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test_converter.py
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test_converter.py
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import pytest
from datetime import datetime, date
import numpy as np
from pandas import Timestamp, Period, Index
from pandas.compat import u
import pandas.util.testing as tm
from pandas.tseries.offsets import Second, Milli, Micro, Day
from pandas.compat.numpy import np_datetime64_compat
converter = pytest.importorskip('pandas.plotting._converter')
def test_timtetonum_accepts_unicode():
assert (converter.time2num("00:01") == converter.time2num(u("00:01")))
class TestDateTimeConverter(tm.TestCase):
def setUp(self):
self.dtc = converter.DatetimeConverter()
self.tc = converter.TimeFormatter(None)
def test_convert_accepts_unicode(self):
r1 = self.dtc.convert("12:22", None, None)
r2 = self.dtc.convert(u("12:22"), None, None)
assert (r1 == r2), "DatetimeConverter.convert should accept unicode"
def test_conversion(self):
rs = self.dtc.convert(['2012-1-1'], None, None)[0]
xp = datetime(2012, 1, 1).toordinal()
self.assertEqual(rs, xp)
rs = self.dtc.convert('2012-1-1', None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert(date(2012, 1, 1), None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert(datetime(2012, 1, 1).toordinal(), None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert('2012-1-1', None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert(Timestamp('2012-1-1'), None, None)
self.assertEqual(rs, xp)
# also testing datetime64 dtype (GH8614)
rs = self.dtc.convert(np_datetime64_compat('2012-01-01'), None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert(np_datetime64_compat(
'2012-01-01 00:00:00+0000'), None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert(np.array([
np_datetime64_compat('2012-01-01 00:00:00+0000'),
np_datetime64_compat('2012-01-02 00:00:00+0000')]), None, None)
self.assertEqual(rs[0], xp)
# we have a tz-aware date (constructed to that when we turn to utc it
# is the same as our sample)
ts = (Timestamp('2012-01-01')
.tz_localize('UTC')
.tz_convert('US/Eastern')
)
rs = self.dtc.convert(ts, None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert(ts.to_pydatetime(), None, None)
self.assertEqual(rs, xp)
rs = self.dtc.convert(Index([ts - Day(1), ts]), None, None)
self.assertEqual(rs[1], xp)
rs = self.dtc.convert(Index([ts - Day(1), ts]).to_pydatetime(),
None, None)
self.assertEqual(rs[1], xp)
def test_conversion_float(self):
decimals = 9
rs = self.dtc.convert(
Timestamp('2012-1-1 01:02:03', tz='UTC'), None, None)
xp = converter.dates.date2num(Timestamp('2012-1-1 01:02:03', tz='UTC'))
tm.assert_almost_equal(rs, xp, decimals)
rs = self.dtc.convert(
Timestamp('2012-1-1 09:02:03', tz='Asia/Hong_Kong'), None, None)
tm.assert_almost_equal(rs, xp, decimals)
rs = self.dtc.convert(datetime(2012, 1, 1, 1, 2, 3), None, None)
tm.assert_almost_equal(rs, xp, decimals)
def test_conversion_outofbounds_datetime(self):
# 2579
values = [date(1677, 1, 1), date(1677, 1, 2)]
rs = self.dtc.convert(values, None, None)
xp = converter.dates.date2num(values)
tm.assert_numpy_array_equal(rs, xp)
rs = self.dtc.convert(values[0], None, None)
xp = converter.dates.date2num(values[0])
self.assertEqual(rs, xp)
values = [datetime(1677, 1, 1, 12), datetime(1677, 1, 2, 12)]
rs = self.dtc.convert(values, None, None)
xp = converter.dates.date2num(values)
tm.assert_numpy_array_equal(rs, xp)
rs = self.dtc.convert(values[0], None, None)
xp = converter.dates.date2num(values[0])
self.assertEqual(rs, xp)
def test_time_formatter(self):
self.tc(90000)
def test_dateindex_conversion(self):
decimals = 9
for freq in ('B', 'L', 'S'):
dateindex = tm.makeDateIndex(k=10, freq=freq)
rs = self.dtc.convert(dateindex, None, None)
xp = converter.dates.date2num(dateindex._mpl_repr())
tm.assert_almost_equal(rs, xp, decimals)
def test_resolution(self):
def _assert_less(ts1, ts2):
val1 = self.dtc.convert(ts1, None, None)
val2 = self.dtc.convert(ts2, None, None)
if not val1 < val2:
raise AssertionError('{0} is not less than {1}.'.format(val1,
val2))
# Matplotlib's time representation using floats cannot distinguish
# intervals smaller than ~10 microsecond in the common range of years.
ts = Timestamp('2012-1-1')
_assert_less(ts, ts + Second())
_assert_less(ts, ts + Milli())
_assert_less(ts, ts + Micro(50))
def test_convert_nested(self):
inner = [Timestamp('2017-01-01', Timestamp('2017-01-02'))]
data = [inner, inner]
result = self.dtc.convert(data, None, None)
expected = [self.dtc.convert(x, None, None) for x in data]
assert result == expected
class TestPeriodConverter(tm.TestCase):
def setUp(self):
self.pc = converter.PeriodConverter()
class Axis(object):
pass
self.axis = Axis()
self.axis.freq = 'D'
def test_convert_accepts_unicode(self):
r1 = self.pc.convert("2012-1-1", None, self.axis)
r2 = self.pc.convert(u("2012-1-1"), None, self.axis)
assert r1 == r2
def test_conversion(self):
rs = self.pc.convert(['2012-1-1'], None, self.axis)[0]
xp = Period('2012-1-1').ordinal
self.assertEqual(rs, xp)
rs = self.pc.convert('2012-1-1', None, self.axis)
self.assertEqual(rs, xp)
rs = self.pc.convert([date(2012, 1, 1)], None, self.axis)[0]
self.assertEqual(rs, xp)
rs = self.pc.convert(date(2012, 1, 1), None, self.axis)
self.assertEqual(rs, xp)
rs = self.pc.convert([Timestamp('2012-1-1')], None, self.axis)[0]
self.assertEqual(rs, xp)
rs = self.pc.convert(Timestamp('2012-1-1'), None, self.axis)
self.assertEqual(rs, xp)
# FIXME
# rs = self.pc.convert(
# np_datetime64_compat('2012-01-01'), None, self.axis)
# self.assertEqual(rs, xp)
#
# rs = self.pc.convert(
# np_datetime64_compat('2012-01-01 00:00:00+0000'),
# None, self.axis)
# self.assertEqual(rs, xp)
#
# rs = self.pc.convert(np.array([
# np_datetime64_compat('2012-01-01 00:00:00+0000'),
# np_datetime64_compat('2012-01-02 00:00:00+0000')]),
# None, self.axis)
# self.assertEqual(rs[0], xp)
def test_integer_passthrough(self):
# GH9012
rs = self.pc.convert([0, 1], None, self.axis)
xp = [0, 1]
self.assertEqual(rs, xp)
def test_convert_nested(self):
data = ['2012-1-1', '2012-1-2']
r1 = self.pc.convert([data, data], None, self.axis)
r2 = [self.pc.convert(data, None, self.axis) for _ in range(2)]
assert r1 == r2