Initial release: async repository layer over SQLModel

tests/test_container.py

@@ -0,0 +1,48 @@
+from sqlalchemy.ext.asyncio import AsyncEngine
+
+from metaorm import RepositoriesContainer
+from tests.models import UserRepository
+
+
+class TestRepositoriesContainer:
+    async def test_engine_property_returns_async_engine(
+        self,
+        repositories_container: RepositoriesContainer,
+    ) -> None:
+        assert isinstance(repositories_container.engine, AsyncEngine)
+
+    async def test_session_is_none_without_transaction(
+        self,
+        repositories_container: RepositoriesContainer,
+    ) -> None:
+        assert repositories_container.session is None
+
+    async def test_transaction_creates_session(
+        self,
+        repositories_container: RepositoriesContainer,
+    ) -> None:
+        assert repositories_container.session is None
+
+        async with repositories_container.transaction() as session:
+            assert session is not None
+            assert repositories_container.session is session
+
+        assert repositories_container.session is None
+
+    async def test_nested_transaction_yields_same_session(
+        self,
+        repositories_container: RepositoriesContainer,
+    ) -> None:
+        async with (
+            repositories_container.transaction() as outer_session,
+            repositories_container.transaction() as inner_session,
+        ):
+            assert inner_session is outer_session
+
+    async def test_get_repository_returns_repository_instance(
+        self,
+        repositories_container: RepositoriesContainer,
+    ) -> None:
+        repository = repositories_container.get_repository(UserRepository)
+
+        assert isinstance(repository, UserRepository)