tests: sqlite memory db when run in testing

src/config.py

@@ -48,6 +48,9 @@ _QUOTED_DATABASE_PASSWORD = parse.quote_plus(str(_DATABASE_CREDENTIAL_PASSWORD))
 
 SQLALCHEMY_DATABASE_URI = SecretStr(f"postgresql+psycopg://{_DATABASE_CREDENTIAL_USER}:{_QUOTED_DATABASE_PASSWORD}@{DATABASE_HOSTNAME}:{DATABASE_PORT}/{DATABASE_NAME}")
 
+if settings.ENVIRONMENT == Environment.TESTING:
+    SQLALCHEMY_DATABASE_URI = SecretStr("sqlite:///:memory:")
+
 app_configs: dict[str, Any] = {"title": "App API"}
 if settings.ENVIRONMENT.is_deployed:
     app_configs["root_path"] = f"/v{settings.APP_VERSION}"

src/database.py

@@ -7,13 +7,19 @@ Exports:
 """
 from typing import Annotated
 from sqlalchemy import create_engine
-from sqlalchemy.orm import declarative_base, sessionmaker, Session
+from sqlalchemy.orm import DeclarativeBase, sessionmaker, Session
 
 from fastapi import Depends
 
-from src.config import SQLALCHEMY_DATABASE_URI
+from src.constants import Environment
+from src.config import SQLALCHEMY_DATABASE_URI, settings as global_settings
 
-engine = create_engine(SQLALCHEMY_DATABASE_URI.get_secret_value())
+if global_settings.ENVIRONMENT == Environment.TESTING:
+	connect_args = {"check_same_thread": False}
+else:
+	connect_args = {}
+
+engine = create_engine(SQLALCHEMY_DATABASE_URI.get_secret_value(), connect_args=connect_args)
 
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 
@@ -30,4 +36,5 @@ def get_db():
 
 
 db_dependency = Annotated[Session, Depends(get_db)]
-Base = declarative_base()
+class Base(DeclarativeBase):
+	pass