Array.prototype.reverse.length",    0, eval("delete Array.prototype.reverse.length; Array.prototype.reverse.length") );
  89
  90     // length of array is 0
  91     testcases[testcases.length] = new TestCase(   SECTION,
  92                                     "var A = new Array();   A.reverse(); A.length",
  93                                     0,
  94                                     eval("var A = new Array();   A.reverse(); A.length") );
  95     return ( testcases );
  96 }
  97 function CheckItems( R, A ) {
  98     for ( var i = 0; i < R.length; i++ ) {
  99         testcases[testcases.length] = new TestCase(
 100                                             SECTION,
 101                                             "A["+i+ "]",
 102                                             R[i],
 103                                             A[i] );
 104     }
 105 }
 106 function test() {
 107     for ( tc=0; tc < testcases.length; tc++ ) {
 108         testcases[tc].passed = writeTestCaseResult(
 109                             testcases[tc].expect,
 110                             testcases[tc].actual,
 111                             testcases[tc].description +" = "+ testcases[tc].actual );
 112         testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
 113     }
 114     stopTest();
 115     return ( testcases );
 116 }
 117 function Object_1( value ) {
 118     this.array = value.split(",");
 119     this.length = this.array.length;
 120     for ( var i = 0; i < this.length; i++ ) {
 121         this[i] = eval(this.array[i]);
 122     }
 123     this.join = Array.prototype.reverse;
 124     this.getClass = Object.prototype.toString;
 125 }
 126 function Reverse( array ) {
 127     var r2 = array.length;
 128     var k = 0;
 129     var r3 = Math.floor( r2/2 );
 130     if ( r3 == k ) {
 131         return array;
 132     }
 133
 134     for ( k = 0;  k < r3; k++ ) {
 135         var r6 = r2 - k - 1;
 136 //        var r7 = String( k );
 137         var r7 = k;
 138         var r8 = String( r6 );
 139
 140         var r9 = array[r7];
 141         var r10 = array[r8];
 142
 143         array[r7] = r10;
 144         array[r8] = r9;
 145     }
 146
 147     return array;
 148 }
 149 function Iterate( array ) {
 150     for ( var i = 0; i < array.length; i++ ) {
 151 //        print( i+": "+ array[String(i)] );
 152     }
 153 }
 154
 155 function Object_1( value ) {
 156     this.array = value.split(",");
 157     this.length = this.array.length;
 158     for ( var i = 0; i < this.length; i++ ) {
 159         this[i] = this.array[i];
 160     }
 161     this.reverse = Array.prototype.reverse;
 162     this.getClass = Object.prototype.toString;
 163 }