TST: Fixturize series/test_dtypes.py (pandas-dev#22967)

pandas/tests/series/test_dtypes.py

@@ -24,10 +24,8 @@
 from pandas import compat
 import pandas.util.testing as tm
 
-from .common import TestData
 
-
-class TestSeriesDtypes(TestData):
+class TestSeriesDtypes():
 
     def test_dt64_series_astype_object(self):
         dt64ser = Series(date_range('20130101', periods=3))
@@ -56,17 +54,17 @@ def test_asobject_deprecated(self):
             o = s.asobject
         assert isinstance(o, np.ndarray)
 
-    def test_dtype(self):
+    def test_dtype(self, datetime_series):
 
-        assert self.ts.dtype == np.dtype('float64')
-        assert self.ts.dtypes == np.dtype('float64')
-        assert self.ts.ftype == 'float64:dense'
-        assert self.ts.ftypes == 'float64:dense'
-        tm.assert_series_equal(self.ts.get_dtype_counts(),
+        assert datetime_series.dtype == np.dtype('float64')
+        assert datetime_series.dtypes == np.dtype('float64')
+        assert datetime_series.ftype == 'float64:dense'
+        assert datetime_series.ftypes == 'float64:dense'
+        tm.assert_series_equal(datetime_series.get_dtype_counts(),
                                Series(1, ['float64']))
         # GH18243 - Assert .get_ftype_counts is deprecated
         with tm.assert_produces_warning(FutureWarning):
-            tm.assert_series_equal(self.ts.get_ftype_counts(),
+            tm.assert_series_equal(datetime_series.get_ftype_counts(),
                                    Series(1, ['float64:dense']))
 
     @pytest.mark.parametrize("value", [np.nan, np.inf])