removed some redundancy in the test case

Author: SaturnFromTitan

pandas/tests/indexing/test_na_indexing.py

@@ -1,3 +1,5 @@
+from contextlib import nullcontext as do_not_raise
+
 import pytest
 
 import pandas as pd
@@ -52,10 +54,11 @@ def test_series_mask_boolean(values, dtype, mask, indexer_class, frame):
 
     if indexer_class is pd.Series:
         msg = "iLocation based boolean indexing cannot use an indexable as a mask"
-        with pytest.raises(ValueError, match=msg):
-            result = obj.iloc[mask]
-            tm.assert_equal(result, expected)
+        expectation = pytest.raises(ValueError, match=msg)
     else:
+        expectation = do_not_raise()
+
+    with expectation:
         result = obj.iloc[mask]
         tm.assert_equal(result, expected)