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-rw-r--r--tests/storage/test_database.py16
1 files changed, 0 insertions, 16 deletions
diff --git a/tests/storage/test_database.py b/tests/storage/test_database.py
index 6fbac0ab14..8597867563 100644
--- a/tests/storage/test_database.py
+++ b/tests/storage/test_database.py
@@ -13,26 +13,10 @@
 # limitations under the License.
 
 from synapse.storage.database import make_tuple_comparison_clause
-from synapse.storage.engines import BaseDatabaseEngine
 
 from tests import unittest
 
 
-def _stub_db_engine(**kwargs) -> BaseDatabaseEngine:
-    # returns a DatabaseEngine, circumventing the abc mechanism
-    # any kwargs are set as attributes on the class before instantiating it
-    t = type(
-        "TestBaseDatabaseEngine",
-        (BaseDatabaseEngine,),
-        dict(BaseDatabaseEngine.__dict__),
-    )
-    # defeat the abc mechanism
-    t.__abstractmethods__ = set()
-    for k, v in kwargs.items():
-        setattr(t, k, v)
-    return t(None, None)
-
-
 class TupleComparisonClauseTestCase(unittest.TestCase):
     def test_native_tuple_comparison(self):
         clause, args = make_tuple_comparison_clause([("a", 1), ("b", 2)])