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23
24description(
25"This page tests invalid character ranges in character classes."
26);
27
28// These test a basic range / non range.
29shouldBe('/[a-c]+/.exec("-acbd");', '["acb"]');
30shouldBe('/[a\\-c]+/.exec("-acbd")', '["-ac"]');
31
32// A reverse-range is invalid.
33shouldThrow('/[c-a]+/.exec("-acbd");');
34
35// A character-class in a range is invalid, according to ECMA-262, but we allow it.
36shouldBe('/[\\d-x]+/.exec("1-3xy");', '["1-3x"]');
37shouldBe('/[x-\\d]+/.exec("1-3xy");', '["1-3x"]');
38shouldBe('/[\\d-\\d]+/.exec("1-3xy");', '["1-3"]');
39
40// Whilst we break with ECMA-262's definition of CharacterRange, we do comply with
41// the grammar, and as such in the following regex a-z cannot be matched as a range.
42shouldBe('/[\\d-a-z]+/.exec("az1-3y");', '["az1-3"]');
43
44// An escaped hypen should not be confused for an invalid range.
45shouldBe('/[\\d\\-x]+/.exec("1-3xy");', '["1-3x"]');
46shouldBe('/[x\\-\\d]+/.exec("1-3xy");', '["1-3x"]');
47shouldBe('/[\\d\\-\\d]+/.exec("1-3xy");', '["1-3"]');
48
49// A hyphen after a character-class is not invalid.
50shouldBe('/[\\d-]+/.exec("1-3xy")', '["1-3"]');
51