def assert_text():
count = query.resolve_for(self)
if not (matches_count(count, query.options) and
(count > 0 or expects_none(query.options))):
raise ExpectationNotMet(query.failure_message)
return True
def assert_no_selector():
result = query.resolve_for(self)
if result.matches_count and (len(result) > 0
or expects_none(query.options)):
raise ExpectationNotMet(result.negative_failure_message)
return True
