/usr/lib/python3/dist-packages/matplotlib/tests/test_dates.py is in python3-matplotlib 2.0.0+dfsg1-2.
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unicode_literals)
import six
from six.moves import map
import datetime
import warnings
import tempfile
import dateutil
import pytz
try:
# mock in python 3.3+
from unittest import mock
except ImportError:
import mock
from nose.tools import assert_raises, assert_equal
from nose.plugins.skip import SkipTest
from matplotlib.testing.decorators import image_comparison, cleanup
import matplotlib.pyplot as plt
import matplotlib.dates as mdates
@image_comparison(baseline_images=['date_empty'], extensions=['png'])
def test_date_empty():
# make sure mpl does the right thing when told to plot dates even
# if no date data has been presented, cf
# http://sourceforge.net/tracker/?func=detail&aid=2850075&group_id=80706&atid=560720
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.xaxis_date()
@image_comparison(baseline_images=['date_axhspan'], extensions=['png'])
def test_date_axhspan():
# test ax hspan with date inputs
t0 = datetime.datetime(2009, 1, 20)
tf = datetime.datetime(2009, 1, 21)
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.axhspan(t0, tf, facecolor="blue", alpha=0.25)
ax.set_ylim(t0 - datetime.timedelta(days=5),
tf + datetime.timedelta(days=5))
fig.subplots_adjust(left=0.25)
@image_comparison(baseline_images=['date_axvspan'], extensions=['png'])
def test_date_axvspan():
# test ax hspan with date inputs
t0 = datetime.datetime(2000, 1, 20)
tf = datetime.datetime(2010, 1, 21)
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.axvspan(t0, tf, facecolor="blue", alpha=0.25)
ax.set_xlim(t0 - datetime.timedelta(days=720),
tf + datetime.timedelta(days=720))
fig.autofmt_xdate()
@image_comparison(baseline_images=['date_axhline'],
extensions=['png'])
def test_date_axhline():
# test ax hline with date inputs
t0 = datetime.datetime(2009, 1, 20)
tf = datetime.datetime(2009, 1, 31)
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.axhline(t0, color="blue", lw=3)
ax.set_ylim(t0 - datetime.timedelta(days=5),
tf + datetime.timedelta(days=5))
fig.subplots_adjust(left=0.25)
@image_comparison(baseline_images=['date_axvline'],
extensions=['png'])
def test_date_axvline():
# test ax hline with date inputs
t0 = datetime.datetime(2000, 1, 20)
tf = datetime.datetime(2000, 1, 21)
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.axvline(t0, color="red", lw=3)
ax.set_xlim(t0 - datetime.timedelta(days=5),
tf + datetime.timedelta(days=5))
fig.autofmt_xdate()
@cleanup
def test_too_many_date_ticks():
# Attempt to test SF 2715172, see
# https://sourceforge.net/tracker/?func=detail&aid=2715172&group_id=80706&atid=560720
# setting equal datetimes triggers and expander call in
# transforms.nonsingular which results in too many ticks in the
# DayLocator. This should trigger a Locator.MAXTICKS RuntimeError
warnings.filterwarnings(
'ignore',
'Attempting to set identical left==right results\\nin singular '
'transformations; automatically expanding.\\nleft=\d*\.\d*, '
'right=\d*\.\d*',
UserWarning, module='matplotlib.axes')
t0 = datetime.datetime(2000, 1, 20)
tf = datetime.datetime(2000, 1, 20)
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.set_xlim((t0, tf), auto=True)
ax.plot([], [])
ax.xaxis.set_major_locator(mdates.DayLocator())
assert_raises(RuntimeError, fig.savefig, 'junk.png')
@image_comparison(baseline_images=['RRuleLocator_bounds'], extensions=['png'])
def test_RRuleLocator():
import matplotlib.testing.jpl_units as units
units.register()
# This will cause the RRuleLocator to go out of bounds when it tries
# to add padding to the limits, so we make sure it caps at the correct
# boundary values.
t0 = datetime.datetime(1000, 1, 1)
tf = datetime.datetime(6000, 1, 1)
fig = plt.figure()
ax = plt.subplot(111)
ax.set_autoscale_on(True)
ax.plot([t0, tf], [0.0, 1.0], marker='o')
rrule = mdates.rrulewrapper(dateutil.rrule.YEARLY, interval=500)
locator = mdates.RRuleLocator(rrule)
ax.xaxis.set_major_locator(locator)
ax.xaxis.set_major_formatter(mdates.AutoDateFormatter(locator))
ax.autoscale_view()
fig.autofmt_xdate()
@image_comparison(baseline_images=['DateFormatter_fractionalSeconds'],
extensions=['png'])
def test_DateFormatter():
import matplotlib.testing.jpl_units as units
units.register()
# Lets make sure that DateFormatter will allow us to have tick marks
# at intervals of fractional seconds.
t0 = datetime.datetime(2001, 1, 1, 0, 0, 0)
tf = datetime.datetime(2001, 1, 1, 0, 0, 1)
fig = plt.figure()
ax = plt.subplot(111)
ax.set_autoscale_on(True)
ax.plot([t0, tf], [0.0, 1.0], marker='o')
# rrule = mpldates.rrulewrapper( dateutil.rrule.YEARLY, interval=500 )
# locator = mpldates.RRuleLocator( rrule )
# ax.xaxis.set_major_locator( locator )
# ax.xaxis.set_major_formatter( mpldates.AutoDateFormatter(locator) )
ax.autoscale_view()
fig.autofmt_xdate()
def test_date_formatter_strftime():
"""
Tests that DateFormatter matches datetime.strftime,
check microseconds for years before 1900 for bug #3179
as well as a few related issues for years before 1900.
"""
def test_strftime_fields(dt):
"""For datetime object dt, check DateFormatter fields"""
# Note: the last couple of %%s are to check multiple %s are handled
# properly; %% should get replaced by %.
formatter = mdates.DateFormatter("%w %d %m %y %Y %H %I %M %S %%%f %%x")
# Compute date fields without using datetime.strftime,
# since datetime.strftime does not work before year 1900
formatted_date_str = (
"{weekday} {day:02d} {month:02d} {year:02d} {full_year:04d} "
"{hour24:02d} {hour12:02d} {minute:02d} {second:02d} "
"%{microsecond:06d} %x"
.format(
# weeknum=dt.isocalendar()[1], # %U/%W {weeknum:02d}
# %w Sunday=0, weekday() Monday=0
weekday=str((dt.weekday() + 1) % 7),
day=dt.day,
month=dt.month,
year=dt.year % 100,
full_year=dt.year,
hour24=dt.hour,
hour12=((dt.hour-1) % 12) + 1,
minute=dt.minute,
second=dt.second,
microsecond=dt.microsecond))
assert_equal(formatter.strftime(dt), formatted_date_str)
try:
# Test strftime("%x") with the current locale.
import locale # Might not exist on some platforms, such as Windows
locale_formatter = mdates.DateFormatter("%x")
locale_d_fmt = locale.nl_langinfo(locale.D_FMT)
expanded_formatter = mdates.DateFormatter(locale_d_fmt)
assert_equal(locale_formatter.strftime(dt),
expanded_formatter.strftime(dt))
except (ImportError, AttributeError):
pass
for year in range(1, 3000, 71):
# Iterate through random set of years
test_strftime_fields(datetime.datetime(year, 1, 1))
test_strftime_fields(datetime.datetime(year, 2, 3, 4, 5, 6, 12345))
def test_date_formatter_callable():
scale = -11
locator = mock.Mock(_get_unit=mock.Mock(return_value=scale))
callable_formatting_function = (lambda dates, _:
[dt.strftime('%d-%m//%Y') for dt in dates])
formatter = mdates.AutoDateFormatter(locator)
formatter.scaled[-10] = callable_formatting_function
assert_equal(formatter([datetime.datetime(2014, 12, 25)]),
['25-12//2014'])
def test_drange():
"""
This test should check if drange works as expected, and if all the
rounding errors are fixed
"""
start = datetime.datetime(2011, 1, 1, tzinfo=mdates.UTC)
end = datetime.datetime(2011, 1, 2, tzinfo=mdates.UTC)
delta = datetime.timedelta(hours=1)
# We expect 24 values in drange(start, end, delta), because drange returns
# dates from an half open interval [start, end)
assert_equal(24, len(mdates.drange(start, end, delta)))
# if end is a little bit later, we expect the range to contain one element
# more
end = end + datetime.timedelta(microseconds=1)
assert_equal(25, len(mdates.drange(start, end, delta)))
# reset end
end = datetime.datetime(2011, 1, 2, tzinfo=mdates.UTC)
# and tst drange with "complicated" floats:
# 4 hours = 1/6 day, this is an "dangerous" float
delta = datetime.timedelta(hours=4)
daterange = mdates.drange(start, end, delta)
assert_equal(6, len(daterange))
assert_equal(mdates.num2date(daterange[-1]), end - delta)
@cleanup
def test_empty_date_with_year_formatter():
# exposes sf bug 2861426:
# https://sourceforge.net/tracker/?func=detail&aid=2861426&group_id=80706&atid=560720
# update: I am no longer believe this is a bug, as I commented on
# the tracker. The question is now: what to do with this test
import matplotlib.dates as dates
fig = plt.figure()
ax = fig.add_subplot(111)
yearFmt = dates.DateFormatter('%Y')
ax.xaxis.set_major_formatter(yearFmt)
with tempfile.TemporaryFile() as fh:
assert_raises(ValueError, fig.savefig, fh)
def test_auto_date_locator():
def _create_auto_date_locator(date1, date2):
locator = mdates.AutoDateLocator()
locator.create_dummy_axis()
locator.set_view_interval(mdates.date2num(date1),
mdates.date2num(date2))
return locator
d1 = datetime.datetime(1990, 1, 1)
results = ([datetime.timedelta(weeks=52 * 200),
['1990-01-01 00:00:00+00:00', '2010-01-01 00:00:00+00:00',
'2030-01-01 00:00:00+00:00', '2050-01-01 00:00:00+00:00',
'2070-01-01 00:00:00+00:00', '2090-01-01 00:00:00+00:00',
'2110-01-01 00:00:00+00:00', '2130-01-01 00:00:00+00:00',
'2150-01-01 00:00:00+00:00', '2170-01-01 00:00:00+00:00']
],
[datetime.timedelta(weeks=52),
['1990-01-01 00:00:00+00:00', '1990-02-01 00:00:00+00:00',
'1990-03-01 00:00:00+00:00', '1990-04-01 00:00:00+00:00',
'1990-05-01 00:00:00+00:00', '1990-06-01 00:00:00+00:00',
'1990-07-01 00:00:00+00:00', '1990-08-01 00:00:00+00:00',
'1990-09-01 00:00:00+00:00', '1990-10-01 00:00:00+00:00',
'1990-11-01 00:00:00+00:00', '1990-12-01 00:00:00+00:00']
],
[datetime.timedelta(days=141),
['1990-01-05 00:00:00+00:00', '1990-01-26 00:00:00+00:00',
'1990-02-16 00:00:00+00:00', '1990-03-09 00:00:00+00:00',
'1990-03-30 00:00:00+00:00', '1990-04-20 00:00:00+00:00',
'1990-05-11 00:00:00+00:00']
],
[datetime.timedelta(days=40),
['1990-01-03 00:00:00+00:00', '1990-01-10 00:00:00+00:00',
'1990-01-17 00:00:00+00:00', '1990-01-24 00:00:00+00:00',
'1990-01-31 00:00:00+00:00', '1990-02-07 00:00:00+00:00']
],
[datetime.timedelta(hours=40),
['1990-01-01 00:00:00+00:00', '1990-01-01 04:00:00+00:00',
'1990-01-01 08:00:00+00:00', '1990-01-01 12:00:00+00:00',
'1990-01-01 16:00:00+00:00', '1990-01-01 20:00:00+00:00',
'1990-01-02 00:00:00+00:00', '1990-01-02 04:00:00+00:00',
'1990-01-02 08:00:00+00:00', '1990-01-02 12:00:00+00:00',
'1990-01-02 16:00:00+00:00']
],
[datetime.timedelta(minutes=20),
['1990-01-01 00:00:00+00:00', '1990-01-01 00:05:00+00:00',
'1990-01-01 00:10:00+00:00', '1990-01-01 00:15:00+00:00',
'1990-01-01 00:20:00+00:00']
],
[datetime.timedelta(seconds=40),
['1990-01-01 00:00:00+00:00', '1990-01-01 00:00:05+00:00',
'1990-01-01 00:00:10+00:00', '1990-01-01 00:00:15+00:00',
'1990-01-01 00:00:20+00:00', '1990-01-01 00:00:25+00:00',
'1990-01-01 00:00:30+00:00', '1990-01-01 00:00:35+00:00',
'1990-01-01 00:00:40+00:00']
],
[datetime.timedelta(microseconds=1500),
['1989-12-31 23:59:59.999507+00:00',
'1990-01-01 00:00:00+00:00',
'1990-01-01 00:00:00.000502+00:00',
'1990-01-01 00:00:00.001005+00:00',
'1990-01-01 00:00:00.001508+00:00']
],
)
for t_delta, expected in results:
d2 = d1 + t_delta
locator = _create_auto_date_locator(d1, d2)
assert_equal(list(map(str, mdates.num2date(locator()))),
expected)
@image_comparison(baseline_images=['date_inverted_limit'],
extensions=['png'])
def test_date_inverted_limit():
# test ax hline with date inputs
t0 = datetime.datetime(2009, 1, 20)
tf = datetime.datetime(2009, 1, 31)
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
ax.axhline(t0, color="blue", lw=3)
ax.set_ylim(t0 - datetime.timedelta(days=5),
tf + datetime.timedelta(days=5))
ax.invert_yaxis()
fig.subplots_adjust(left=0.25)
def _test_date2num_dst(date_range, tz_convert):
# Timezones
BRUSSELS = pytz.timezone('Europe/Brussels')
UTC = pytz.UTC
# Create a list of timezone-aware datetime objects in UTC
# Interval is 0b0.0000011 days, to prevent float rounding issues
dtstart = datetime.datetime(2014, 3, 30, 0, 0, tzinfo=UTC)
interval = datetime.timedelta(minutes=33, seconds=45)
interval_days = 0.0234375 # 2025 / 86400 seconds
N = 8
dt_utc = date_range(start=dtstart, freq=interval, periods=N)
dt_bxl = tz_convert(dt_utc, BRUSSELS)
expected_ordinalf = [735322.0 + (i * interval_days) for i in range(N)]
actual_ordinalf = list(mdates.date2num(dt_bxl))
assert_equal(actual_ordinalf, expected_ordinalf)
def test_date2num_dst():
# Test for github issue #3896, but in date2num around DST transitions
# with a timezone-aware pandas date_range object.
class dt_tzaware(datetime.datetime):
"""
This bug specifically occurs because of the normalization behavior of
pandas Timestamp objects, so in order to replicate it, we need a
datetime-like object that applies timezone normalization after
subtraction.
"""
def __sub__(self, other):
r = super(dt_tzaware, self).__sub__(other)
tzinfo = getattr(r, 'tzinfo', None)
if tzinfo is not None:
localizer = getattr(tzinfo, 'normalize', None)
if localizer is not None:
r = tzinfo.normalize(r)
if isinstance(r, datetime.datetime):
r = self.mk_tzaware(r)
return r
def __add__(self, other):
return self.mk_tzaware(super(dt_tzaware, self).__add__(other))
def astimezone(self, tzinfo):
dt = super(dt_tzaware, self).astimezone(tzinfo)
return self.mk_tzaware(dt)
@classmethod
def mk_tzaware(cls, datetime_obj):
kwargs = {}
attrs = ('year',
'month',
'day',
'hour',
'minute',
'second',
'microsecond',
'tzinfo')
for attr in attrs:
val = getattr(datetime_obj, attr, None)
if val is not None:
kwargs[attr] = val
return cls(**kwargs)
# Define a date_range function similar to pandas.date_range
def date_range(start, freq, periods):
dtstart = dt_tzaware.mk_tzaware(start)
return [dtstart + (i * freq) for i in range(periods)]
# Define a tz_convert function that converts a list to a new time zone.
def tz_convert(dt_list, tzinfo):
return [d.astimezone(tzinfo) for d in dt_list]
_test_date2num_dst(date_range, tz_convert)
def test_date2num_dst_pandas():
# Test for github issue #3896, but in date2num around DST transitions
# with a timezone-aware pandas date_range object.
try:
import pandas as pd
except ImportError:
raise SkipTest('pandas not installed')
def tz_convert(*args):
return pd.DatetimeIndex.tz_convert(*args).astype(datetime.datetime)
_test_date2num_dst(pd.date_range, tz_convert)
def test_DayLocator():
assert_raises(ValueError, mdates.DayLocator, interval=-1)
assert_raises(ValueError, mdates.DayLocator, interval=-1.5)
assert_raises(ValueError, mdates.DayLocator, interval=0)
assert_raises(ValueError, mdates.DayLocator, interval=1.3)
mdates.DayLocator(interval=1.0)
def test_tz_utc():
dt = datetime.datetime(1970, 1, 1, tzinfo=mdates.UTC)
dt.tzname()
if __name__ == '__main__':
import nose
nose.runmodule(argv=['-s', '--with-doctest'], exit=False)
|