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TST: added addtl datetimes test in construction (ref GH #2809/#2810) #2834

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TST: added addtl datetimes test in construction (ref GH #2809/#2810) #2834

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20 changes: 20 additions & 0 deletions pandas/tests/test_frame.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7998,6 +7998,26 @@ def test_constructor_with_datetimes(self):
expected = Series({'int64': 1, 'float64' : 1, 'datetime64[ns]': 1, 'object' : 1})
assert_series_equal(result, expected)

# GH 2809
from pandas import date_range
ind = date_range(start="2000-01-01", freq="D", periods=10)
datetimes = [ts.to_pydatetime() for ts in ind]
datetime_s = Series(datetimes)
self.assert_(datetime_s.dtype == 'M8[ns]')
df = DataFrame({'datetime_s':datetime_s})
result = df.get_dtype_counts()
expected = Series({ 'datetime64[ns]' : 1 })
assert_series_equal(result, expected)

# GH 2810
ind = date_range(start="2000-01-01", freq="D", periods=10)
datetimes = [ts.to_pydatetime() for ts in ind]
dates = [ts.date() for ts in ind]
df = DataFrame({'datetimes': datetimes, 'dates':dates})
result = df.get_dtype_counts()
expected = Series({ 'datetime64[ns]' : 1, 'object' : 1 })
assert_series_equal(result, expected)

def test_constructor_frame_copy(self):
cop = DataFrame(self.frame, copy=True)
cop['A'] = 5
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9 changes: 9 additions & 0 deletions pandas/tseries/tests/test_timezones.py
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Expand Up @@ -491,11 +491,20 @@ def test_to_datetime_tzlocal(self):
self.assert_(result.tz is pytz.utc)

def test_frame_no_datetime64_dtype(self):

dr = date_range('2011/1/1', '2012/1/1', freq='W-FRI')
dr_tz = dr.tz_localize('US/Eastern')
e = DataFrame({'A': 'foo', 'B': dr_tz}, index=dr)
self.assert_(e['B'].dtype == 'M8[ns]')

# GH 2810 (with timezones)
datetimes_naive = [ ts.to_pydatetime() for ts in dr ]
datetimes_with_tz = [ ts.to_pydatetime() for ts in dr_tz ]
df = DataFrame({'dr' : dr, 'dr_tz' : dr_tz, 'datetimes_naive': datetimes_naive, 'datetimes_with_tz' : datetimes_with_tz })
result = df.get_dtype_counts()
expected = Series({ 'datetime64[ns]' : 3, 'object' : 1 })
assert_series_equal(result, expected)

def test_hongkong_tz_convert(self):
# #1673
dr = date_range(
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