diff --git a/tests/replication/slave/storage/_base.py b/tests/replication/slave/storage/_base.py
index 524af4f8d1..1f72a2a04f 100644
--- a/tests/replication/slave/storage/_base.py
+++ b/tests/replication/slave/storage/_base.py
@@ -56,7 +56,9 @@ class BaseSlavedStoreTestCase(unittest.HomeserverTestCase):
client = client_factory.buildProtocol(None)
client.makeConnection(FakeTransport(server, reactor))
- server.makeConnection(FakeTransport(client, reactor))
+
+ self.server_to_client_transport = FakeTransport(client, reactor)
+ server.makeConnection(self.server_to_client_transport)
def replicate(self):
"""Tell the master side of replication that something has happened, and then
@@ -69,6 +71,24 @@ class BaseSlavedStoreTestCase(unittest.HomeserverTestCase):
master_result = self.get_success(getattr(self.master_store, method)(*args))
slaved_result = self.get_success(getattr(self.slaved_store, method)(*args))
if expected_result is not None:
- self.assertEqual(master_result, expected_result)
- self.assertEqual(slaved_result, expected_result)
- self.assertEqual(master_result, slaved_result)
+ self.assertEqual(
+ master_result,
+ expected_result,
+ "Expected master result to be %r but was %r" % (
+ expected_result, master_result
+ ),
+ )
+ self.assertEqual(
+ slaved_result,
+ expected_result,
+ "Expected slave result to be %r but was %r" % (
+ expected_result, slaved_result
+ ),
+ )
+ self.assertEqual(
+ master_result,
+ slaved_result,
+ "Slave result %r does not match master result %r" % (
+ slaved_result, master_result
+ ),
+ )
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