def test_necessary_x_flag_2(self):
r = Regex.get_parse_tree(r"(?x)foo#comment")
errs = []
check_bad_flags(r, errs)
print(errs)
self.assertEqual(len(errs), 0)
def test_necessary_i_flag2(self):
r = Regex.get_parse_tree(r"(?m).$")
errs = []
check_bad_flags(r, errs)
print(errs)
self.assertEqual(len(errs), 0)
def test_unnecessary_x_flag(self):
r = Regex.get_parse_tree(r"(?x)foo[ ]")
errs = []
check_bad_flags(r, errs)
print(errs)
self.assertEqual(len(errs), 1)
def test_necessary_i_flag_in_alternation3(self):
r = Regex.get_parse_tree(r"(?i)[\x00-\x67]")
errs = []
check_bad_flags(r, errs)
print(errs)
self.assertEqual(len(errs), 0)