tests/mozilla/ecma/Expressions/11.6.1-2.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:          11.6.1-2.js
  24     ECMA Section:       11.6.1 The addition operator ( + )
  25     Description:
  26
  27     The addition operator either performs string concatenation or numeric
  28     addition.
  29
  30     The production AdditiveExpression : AdditiveExpression + MultiplicativeExpression
  31     is evaluated as follows:
  32
  33     1.  Evaluate AdditiveExpression.
  34     2.  Call GetValue(Result(1)).
  35     3.  Evaluate MultiplicativeExpression.
  36     4.  Call GetValue(Result(3)).
  37     5.  Call ToPrimitive(Result(2)).
  38     6.  Call ToPrimitive(Result(4)).
  39     7.  If Type(Result(5)) is String or Type(Result(6)) is String, go to step 12.
  40         (Note that this step differs from step 3 in the algorithm for comparison
  41         for the relational operators in using or instead of and.)
  42     8.  Call ToNumber(Result(5)).
  43     9.  Call ToNumber(Result(6)).
  44     10. Apply the addition operation to Result(8) and Result(9). See the discussion below (11.6.3).
  45     11. Return Result(10).
  46     12. Call ToString(Result(5)).
  47     13. Call ToString(Result(6)).
  48     14. Concatenate Result(12) followed by Result(13).
  49     15. Return Result(14).
  50
  51     Note that no hint is provided in the calls to ToPrimitive in steps 5 and 6.
  52     All native ECMAScript objects except Date objects handle the absence of a
  53     hint as if the hint Number were given; Date objects handle the absence of a
  54     hint as if the hint String were given. Host objects may handle the absence
  55     of a hint in some other manner.
  56
  57     This test does only covers cases where the Additive or Mulplicative expression
  58     ToPrimitive is a string.
  59
  60     Author:             christine@netscape.com
  61     Date:               12 november 1997
  62 */
  63     var SECTION = "11.6.1-2";
  64     var VERSION = "ECMA_1";
  65     startTest();
  66
  67     var testcases = getTestCases();
  68
  69     writeHeaderToLog( SECTION + " The Addition operator ( + )");
  70     test();
  71
  72 function test() {
  73     for ( tc=0; tc < testcases.length; tc++ ) {
  74         testcases[tc].passed = writeTestCaseResult(
  75                             testcases[tc].expect,
  76                             testcases[tc].actual,
  77                             testcases[tc].description +" = "+
  78                             testcases[tc].actual );
  79
  80         testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
  81     }
  82     stopTest();
  83     return ( testcases );
  84 }
  85 function getTestCases() {
  86     var array = new Array();
  87     var item = 0;
  88
  89     // tests for boolean primitive, boolean object, Object object, a "MyObject" whose value is
  90     // a boolean primitive and a boolean object, and "MyValuelessObject", where the value is
  91     // set in the object's prototype, not the object itself.
  92
  93     array[item++] = new TestCase(   SECTION,
  94                                     "var EXP_1 = 'string'; var EXP_2 = false; EXP_1 + EXP_2",
  95                                     "stringfalse",
  96                                     eval("var EXP_1 = 'string'; var EXP_2 = false; EXP_1 + EXP_2") );
  97
  98     array[item++] = new TestCase(   SECTION,
  99                                     "var EXP_1 = true; var EXP_2 = 'string'; EXP_1 + EXP_2",
 100                                     "truestring",
 101                                     eval("var EXP_1 = true; var EXP_2 = 'string'; EXP_1 + EXP_2") );
 102
 103     array[item++] = new TestCase(   SECTION,
 104                                     "var EXP_1 = new Boolean(true); var EXP_2 = new String('string'); EXP_1 + EXP_2",
 105                                     "truestring",
 106                                     eval("var EXP_1 = new Boolean(true); var EXP_2 = new String('string'); EXP_1 + EXP_2") );
 107
 108     array[item++] = new TestCase(   SECTION,
 109                                     "var EXP_1 = new Object(true); var EXP_2 = new Object('string'); EXP_1 + EXP_2",
 110                                     "truestring",
 111                                     eval("var EXP_1 = new Object(true); var EXP_2 = new Object('string'); EXP_1 + EXP_2") );
 112
 113     array[item++] = new TestCase(   SECTION,
 114                                     "var EXP_1 = new Object(new String('string')); var EXP_2 = new Object(new Boolean(false)); EXP_1 + EXP_2",
 115                                     "stringfalse",
 116                                     eval("var EXP_1 = new Object(new String('string')); var EXP_2 = new Object(new Boolean(false)); EXP_1 + EXP_2") );
 117
 118     array[item++] = new TestCase(   SECTION,
 119                                     "var EXP_1 = new MyObject(true); var EXP_2 = new MyObject('string'); EXP_1 + EXP_2",
 120                                     "truestring",
 121                                     eval("var EXP_1 = new MyObject(true); var EXP_2 = new MyObject('string'); EXP_1 + EXP_2") );
 122
 123     array[item++] = new TestCase(   SECTION,
 124                                     "var EXP_1 = new MyObject(new String('string')); var EXP_2 = new MyObject(new Boolean(false)); EXP_1 + EXP_2",
 125                                     "[object Object][object Object]",
 126                                     eval("var EXP_1 = new MyObject(new String('string')); var EXP_2 = new MyObject(new Boolean(false)); EXP_1 + EXP_2") );
 127
 128     array[item++] = new TestCase(   SECTION,
 129                                     "var EXP_1 = new MyValuelessObject('string'); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2",
 130                                     "stringfalse",
 131                                     eval("var EXP_1 = new MyValuelessObject('string'); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2") );
 132
 133     array[item++] = new TestCase(   SECTION,
 134                                     "var EXP_1 = new MyValuelessObject(new String('string')); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2",
 135                                     "stringfalse",
 136                                     eval("var EXP_1 = new MyValuelessObject(new String('string')); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2") );
 137
 138     // tests for number primitive, number object, Object object, a "MyObject" whose value is
 139     // a number primitive and a number object, and "MyValuelessObject", where the value is
 140     // set in the object's prototype, not the object itself.
 141
 142     array[item++] = new TestCase(   SECTION,
 143                                     "var EXP_1 = 100; var EXP_2 = 'string'; EXP_1 + EXP_2",
 144                                     "100string",
 145                                     eval("var EXP_1 = 100; var EXP_2 = 'string'; EXP_1 + EXP_2") );
 146
 147     array[item++] = new TestCase(   SECTION,
 148                                     "var EXP_1 = new String('string'); var EXP_2 = new Number(-1); EXP_1 + EXP_2",
 149                                     "string-1",
 150                                     eval("var EXP_1 = new String('string'); var EXP_2 = new Number(-1); EXP_1 + EXP_2") );
 151
 152     array[item++] = new TestCase(   SECTION,
 153                                     "var EXP_1 = new Object(100); var EXP_2 = new Object('string'); EXP_1 + EXP_2",
 154                                     "100string",
 155                                     eval("var EXP_1 = new Object(100); var EXP_2 = new Object('string'); EXP_1 + EXP_2") );
 156
 157     array[item++] = new TestCase(   SECTION,
 158                                     "var EXP_1 = new Object(new String('string')); var EXP_2 = new Object(new Number(-1)); EXP_1 + EXP_2",
 159                                     "string-1",
 160                                     eval("var EXP_1 = new Object(new String('string')); var EXP_2 = new Object(new Number(-1)); EXP_1 + EXP_2") );
 161
 162     array[item++] = new TestCase(   SECTION,
 163                                     "var EXP_1 = new MyObject(100); var EXP_2 = new MyObject('string'); EXP_1 + EXP_2",
 164                                     "100string",
 165                                     eval("var EXP_1 = new MyObject(100); var EXP_2 = new MyObject('string'); EXP_1 + EXP_2") );
 166
 167     array[item++] = new TestCase(   SECTION,
 168                                     "var EXP_1 = new MyObject(new String('string')); var EXP_2 = new MyObject(new Number(-1)); EXP_1 + EXP_2",
 169                                     "[object Object][object Object]",
 170                                     eval("var EXP_1 = new MyObject(new String('string')); var EXP_2 = new MyObject(new Number(-1)); EXP_1 + EXP_2") );
 171
 172     array[item++] = new TestCase(   SECTION,
 173                                     "var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject('string'); EXP_1 + EXP_2",
 174                                     "100string",
 175                                     eval("var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject('string'); EXP_1 + EXP_2") );
 176
 177     array[item++] = new TestCase(   SECTION,
 178                                     "var EXP_1 = new MyValuelessObject(new String('string')); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2",
 179                                     "string-1",
 180                                     eval("var EXP_1 = new MyValuelessObject(new String('string')); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2") );
 181     return ( array );
 182 }
 183 function MyProtoValuelessObject() {
 184     this.valueOf = new Function ( "" );
 185     this.__proto__ = null;
 186 }
 187 function MyProtolessObject( value ) {
 188     this.valueOf = new Function( "return this.value" );
 189     this.__proto__ = null;
 190     this.value = value;
 191 }
 192 function MyValuelessObject(value) {
 193     this.__proto__ = new MyPrototypeObject(value);
 194 }
 195 function MyPrototypeObject(value) {
 196     this.valueOf = new Function( "return this.value;" );
 197     this.toString = new Function( "return (this.value + '');" );
 198     this.value = value;
 199 }
 200 function MyObject( value ) {
 201     this.valueOf = new Function( "return this.value" );
 202     this.value = value;
 203 }