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//opt/alt/python37/lib/python3.7/site-packages/alembic/testing/util.py
from sqlalchemy.util import decorator @decorator def provide_metadata(fn, *args, **kw): """Provide bound MetaData for a single test, dropping afterwards.""" from . import config from sqlalchemy import schema metadata = schema.MetaData(config.db) self = args[0] prev_meta = getattr(self, 'metadata', None) self.metadata = metadata try: return fn(*args, **kw) finally: metadata.drop_all() self.metadata = prev_meta
