tests/mozilla/ecma_3/Expressions/11.6.1-1.js

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  12 * License.
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  14 * The Original Code is JavaScript Engine testing utilities.
  15 *
  16 * The Initial Developer of the Original Code is Netscape Communications Corp.
  17 * Portions created by the Initial Developer are Copyright (C) 2003
  18 * the Initial Developer. All Rights Reserved.
  19 *
  20 * Contributor(s): bzbarsky@mit.edu, pschwartau@netscape.com
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  35 *
  36 *
  37 * Date:    14 Mar 2003
  38 * SUMMARY: Testing left-associativity of the + operator
  39 *
  40 * See ECMA-262 Ed.3, Section 11.6.1, "The Addition operator"
  41 * See http://bugzilla.mozilla.org/show_bug.cgi?id=196290
  42 *
  43 * The upshot: |a + b + c| should always equal |(a + b) + c|
  44 *
  45 */
  46 //-----------------------------------------------------------------------------
  47 var UBound = 0;
  48 var bug = 196290;
  49 var summary = 'Testing left-associativity of the + operator';
  50 var status = '';
  51 var statusitems = [];
  52 var actual = '';
  53 var actualvalues = [];
  54 var expect= '';
  55 var expectedvalues = [];
  56
  57
  58 status = inSection(1);
  59 actual = 1 + 1 + 'px';
  60 expect = '2px';
  61 addThis();
  62
  63 status = inSection(2);
  64 actual = 'px' + 1 + 1;
  65 expect = 'px11';
  66 addThis();
  67
  68 status = inSection(3);
  69 actual = 1 + 1 + 1 + 'px';
  70 expect = '3px';
  71 addThis();
  72
  73 status = inSection(4);
  74 actual = 1 + 1 + 'a' + 1 + 1 + 'b';
  75 expect = '2a11b';
  76 addThis();
  77
  78 /*
  79  * The next sections test the + operator via eval()
  80  */
  81 status = inSection(5);
  82 actual = sumThese(1, 1, 'a', 1, 1, 'b');
  83 expect = '2a11b';
  84 addThis();
  85
  86 status = inSection(6);
  87 actual = sumThese(new Number(1), new Number(1), 'a');
  88 expect = '2a';
  89 addThis();
  90
  91 status = inSection(7);
  92 actual = sumThese('a', new Number(1), new Number(1));
  93 expect = 'a11';
  94 addThis();
  95
  96
  97
  98 //-----------------------------------------------------------------------------
  99 test();
 100 //-----------------------------------------------------------------------------
 101
 102
 103
 104 function addThis()
 105 {
 106   statusitems[UBound] = status;
 107   actualvalues[UBound] = actual;
 108   expectedvalues[UBound] = expect;
 109   UBound++;
 110 }
 111
 112 /*
 113  * Applies the + operator to the provided arguments via eval().
 114  *
 115  * Form an eval string of the form 'arg1 + arg2 + arg3', but
 116  * remember to add double-quotes inside the eval string around
 117  * any argument that is of string type. For example, suppose the
 118  * arguments were 11, 'a', 22. Then the eval string should be
 119  *
 120  *              arg1 + quoteThis(arg2) + arg3
 121  *
 122  * If we didn't put double-quotes around the string argument,
 123  * we'd get this for an eval string:
 124  *
 125  *                     '11 + a + 22'
 126  *
 127  * If we eval() this, we get 'ReferenceError: a is not defined'.
 128  * With proper quoting, we get eval('11 + "a" + 22') as desired.
 129  */
 130 function sumThese()
 131 {
 132   var sEval = '';
 133   var arg;
 134   var i;
 135
 136   var L = arguments.length;
 137   for (i=0; i<L; i++)
 138   {
 139     arg = arguments[i];
 140     if (typeof arg === 'string')
 141       arg = quoteThis(arg);
 142
 143     if (i < L-1)
 144       sEval += arg + ' + ';
 145     else
 146       sEval += arg;
 147   }
 148
 149   return eval(sEval);
 150 }
 151
 152
 153 function quoteThis(x)
 154 {
 155   return '"' + x + '"';
 156 }
 157
 158
 159 function test()
 160 {
 161   enterFunc('test');
 162   printBugNumber(bug);
 163   printStatus(summary);
 164
 165   for (var i=0; i<UBound; i++)
 166   {
 167     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
 168   }
 169
 170   exitFunc ('test');
 171 }