regexp-string-methods.js revision a7e24c173cf37484693b9abb38e494fa7bd7baeb 
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27
28// Regexp shouldn't use String.prototype.slice()
29var s = new String("foo");
30assertEquals("f", s.slice(0,1));
31String.prototype.slice = function() { return "x"; }
32assertEquals("x", s.slice(0,1));
33assertEquals("g", /g/.exec("gg"));
34
35// Regexp shouldn't use String.prototype.charAt()
36var f1 = new RegExp("f", "i");
37assertEquals("F", f1.exec("F"));
38assertEquals("f", "foo".charAt(0));
39String.prototype.charAt = function(idx) { return 'g'; };
40assertEquals("g", "foo".charAt(0));
41var f2 = new RegExp("[g]", "i");
42assertEquals("G", f2.exec("G"));
43assertTrue(f2.ignoreCase);
44
45// On the other hand test is defined in a semi-coherent way as a call to exec.
46// 15.10.6.3
47// We match other browsers in using the original value of RegExp.prototype.exec.
48// I.e., RegExp.prototype.test shouldn't use the current value of
49// RegExp.prototype.exec.
50RegExp.prototype.exec = function(string) { return 'x'; }
51assertFalse(/f/.test('x'));
52