add more tests for pg

tests/fixtures/db_connection.py

@@ -51,5 +51,6 @@ async def async_session_plain(async_engine):
 
 @async_fixture(scope="class")
 async def async_session(async_session_plain):
-    async with async_session_plain() as session:
+    async with async_session_plain() as session:  # type: AsyncSession
         yield session
+        await session.rollback()

tests/models.py

@@ -6,7 +6,7 @@
 from sqlalchemy.orm import declared_attr, relationship
 from sqlalchemy.types import CHAR, TypeDecorator
 
-from tests.common import sqla_uri
+from tests.common import is_postgres_tests, sqla_uri
 
 
 class Base:
@@ -271,9 +271,9 @@ def python_type(self):
 
 
 db_uri = sqla_uri()
-if "postgres" in db_uri:
+if is_postgres_tests():
     # noinspection PyPep8Naming
-    from sqlalchemy.dialects.postgresql import UUID as UUIDType
+    from sqlalchemy.dialects.postgresql.asyncpg import AsyncpgUUID as UUIDType
 elif "sqlite" in db_uri:
     UUIDType = CustomUUIDType
 else:
@@ -283,10 +283,10 @@ def python_type(self):
 
 class CustomUUIDItem(Base):
     __tablename__ = "custom_uuid_item"
-    id = Column(UUIDType, primary_key=True)
+    id = Column(UUIDType(as_uuid=True), primary_key=True)
 
     extra_id = Column(
-        UUIDType,
+        UUIDType(as_uuid=True),
         nullable=True,
         unique=True,
     )

tests/test_api/test_api_sqla_with_includes.py

@@ -2380,6 +2380,36 @@ async def test_join_by_relationships_does_not_duplicating_response_entities(
             "meta": {"count": 1, "totalPages": 1},
         }
 
+    async def test_sqla_filters_by_uuid_type(
+        self,
+        async_session: AsyncSession,
+    ):
+        """
+        This test checks if UUID fields allow filtering by UUID object
+
+        Make sure your UUID field allows native UUID filtering: `UUID(as_uuid=True)`
+
+        :param async_session:
+        :return:
+        """
+        new_id = uuid4()
+        extra_id = uuid4()
+        item = CustomUUIDItem(
+            id=new_id,
+            extra_id=extra_id,
+        )
+        async_session.add(item)
+        await async_session.commit()
+
+        # noinspection PyTypeChecker
+        stmt = select(CustomUUIDItem)
+        # works because we set `as_uuid=True`
+        i = await async_session.scalar(stmt.where(CustomUUIDItem.id == new_id))
+        assert i
+        # works because we set `as_uuid=True`
+        i = await async_session.scalar(stmt.where(CustomUUIDItem.extra_id == extra_id))
+        assert i
+
     @pytest.mark.parametrize("filter_kind", ["small", "full"])
     async def test_filter_by_field_of_uuid_type(
         self,