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
72function 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}
85function 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}
183function MyProtoValuelessObject() {
184    this.valueOf = new Function ( "" );
185    this.__proto__ = null;
186}
187function MyProtolessObject( value ) {
188    this.valueOf = new Function( "return this.value" );
189    this.__proto__ = null;
190    this.value = value;
191}
192function MyValuelessObject(value) {
193    this.__proto__ = new MyPrototypeObject(value);
194}
195function MyPrototypeObject(value) {
196    this.valueOf = new Function( "return this.value;" );
197    this.toString = new Function( "return (this.value + '');" );
198    this.value = value;
199}
200function MyObject( value ) {
201    this.valueOf = new Function( "return this.value" );
202    this.value = value;
203}
204