tests/mozilla/ecma/Expressions/11.6.1-1.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:          11.6.1-1.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 not cover cases where the Additive or Mulplicative expression
  58     ToPrimitive is string.
  59
  60     Author:             christine@netscape.com
  61     Date:               12 november 1997
  62 */
  63     var SECTION = "11.6.1-1";
  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
  86 function getTestCases() {
  87     var array = new Array();
  88     var item = 0;
  89
  90     // tests for boolean primitive, boolean object, Object object, a "MyObject" whose value is
  91     // a boolean primitive and a boolean object, and "MyValuelessObject", where the value is
  92     // set in the object's prototype, not the object itself.
  93
  94     array[item++] = new TestCase(   SECTION,
  95                                     "var EXP_1 = true; var EXP_2 = false; EXP_1 + EXP_2",
  96                                     1,
  97                                     eval("var EXP_1 = true; var EXP_2 = false; EXP_1 + EXP_2") );
  98
  99     array[item++] = new TestCase(   SECTION,
 100                                     "var EXP_1 = new Boolean(true); var EXP_2 = new Boolean(false); EXP_1 + EXP_2",
 101                                     1,
 102                                     eval("var EXP_1 = new Boolean(true); var EXP_2 = new Boolean(false); EXP_1 + EXP_2") );
 103
 104     array[item++] = new TestCase(   SECTION,
 105                                     "var EXP_1 = new Object(true); var EXP_2 = new Object(false); EXP_1 + EXP_2",
 106                                     1,
 107                                     eval("var EXP_1 = new Object(true); var EXP_2 = new Object(false); EXP_1 + EXP_2") );
 108
 109     array[item++] = new TestCase(   SECTION,
 110                                     "var EXP_1 = new Object(new Boolean(true)); var EXP_2 = new Object(new Boolean(false)); EXP_1 + EXP_2",
 111                                     1,
 112                                     eval("var EXP_1 = new Object(new Boolean(true)); var EXP_2 = new Object(new Boolean(false)); EXP_1 + EXP_2") );
 113
 114     array[item++] = new TestCase(   SECTION,
 115                                     "var EXP_1 = new MyObject(true); var EXP_2 = new MyObject(false); EXP_1 + EXP_2",
 116                                     1,
 117                                     eval("var EXP_1 = new MyObject(true); var EXP_2 = new MyObject(false); EXP_1 + EXP_2") );
 118
 119     array[item++] = new TestCase(   SECTION,
 120                                     "var EXP_1 = new MyObject(new Boolean(true)); var EXP_2 = new MyObject(new Boolean(false)); EXP_1 + EXP_2",
 121                                     "[object Object][object Object]",
 122                                     eval("var EXP_1 = new MyObject(new Boolean(true)); var EXP_2 = new MyObject(new Boolean(false)); EXP_1 + EXP_2") );
 123
 124     array[item++] = new TestCase(   SECTION,
 125                                     "var EXP_1 = new MyValuelessObject(true); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2",
 126                                     1,
 127                                     eval("var EXP_1 = new MyValuelessObject(true); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2") );
 128
 129     array[item++] = new TestCase(   SECTION,
 130                                     "var EXP_1 = new MyValuelessObject(new Boolean(true)); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2",
 131                                     "truefalse",
 132                                     eval("var EXP_1 = new MyValuelessObject(new Boolean(true)); var EXP_2 = new MyValuelessObject(new Boolean(false)); EXP_1 + EXP_2") );
 133
 134     // tests for number primitive, number object, Object object, a "MyObject" whose value is
 135     // a number primitive and a number object, and "MyValuelessObject", where the value is
 136     // set in the object's prototype, not the object itself.
 137
 138     array[item++] = new TestCase(   SECTION,
 139                                     "var EXP_1 = 100; var EXP_2 = -1; EXP_1 + EXP_2",
 140                                     99,
 141                                     eval("var EXP_1 = 100; var EXP_2 = -1; EXP_1 + EXP_2") );
 142
 143     array[item++] = new TestCase(   SECTION,
 144                                     "var EXP_1 = new Number(100); var EXP_2 = new Number(-1); EXP_1 + EXP_2",
 145                                     99,
 146                                     eval("var EXP_1 = new Number(100); var EXP_2 = new Number(-1); EXP_1 + EXP_2") );
 147
 148     array[item++] = new TestCase(   SECTION,
 149                                     "var EXP_1 = new Object(100); var EXP_2 = new Object(-1); EXP_1 + EXP_2",
 150                                     99,
 151                                     eval("var EXP_1 = new Object(100); var EXP_2 = new Object(-1); EXP_1 + EXP_2") );
 152
 153     array[item++] = new TestCase(   SECTION,
 154                                     "var EXP_1 = new Object(new Number(100)); var EXP_2 = new Object(new Number(-1)); EXP_1 + EXP_2",
 155                                     99,
 156                                     eval("var EXP_1 = new Object(new Number(100)); var EXP_2 = new Object(new Number(-1)); EXP_1 + EXP_2") );
 157
 158     array[item++] = new TestCase(   SECTION,
 159                                     "var EXP_1 = new MyObject(100); var EXP_2 = new MyObject(-1); EXP_1 + EXP_2",
 160                                     99,
 161                                     eval("var EXP_1 = new MyObject(100); var EXP_2 = new MyObject(-1); EXP_1 + EXP_2") );
 162
 163     array[item++] = new TestCase(   SECTION,
 164                                     "var EXP_1 = new MyObject(new Number(100)); var EXP_2 = new MyObject(new Number(-1)); EXP_1 + EXP_2",
 165                                     "[object Object][object Object]",
 166                                     eval("var EXP_1 = new MyObject(new Number(100)); var EXP_2 = new MyObject(new Number(-1)); EXP_1 + EXP_2") );
 167
 168
 169     array[item++] = new TestCase(   SECTION,
 170                                     "var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject(-1); EXP_1 + EXP_2",
 171                                     99,
 172                                     eval("var EXP_1 = new MyValuelessObject(100); var EXP_2 = new MyValuelessObject(-1); EXP_1 + EXP_2") );
 173
 174     array[item++] = new TestCase(   SECTION,
 175                                     "var EXP_1 = new MyValuelessObject(new Number(100)); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2",
 176                                     "100-1",
 177                                     eval("var EXP_1 = new MyValuelessObject(new Number(100)); var EXP_2 = new MyValuelessObject(new Number(-1)); EXP_1 + EXP_2") );
 178
 179     array[item++] = new TestCase(   SECTION,
 180                                     "var EXP_1 = new MyValuelessObject( new MyValuelessObject( new Boolean(true) ) ); EXP_1 + EXP_1",
 181                                     "truetrue",
 182                                     eval("var EXP_1 = new MyValuelessObject( new MyValuelessObject( new Boolean(true) ) ); EXP_1 + EXP_1") );
 183
 184     return ( array );
 185 }
 186
 187
 188 function MyProtoValuelessObject() {
 189     this.valueOf = new Function ( "" );
 190     this.__proto__ = null;
 191 }
 192
 193 function MyProtolessObject( value ) {
 194     this.valueOf = new Function( "return this.value" );
 195     this.__proto__ = null;
 196     this.value = value;
 197 }
 198
 199 function MyValuelessObject(value) {
 200     this.__proto__ = new MyPrototypeObject(value);
 201 }
 202 function MyPrototypeObject(value) {
 203     this.valueOf = new Function( "return this.value;" );
 204     this.toString = new Function( "return (this.value + '');" );
 205     this.value = value;
 206 }
 207
 208 function MyObject( value ) {
 209     this.valueOf = new Function( "return this.value" );
 210     this.value = value;
 211 }