def test_extract_returns_empty_sting_if_no_match(self):
content = "Hello. This is a test."
regex = "I will not match nothin'"
result = helper.extract(content, regex)
assert result == ""
def test_extract_extracts(self):
content = "This is a test. I'm not a sk8er boi."
regex = "sk[1-9][aeoir]{2} [\w]*\.$"
result = helper.extract(content, regex)
assert result == "sk8er boi."
