Merge pull request #11632 from Moisan/windows_frame_test

TST: Fix two failing tests on Windows #10631

Author: jreback

pandas/tests/test_frame.py

@@ -11629,7 +11629,7 @@ def test_apply_mixed_dtype_corner(self):
         result = df[:0].apply(np.mean, axis=1)
         # the result here is actually kind of ambiguous, should it be a Series
         # or a DataFrame?
-        expected = Series(np.nan, index=pd.Index([], dtype=int))
+        expected = Series(np.nan, index=pd.Index([], dtype='int64'))
         assert_series_equal(result, expected)
 
         df = DataFrame({'A': ['foo'],
@@ -15458,7 +15458,8 @@ def test_to_csv_with_dst_transitions(self):
                                   ambiguous='infer')
 
             for i in [times, times+pd.Timedelta('10s')]:
-                df = DataFrame({'A' : range(len(i))}, index=i)
+                time_range = np.array(range(len(i)), dtype='int64')
+                df = DataFrame({'A' : time_range}, index=i)
                 df.to_csv(path,index=True)
 
                 # we have to reconvert the index as we