use tz_naive_fixture and fix top

Author: louispotok

pandas/tests/series/test_analytics.py

@@ -336,17 +336,15 @@ def test_describe(self):
                           index=['count', 'unique', 'top', 'freq'])
         tm.assert_series_equal(result, expected)
 
-    @pytest.mark.parametrize("tz, name", [
-        (None, "tz-naive"),
-        ("US/Eastern", "tz-aware")
-    ])
-    def test_describe_dt(self, tz, name):
+    def test_describe_with_tz(self, tz_naive_fixture):
+        tz = tz_naive_fixture
+        name = tz_naive_fixture
         start = Timestamp(2018, 1, 1)
         end = Timestamp(2018, 1, 5)
         s = Series(date_range(start, end, tz=tz), name=name)
         result = s.describe()
         expected = Series(
-            [5, 5, start.tz_localize(tz), 1, start.tz_localize(tz),
+            [5, 5, s.value_counts().index[0], 1, start.tz_localize(tz),
              end.tz_localize(tz)
              ],
             name=name,