def test_regex_helper():
from moler.cmd import RegexHelper
regex_helper = RegexHelper()
assert regex_helper is not None
match = regex_helper.match(r"\d+(\D+)\d+", "111ABC222")
assert match is not None
assert match == regex_helper.get_match()
assert regex_helper.group(1) == "ABC"
def test_group_without_match_object():
from moler.cmd import RegexHelper
regex_helper = RegexHelper()
with pytest.raises(WrongUsage) as exc:
regex_helper.group(1)
assert "Nothing was matched before calling" in str(exc)