测试这样的代码的最佳方法是什么(下面的方法显然失败,而对象每次都在不同的块中创建):
def get_session(db_name, verbose, test):
"""Returns current DB session from SQLAlchemy pool.
>>> get_session('Mmusc20090126', False, True)
<sqlalchemy.orm.session.Session object at 0xfb5ff0>
"""
if test:
engine = create_engine('sqlite:///:memory:', echo=verbose)
log_load.debug('DB in RAM.')
else:
engine = create_engine('sqlite:///' + 'DB/' + db_name + '.db', echo=verbose)
log_load.debug('DB stored in file: %s' % 'DB/' + db_name + '.db')
# Create TABLES: Structures, Interactions, Interactors, PDB_UniProt, UniProtSeq
meta.create_all(engine)
Session = sessionmaker(bind=engine)
session = Session()
return session