updated CRUD tests, added type hinting.

groove/db/manager.py

@@ -1,43 +0,0 @@
-import os
-
-from sqlalchemy import create_engine
-from sqlalchemy.orm import sessionmaker
-
-from . import metadata
-
-
-class DatabaseManager:
-    """
-    A context manager for working with sqllite database.
-    """
-
-    def __init__(self):
-        self._engine = None
-        self._session = None
-
-    @property
-    def engine(self):
-        if not self._engine:
-            self._engine = create_engine(f"sqlite:///{os.environ.get('DATABASE_PATH')}", future=True)
-        return self._engine
-
-    @property
-    def session(self):
-        if not self._session:
-            Session = sessionmaker(bind=self.engine, future=True)
-            self._session = Session()
-        return self._session
-
-    def import_from_filesystem(self):
-        pass
-
-    def __enter__(self):
-        metadata.create_all(bind=self.engine)
-        return self
-
-    def __exit__(self, exc_type, exc_value, traceback):
-        if self.session:
-            self.session.close()
-
-
-database_manager = DatabaseManager