TST: don't use deprecated DateRange

Author: wesm

pandas/core/daterange.py

@@ -25,7 +25,7 @@ def __new__(cls, start=None, end=None, periods=None,
             offset = datetools.get_offset(time_rule)
 
         return DatetimeIndex(start=start, end=end,
-                             periods=periods, offset=offset,
+                             periods=periods, freq=offset,
                              tzinfo=tzinfo, name=name, **kwds)
 
     def __setstate__(self, aug_state):

pandas/stats/tests/test_math.py

@@ -5,7 +5,7 @@
 from numpy.random import randn
 import numpy as np
 
-from pandas.core.api import Series, DataFrame, DateRange
+from pandas.core.api import Series, DataFrame, date_range
 from pandas.util.testing import assert_almost_equal
 import pandas.core.datetools as datetools
 import pandas.stats.moments as mom
@@ -35,7 +35,7 @@ def setUp(self):
         arr[self._nan_locs] = np.NaN
 
         self.arr = arr
-        self.rng = DateRange(datetime(2009, 1, 1), periods=N)
+        self.rng = date_range(datetime(2009, 1, 1), periods=N)
 
         self.series = Series(arr.copy(), index=self.rng)