Fix postgres test

tests/replication/tcp/streams/test_events.py

@@ -79,8 +79,12 @@ def test_update_function_event_row_limit(self):
         self.reconnect()
         self.replicate()
 
-        # we should have received all the expected rows in the right order
-        received_rows = self.test_handler.received_rdata_rows
+        # we should have received all the expected rows in the right order (as
+        # well as various cache invalidation updates which we ignore)
+        received_rows = [
+            row for row in self.test_handler.received_rdata_rows if row[0] == "events"
+        ]
+
         for event in events:
             stream_name, token, row = received_rows.pop(0)
             self.assertEqual("events", stream_name)
@@ -183,7 +187,8 @@ def test_update_function_huge_state_change(self):
         self.reconnect()
         self.replicate()
 
-        # now we should have received all the expected rows in the right order.
+        # we should have received all the expected rows in the right order (as
+        # well as various cache invalidation updates which we ignore)
         #
         # we expect:
         #
@@ -192,7 +197,9 @@ def test_update_function_huge_state_change(self):
         #       of the states that got reverted.
         # - two rows for state2
 
-        received_rows = self.test_handler.received_rdata_rows
+        received_rows = [
+            row for row in self.test_handler.received_rdata_rows if row[0] == "events"
+        ]
 
         # first check the first two rows, which should be state1
 
@@ -333,9 +340,11 @@ def test_update_function_state_row_limit(self):
         self.reconnect()
         self.replicate()
 
-        # we should have received all the expected rows in the right order
-
-        received_rows = self.test_handler.received_rdata_rows
+        # we should have received all the expected rows in the right order (as
+        # well as various cache invalidation updates which we ignore)
+        received_rows = [
+            row for row in self.test_handler.received_rdata_rows if row[0] == "events"
+        ]
         self.assertGreaterEqual(len(received_rows), len(events))
         for i in range(NUM_USERS):
             # for each user, we expect the PL event row, followed by state rows for