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14 * The Original Code is JavaScript Engine testing utilities.
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20 * Contributor(s): bzbarsky@mit.edu, pschwartau@netscape.com
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38 * SUMMARY: Testing left-associativity of the + operator
40 * See ECMA-262 Ed.3, Section 11.6.1, "The Addition operator"
41 * See http://bugzilla.mozilla.org/show_bug.cgi?id=196290
43 * The upshot: |a + b + c| should always equal |(a + b) + c|
46 //-----------------------------------------------------------------------------
49 var summary = 'Testing left-associativity of the + operator';
53 var actualvalues = [];
55 var expectedvalues = [];
58 status = inSection(1);
59 actual = 1 + 1 + 'px';
63 status = inSection(2);
64 actual = 'px' + 1 + 1;
68 status = inSection(3);
69 actual = 1 + 1 + 1 + 'px';
73 status = inSection(4);
74 actual = 1 + 1 + 'a' + 1 + 1 + 'b';
79 * The next sections test the + operator via eval()
81 status = inSection(5);
82 actual = sumThese(1, 1, 'a', 1, 1, 'b');
86 status = inSection(6);
87 actual = sumThese(new Number(1), new Number(1), 'a');
91 status = inSection(7);
92 actual = sumThese('a', new Number(1), new Number(1));
98 //-----------------------------------------------------------------------------
100 //-----------------------------------------------------------------------------
106 statusitems[UBound] = status;
107 actualvalues[UBound] = actual;
108 expectedvalues[UBound] = expect;
113 * Applies the + operator to the provided arguments via eval().
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
120 * arg1 + quoteThis(arg2) + arg3
122 * If we didn't put double-quotes around the string argument,
123 * we'd get this for an eval string:
127 * If we eval() this, we get 'ReferenceError: a is not defined'.
128 * With proper quoting, we get eval('11 + "a" + 22') as desired.
136 var L = arguments.length;
140 if (typeof arg === 'string')
141 arg = quoteThis(arg);
144 sEval += arg + ' + ';
153 function quoteThis(x)
155 return '"' + x + '"';
163 printStatus(summary);
165 for (var i=0; i<UBound; i++)
167 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);