working db and tests Nr2

database/database.py

@@ -0,0 +1,20 @@
+from sqlalchemy import create_engine, MetaData
+from sqlalchemy.orm import scoped_session, sessionmaker
+from sqlalchemy.ext.declarative import declarative_base
+
+engine = create_engine('sqlite:////tmp/test.db', convert_unicode=True)
+db_session = scoped_session(sessionmaker(autocommit=False,
+                                         autoflush=False,
+                                         bind=engine))
+Base = declarative_base()
+Base.query = db_session.query_property()
+metadata = MetaData()
+
+
+def init_db():
+    # import all modules here that might define models so that
+    # they will be registered properly on the metadata.  Otherwise
+    # you will have to import them first before calling init_db()
+    import app.models.user
+    import app.models.lock
+    metadata.create_all(bind=engine)