/usr/share/pyshared/pandas/tests/test_daterange.py is in python-pandas 0.7.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import pickle
import unittest
import numpy as np
import pandas.core.datetools as datetools
from pandas.core.index import Index
from pandas.core.daterange import DateRange, generate_range
import pandas.core.daterange as daterange
try:
import pytz
except ImportError:
pass
def eqXDateRange(kwargs, expected):
rng = generate_range(**kwargs)
assert(np.array_equal(list(rng), expected))
START, END = datetime(2009, 1, 1), datetime(2010, 1, 1)
class TestDateRangeGeneration(unittest.TestCase):
def test_generate(self):
rng1 = list(generate_range(START, END, offset=datetools.bday))
rng2 = list(generate_range(START, END, time_rule='WEEKDAY'))
self.assert_(np.array_equal(rng1, rng2))
def test_1(self):
eqXDateRange(dict(start=datetime(2009, 3, 25),
periods=2),
[datetime(2009, 3, 25), datetime(2009, 3, 26)])
def test_2(self):
eqXDateRange(dict(start=datetime(2008, 1, 1),
end=datetime(2008, 1, 3)),
[datetime(2008, 1, 1),
datetime(2008, 1, 2),
datetime(2008, 1, 3)])
def test_3(self):
eqXDateRange(dict(start = datetime(2008, 1, 5),
end = datetime(2008, 1, 6)),
[])
class TestDateRange(unittest.TestCase):
def setUp(self):
self.rng = DateRange(START, END, offset=datetools.bday)
def test_constructor(self):
rng = DateRange(START, END, offset=datetools.bday)
rng = DateRange(START, periods=20, offset=datetools.bday)
rng = DateRange(end=START, periods=20, offset=datetools.bday)
def test_cached_range(self):
rng = DateRange._cached_range(START, END, offset=datetools.bday)
rng = DateRange._cached_range(START, periods=20, offset=datetools.bday)
rng = DateRange._cached_range(end=START, periods=20,
offset=datetools.bday)
self.assertRaises(Exception, DateRange._cached_range, START, END)
self.assertRaises(Exception, DateRange._cached_range, START,
offset=datetools.bday)
self.assertRaises(Exception, DateRange._cached_range, end=END,
offset=datetools.bday)
self.assertRaises(Exception, DateRange._cached_range, periods=20,
offset=datetools.bday)
def test_cached_range_bug(self):
rng = DateRange('2010-09-01 05:00:00', periods=50,
offset=datetools.DateOffset(hours=6))
self.assertEquals(len(rng), 50)
self.assertEquals(rng[0], datetime(2010, 9, 1, 5))
def test_comparison(self):
d = self.rng[10]
comp = self.rng > d
self.assert_(comp[11])
self.assert_(not comp[9])
def test_copy(self):
cp = self.rng.copy()
repr(cp)
self.assert_(cp.equals(self.rng))
def test_repr(self):
# only really care that it works
repr(self.rng)
def test_getitem(self):
smaller = self.rng[:5]
self.assert_(np.array_equal(smaller, self.rng.view(np.ndarray)[:5]))
self.assertEquals(smaller.offset, self.rng.offset)
sliced = self.rng[::5]
self.assertEquals(sliced.offset, datetools.bday * 5)
fancy_indexed = self.rng[[4, 3, 2, 1, 0]]
self.assertEquals(len(fancy_indexed), 5)
self.assert_(not isinstance(fancy_indexed, DateRange))
# 32-bit vs. 64-bit platforms
self.assertEquals(self.rng[4], self.rng[np.int_(4)])
def test_getitem_matplotlib_hackaround(self):
values = self.rng[:, None]
expected = self.rng.values[:, None]
self.assert_(np.array_equal(values, expected))
def test_shift(self):
shifted = self.rng.shift(5)
self.assertEquals(shifted[0], self.rng[5])
self.assertEquals(shifted.offset, self.rng.offset)
shifted = self.rng.shift(-5)
self.assertEquals(shifted[5], self.rng[0])
self.assertEquals(shifted.offset, self.rng.offset)
shifted = self.rng.shift(0)
self.assertEquals(shifted[0], self.rng[0])
self.assertEquals(shifted.offset, self.rng.offset)
rng = DateRange(START, END, offset=datetools.bmonthEnd)
shifted = rng.shift(1, offset=datetools.bday)
self.assertEquals(shifted[0], rng[0] + datetools.bday)
def test_pickle_unpickle(self):
pickled = pickle.dumps(self.rng)
unpickled = pickle.loads(pickled)
self.assert_(unpickled.offset is not None)
def test_union(self):
# overlapping
left = self.rng[:10]
right = self.rng[5:10]
the_union = left.union(right)
self.assert_(isinstance(the_union, DateRange))
# non-overlapping, gap in middle
left = self.rng[:5]
right = self.rng[10:]
the_union = left.union(right)
self.assert_(isinstance(the_union, Index))
self.assert_(not isinstance(the_union, DateRange))
# non-overlapping, no gap
left = self.rng[:5]
right = self.rng[5:10]
the_union = left.union(right)
self.assert_(isinstance(the_union, DateRange))
# order does not matter
self.assert_(np.array_equal(right.union(left), the_union))
# overlapping, but different offset
rng = DateRange(START, END, offset=datetools.bmonthEnd)
the_union = self.rng.union(rng)
self.assert_(not isinstance(the_union, DateRange))
def test_outer_join(self):
""" should behave just as union test"""
# overlapping
left = self.rng[:10]
right = self.rng[5:10]
the_join = left.join(right, how='outer')
self.assert_(isinstance(the_join, DateRange))
# non-overlapping, gap in middle
left = self.rng[:5]
right = self.rng[10:]
the_join = left.join(right, how='outer')
self.assert_(isinstance(the_join, Index))
self.assert_(not isinstance(the_join, DateRange))
# non-overlapping, no gap
left = self.rng[:5]
right = self.rng[5:10]
the_join = left.join(right, how='outer')
self.assert_(isinstance(the_join, DateRange))
# overlapping, but different offset
rng = DateRange(START, END, offset=datetools.bmonthEnd)
the_join = self.rng.join(rng, how='outer')
self.assert_(not isinstance(the_join, DateRange))
def test_union_not_cacheable(self):
rng = DateRange('1/1/2000', periods=50, offset=datetools.Minute())
rng1 = rng[10:]
rng2 = rng[:25]
the_union = rng1.union(rng2)
self.assert_(the_union.equals(rng))
rng1 = rng[10:]
rng2 = rng[15:35]
the_union = rng1.union(rng2)
expected = rng[10:]
self.assert_(the_union.equals(expected))
def test_intersection(self):
rng = DateRange('1/1/2000', periods=50, offset=datetools.Minute())
rng1 = rng[10:]
rng2 = rng[:25]
the_int = rng1.intersection(rng2)
expected = rng[10:25]
self.assert_(the_int.equals(expected))
self.assert_(isinstance(the_int, DateRange))
self.assert_(the_int.offset == rng.offset)
the_int = rng1.intersection(rng2.view(Index))
self.assert_(the_int.equals(expected))
# non-overlapping
the_int = rng[:10].intersection(rng[10:])
expected = Index([])
self.assert_(the_int.equals(expected))
def test_intersection_bug(self):
# GH #771
a = DateRange('11/30/2011','12/31/2011')
b = DateRange('12/10/2011','12/20/2011')
result = a.intersection(b)
self.assert_(result.equals(b))
def test_with_tzinfo(self):
_skip_if_no_pytz()
tz = pytz.timezone('US/Central')
# just want it to work
start = datetime(2011, 3, 12, tzinfo=pytz.utc)
dr = DateRange(start, periods=50, offset=datetools.Hour())
self.assert_(dr.tzinfo is not None)
self.assert_(dr.tzinfo is start.tzinfo)
# DateRange with naive datetimes
dr = DateRange('1/1/2005', '1/1/2009', tzinfo=pytz.utc)
dr = DateRange('1/1/2005', '1/1/2009', tzinfo=tz)
# normalized
central = dr.tz_normalize(tz)
self.assert_(central.tzinfo is tz)
self.assert_(central[0].tzinfo is tz)
# datetimes with tzinfo set
dr = DateRange(datetime(2005, 1, 1, tzinfo=pytz.utc),
'1/1/2009', tzinfo=pytz.utc)
self.assertRaises(Exception, DateRange,
datetime(2005, 1, 1, tzinfo=pytz.utc),
'1/1/2009', tzinfo=tz)
def test_tz_localize(self):
_skip_if_no_pytz()
dr = DateRange('1/1/2009', '1/1/2010')
dr_utc = DateRange('1/1/2009', '1/1/2010', tzinfo=pytz.utc)
localized = dr.tz_localize(pytz.utc)
self.assert_(np.array_equal(dr_utc, localized))
def test_with_tzinfo_ambiguous_times(self):
_skip_if_no_pytz()
tz = pytz.timezone('US/Eastern')
# regular no problem
self.assert_(self.rng.tz_validate())
# March 13, 2011, spring forward, skip from 2 AM to 3 AM
dr = DateRange(datetime(2011, 3, 13, 1, 30), periods=3,
offset=datetools.Hour(), tzinfo=tz)
self.assert_(not dr.tz_validate())
# after dst transition
dr = DateRange(datetime(2011, 3, 13, 3, 30), periods=3,
offset=datetools.Hour(), tzinfo=tz)
self.assert_(dr.tz_validate())
# November 6, 2011, fall back, repeat 2 AM hour
dr = DateRange(datetime(2011, 11, 6, 1, 30), periods=3,
offset=datetools.Hour(), tzinfo=tz)
self.assert_(not dr.tz_validate())
# UTC is OK
dr = DateRange(datetime(2011, 3, 13), periods=48,
offset=datetools.Minute(30), tzinfo=pytz.utc)
self.assert_(dr.tz_validate())
def test_summary(self):
self.rng.summary()
self.rng[2:2].summary()
try:
DateRange('1/1/2005', '1/1/2009', tzinfo=pytz.utc).summary()
except Exception:
pass
def test_misc(self):
end = datetime(2009, 5, 13)
dr = DateRange(end=end, periods=20)
firstDate = end - 19 * datetools.bday
assert len(dr) == 20
assert dr[0] == firstDate
assert dr[-1] == end
# test utility methods
def test_infer_tzinfo(self):
_skip_if_no_pytz()
eastern = pytz.timezone('US/Eastern')
utc = pytz.utc
_start = datetime(2001, 1, 1)
_end = datetime(2009, 1, 1)
start = eastern.localize(_start)
end = eastern.localize(_end)
assert(daterange._infer_tzinfo(start, end) is eastern)
assert(daterange._infer_tzinfo(start, None) is eastern)
assert(daterange._infer_tzinfo(None, end) is eastern)
start = utc.localize(_start)
end = utc.localize(_end)
assert(daterange._infer_tzinfo(start, end) is utc)
end = eastern.localize(_end)
self.assertRaises(Exception, daterange._infer_tzinfo, start, end)
self.assertRaises(Exception, daterange._infer_tzinfo, end, start)
def test_date_parse_failure(self):
badly_formed_date = '2007/100/1'
self.assertRaises(ValueError, DateRange, start=badly_formed_date,
periods=10)
self.assertRaises(ValueError, DateRange, end=badly_formed_date,
periods=10)
self.assertRaises(ValueError, DateRange, badly_formed_date,
badly_formed_date)
def test_equals(self):
self.assertFalse(self.rng.equals(list(self.rng)))
def test_daterange_bug_456(self):
# GH #456
rng1 = DateRange('12/5/2011', '12/5/2011')
rng2 = DateRange('12/2/2011', '12/5/2011')
rng2.offset = datetools.BDay()
result = rng1.union(rng2)
self.assert_(type(result) == DateRange)
def test_error_with_zero_monthends(self):
self.assertRaises(ValueError, DateRange, '1/1/2000', '1/1/2001',
offset=datetools.MonthEnd(0))
def test_range_bug(self):
# GH #770
offset = datetools.DateOffset(months=3)
result = DateRange("2011-1-1", "2012-1-31", offset=offset)
start = datetime(2011, 1, 1)
exp_values = [start + i * offset for i in range(5)]
self.assert_(np.array_equal(result, exp_values))
def _skip_if_no_pytz():
try:
import pytz
except ImportError:
import nose
raise nose.SkipTest
if __name__ == '__main__':
import nose
nose.runmodule(argv=[__file__,'-vvs','-x','--pdb', '--pdb-failure'],
exit=False)
|