def test_query(records):
person = Person.find_by(name='jjy')
assert sorted(list(person.pets), key=lambda p: p.name) == sorted(list(Pet.where(person_id=person.id)),
key=lambda p: p.name)
assert person.pets.count() == 2
def test_find_by(persons):
p = Person.where(name='jjy').first()
assert p == Person.find_by(age=p.age)
with pytest.raises(RecordNotFound):
Person.find_by(name='A girl has no name')