def test_clear_garbage(self):
session = Session()
with session.begin():
idea = Idea(content='', reference_count=0)
session.add(idea)
count = session.query(Idea).filter_by(reference_count=0).count()
assert count > 0
rv = self.post('clear_garbage')
assert rv.status_code == HTTP_REDIRECT
session = Session()
count = session.query(Idea).filter_by(reference_count=0).count()
assert count == 0
