testing whole output + pep8

Author: realead

pandas/tests/series/test_repr.py

@@ -258,15 +258,18 @@ def test_float_repr(self):
         expected = "0    1.0\ndtype: object"
         assert repr(ser) == expected
 
-
     def test_different_null_objects(self):
         # GH#45263
-        ser = pd.Series([1,2,3,4], [True, None, np.nan, pd.NaT])
+        ser = pd.Series([1, 2, 3, 4], [True, None, np.nan, pd.NaT])
         result = repr(ser)
-        assert "NaT" in result
-        assert "nan" in result
-        assert "None" in result
-
+        expected = (
+            "True    1\n"
+            "None    2\n"
+            "nan     3\n"
+            "NaT     4\n"
+            "dtype: int64"
+        )
+        assert result == expected
 
 
 class TestCategoricalRepr: