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23
24description(
25'Tests that regular expressions treat non-BMP characters as two separate characters. '
26+ 'From a Unicode correctness point of view this is wrong, but it is what other browsers do. '
27+ 'And given that we store strings as UTF-16, it is also more efficient to implement. '
28+ 'Also test some other cases related to UTF-8 and UTF-16.'
29);
30
31var surrogatePair = String.fromCharCode(0xD800) + String.fromCharCode(0xDC00);
32
33shouldBe('/./.exec(surrogatePair).toString().length', '1');
34shouldBe('/\\D/.exec(surrogatePair).toString().length', '1');
35shouldBe('/\\S/.exec(surrogatePair).toString().length', '1');
36shouldBe('/\\W/.exec(surrogatePair).toString().length', '1');
37shouldBe('/[^x]/.exec(surrogatePair).toString().length', '1');
38
39debug('');
40
41shouldBe('/.{1,2}/.exec("!!" + String.fromCharCode(0xA1)).toString().length', '2');
42shouldBe('/./.exec("")', 'null');
43
44debug('');
45