isolating api methods, introducing first tests

src/db/database.py

@@ -1,10 +1,7 @@
 from sqlalchemy import create_engine
-from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy.orm import sessionmaker
-import os
+from sqlalchemy.orm import sessionmaker, declarative_base
+from core.config import SQLALCHEMY_DATABASE_URL
 
-SQLALCHEMY_DATABASE_URL = os.environ.get("DATABASE_PATH")#"sqlite:///./auto-archiver.db"
-# SQLALCHEMY_DATABASE_URL = "postgresql://user:password@postgresserver/db"
 
 engine = create_engine(
     SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
@@ -13,3 +10,8 @@ SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
 Base = declarative_base()
 
+
+def get_db():
+    session = SessionLocal()
+    try: yield session
+    finally: session.close()