added assert (pandas-dev#55560)

* added assert

* review comment

Author: jayendra-patil33

pandas/tests/indexing/interval/test_interval_new.py

@@ -140,7 +140,7 @@ def test_loc_with_overlap(self, indexer_sl):
         # interval
         expected = 0
         result = indexer_sl(ser)[Interval(1, 5)]
-        result == expected
+        assert expected == result
 
         expected = ser
         result = indexer_sl(ser)[[Interval(1, 5), Interval(3, 7)]]