def test_accepts(self):
regex = Regex("a|b|c")
self.assertTrue(regex.accepts(["a"]))
self.assertFalse(regex.accepts(["a", "b"]))
def test_space(self):
regex = Regex("\\ ")
self.assertTrue(regex.accepts([" "]))
def test_escaped_parenthesis(self):
regex = Regex("\\(")
self.assertTrue(regex.accepts(["("]))
def test_escaped_mid_bar(self):
regex = Regex('a(0|1|2|3|4|5|6|7|8|9|a|b|c|d|e|f|g|h|i|j|k|l|m|n|o|p|q'
'|r|s|t|u|v|w|x|y|z|A|B|C|D|E|F|G|H|I|J|K|L|M|N|O|P|Q|R|'
'S|T|U|V|W|X|Y|Z|!|"|#|\\$|%|&|\'|\\(|\\)|\\*|\\+|,|-|'
'\\.|/|:|;|<|=|>|?|@|[|\\|]|^|_|`|{|\\||}|~|\\ | |)')
self.assertTrue(regex.accepts(["a", "|"]))
def test_after_union(self):
regex = Regex("(a|b) !")
self.assertTrue(regex.accepts(["a", "!"]))
def test_star_union(self):
regex = Regex("a*(b|c)")
self.assertTrue(regex.accepts(["a", "a", "c"]))
def test_regex_or_two_concat(self):
regex = Regex("c d (a|b)")
self.assertTrue(regex.accepts(["c", "d", "b"]))
def test_regex_two_or_concat_parenthesis2_concat(self):
regex = Regex("c (a|(b d)|e) !")
self.assertTrue(regex.accepts(["c", "a", "!"]))
self.assertTrue(regex.accepts(["c", "b", "d", "!"]))
self.assertTrue(regex.accepts(["c", "e", "!"]))
def test_regex_two_or_concat_parenthesis(self):
regex = Regex("c.(a|b)(d|e)")
self.assertTrue(regex.accepts(["c", "b", "e"]))
def test_regex_or(self):
regex = Regex("a|b")
self.assertTrue(regex.accepts(["a"]))
def test_parenthesis_gorilla(self):
regex = Regex("george touches (a|an) (sky|gorilla) !")
self.assertTrue(regex.accepts(["george", "touches", "a", "sky", "!"]))
