def test_char_class(self):
pattern = "[1-9]+"
regex = RE.MiniRegex(pattern)
search_str = "123abc456def0"
matches = regex.find_all_matches(search_str)
result = [match.get_span() for match in matches]
self.assertListEqual(result, [(0, 2), (6, 8)])
def test_matches_occuring_later(self):
pattern = "abc|bcde"
regex = RE.MiniRegex(pattern)
search_str = "kbcde"
matches = regex.find_all_matches(search_str)
result = [match.get_span() for match in matches]
self.assertListEqual(result, [(1, 4)])
def test_overlapping_matches(self):
pattern = "abc|bcde"
regex = RE.MiniRegex(pattern)
search_str = "abcde"
matches = regex.find_all_matches(search_str)
result = [match.get_span() for match in matches]
self.assertListEqual(result, [(0, 2)])
def test_is_greedy(self):
pattern = "a|ab"
regex = RE.MiniRegex(pattern)
search_str = "ab"
matches = regex.find_all_matches(search_str)
result = [match.get_span() for match in matches]
self.assertListEqual(result, [(0, 1)])
def test_single_match(self):
pattern = ".el+o"
regex = RE.MiniRegex(pattern)
search_str = "Hello World!"
matches = regex.find_all_matches(search_str)
result = [match.get_span() for match in matches]
self.assertListEqual(result, [(0, 4)])
search_str = "Yelllloooooooee"
matches = regex.find_all_matches(search_str)
result = [match.get_span() for match in matches]
self.assertListEqual(result, [(0, 6)])
search_str = "Not a match"
matches = regex.find_all_matches(search_str)
result = [match.get_span() for match in matches]
self.assertListEqual(result, [])
def test_single_char_match(self):
pattern = "a"
regex = RE.MiniRegex(pattern)
search_str = "a"
match = regex.find_match_at(search_str)
self.assertEqual(match.get_span(), (0, 0))