TST: fix local timezone checking with .timestamp()

Author: jreback

pandas/tests/scalar/test_timestamp.py

@@ -1101,13 +1101,18 @@ def test_timestamp(self):
 
         tsc = Timestamp('2014-10-11 11:00:01.12345678', tz='US/Central')
         utsc = tsc.tz_convert('UTC')
+
         # utsc is a different representation of the same time
         assert tsc.timestamp() == utsc.timestamp()
 
         if PY3:
-            # should agree with datetime.timestamp method
-            dt = ts.to_pydatetime()
-            assert dt.timestamp() == ts.timestamp()
+
+            # datetime.timestamp() converts in the local timezone
+            with tm.set_timezone('UTC'):
+
+                # should agree with datetime.timestamp method
+                dt = ts.to_pydatetime()
+                assert dt.timestamp() == ts.timestamp()
 
 
 class TestTimestampNsOperations(object):

pandas/tests/tseries/test_timezones.py

@@ -13,7 +13,7 @@
 
 import pandas.util.testing as tm
 import pandas.tseries.offsets as offsets
-from pandas.compat import lrange, zip
+from pandas.compat import lrange, zip, PY3
 from pandas.core.indexes.datetimes import bdate_range, date_range
 from pandas.core.dtypes.dtypes import DatetimeTZDtype
 from pandas._libs import tslib
@@ -1278,16 +1278,22 @@ def test_replace_tzinfo(self):
         result_dt = dt.replace(tzinfo=tzinfo)
         result_pd = Timestamp(dt).replace(tzinfo=tzinfo)
 
-        if hasattr(result_dt, 'timestamp'):  # New method in Py 3.3
-            assert result_dt.timestamp() == result_pd.timestamp()
+        if PY3:
+            # datetime.timestamp() converts in the local timezone
+            with tm.set_timezone('UTC'):
+                assert result_dt.timestamp() == result_pd.timestamp()
+
         assert result_dt == result_pd
         assert result_dt == result_pd.to_pydatetime()
 
         result_dt = dt.replace(tzinfo=tzinfo).replace(tzinfo=None)
         result_pd = Timestamp(dt).replace(tzinfo=tzinfo).replace(tzinfo=None)
 
-        if hasattr(result_dt, 'timestamp'):  # New method in Py 3.3
-            assert result_dt.timestamp() == result_pd.timestamp()
+        if PY3:
+            # datetime.timestamp() converts in the local timezone
+            with tm.set_timezone('UTC'):
+                assert result_dt.timestamp() == result_pd.timestamp()
+
         assert result_dt == result_pd
         assert result_dt == result_pd.to_pydatetime()