def test_init(self, alchemy_db):
backend = SQLAlchemyFilterBackend(alchemy_db.query(Place),
context={"context": "here"})
assert backend.model is Place
assert backend.context == {"context": "here"}
with pytest.raises(AssertionError):
SQLAlchemyFilterBackend(alchemy_db.query(Place, Restaurant))
def test_filter_no_specs(self, alchemy_db):
qs = alchemy_db.query(Place)
backend = SQLAlchemyFilterBackend(qs)
backend.bind([])
assert backend.filter() is qs
def test_empty(self, alchemy_db):
backend = SQLAlchemyFilterBackend(
alchemy_db.query(Place),
context={'context': 'here'},
)
assert 'WHERE 0 = 1' in six.text_type(backend.empty())
def _test_build_clause(self,
alchemy_db,
name,
lookup,
value,
expected,
is_negated=False):
backend = SQLAlchemyFilterBackend(alchemy_db.query(Place), )
clause, to_join = backend.build_clause(
FilterSpec(['restaurant', 'waiter_set', name], lookup, value,
is_negated))
assert to_join == [Place.restaurant, Restaurant.waiter_set]
assert_alchemy_expressions_equal(clause, expected)
def test_filter_already_eagerloaded(self, alchemy_db):
backend = SQLAlchemyFilterBackend(
alchemy_db.query(Place).options(
joinedload(Place.restaurant).joinedload(
Restaurant.waiter_set)), )
backend.bind([
FilterSpec(['restaurant', 'waiter_set', 'name'], 'exact', 'John',
False),
])
filtered = backend.filter()
sql = six.text_type(filtered)
assert 'place JOIN one_to_one' not in sql
assert 'place LEFT OUTER JOIN one_to_one' in sql
def test_filter(self, alchemy_db):
backend = SQLAlchemyFilterBackend(alchemy_db.query(Place))
backend.bind([
FilterSpec(["restaurant", "waiter_set", "name"], "exact", "John",
False)
])
filtered = backend.filter()
sql = six.text_type(filtered)
# eagerloads via outerjoin
assert "LEFT OUTER JOIN one_to_one_restaurant" not in sql
assert "LEFT OUTER JOIN one_to_one_waiter" not in sql
# for filtering via inner join
assert "JOIN one_to_one_restaurant" in sql
assert "JOIN one_to_one_waiter" in sql
def test_filter(self, alchemy_db):
backend = SQLAlchemyFilterBackend(alchemy_db.query(Place), )
backend.bind([
FilterSpec(['restaurant', 'waiter_set', 'name'], 'exact', 'John',
False),
])
filtered = backend.filter()
assert six.text_type(filtered) == (
'SELECT one_to_one_place.id AS one_to_one_place_id, '
'one_to_one_place.name AS one_to_one_place_name, '
'one_to_one_place.address AS one_to_one_place_address \n'
'FROM one_to_one_place '
'JOIN one_to_one_restaurant '
'ON one_to_one_restaurant.place_id = one_to_one_place.id '
'JOIN one_to_one_waiter '
'ON one_to_one_waiter.restaurant_id = one_to_one_restaurant.place_id '
'\nWHERE one_to_one_waiter.name = :name_1')
def test_get_model(self, alchemy_db):
backend = SQLAlchemyFilterBackend(alchemy_db.query(Place))
assert backend.get_model() is Place
def test_empty(self, alchemy_db):
backend = SQLAlchemyFilterBackend(alchemy_db.query(Place),
context={"context": "here"})
assert "WHERE 0 = 1" in six.text_type(backend.empty())
