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42 * SUMMARY: Testing |with (x) {function f() {}}| when |x.f| already exists
43 * See http://bugzilla.mozilla.org/show_bug.cgi?id=185485
45 * The idea is this: if |x| does not already have a property named |f|,
46 * a |with| statement cannot be used to define one. See, for example,
48 * http://bugzilla.mozilla.org/show_bug.cgi?id=159849#c11
49 * http://bugzilla.mozilla.org/show_bug.cgi?id=184107
52 * However, if |x| already has a property |f|, a |with| statement can be
53 * used to modify the value it contains:
57 * This should work even if we use a |var| statement, like this:
59 * with (x) {var f = 1;}
61 * However, it should NOT work if we use a |function| statement, like this:
63 * with (x) {function f() {}}
65 * Instead, this should newly define a function f in global scope.
66 * See http://bugzilla.mozilla.org/show_bug.cgi?id=185485
69 //-----------------------------------------------------------------------------
71 var BUGNUMBER = 185485;
72 var summary = 'Testing |with (x) {function f() {}}| when |x.f| already exists';
76 var actualvalues = [];
78 var expectedvalues = [];
86 status = inSection(1);
95 status = inSection(2);
101 * Use of a function statement under the with-block should not affect
102 * the local property |f|, but define a function |f| in global scope -
108 status = inSection(3);
113 status = inSection(4);
114 actual = typeof this.f;
120 * Compare use of function expression instead of function statement.
121 * Note it is important that |x.g| already exists. Otherwise, this
122 * would newly define |g| in global scope -
126 var g = function() {}
128 status = inSection(5);
129 actual = x.g.toString();
130 expect = (function () {}).toString();
135 //-----------------------------------------------------------------------------
137 //-----------------------------------------------------------------------------
143 statusitems[UBound] = status;
144 actualvalues[UBound] = actual;
145 expectedvalues[UBound] = expect;
153 printBugNumber(BUGNUMBER);
154 printStatus(summary);
156 for (var i=0; i<UBound; i++)
158 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);