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tests.py
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# !/usr/bin/python
# coding=utf-8
import unittest
import arrow
from datetime import datetime as pydatetime
from datetime import timedelta
from datemath import dm, datemath
from datemath.helpers import DateMathException as DateMathException
from dateutil import tz
from freezegun import freeze_time
import pytz
iso8601 = 'YYYY-MM-DDTHH:mm:ssZZ'
class TestDM(unittest.TestCase):
def testBasic(self) -> None:
# Make sure our helpers return the correct objects
self.assertIsInstance(datemath('now'), pydatetime)
self.assertIsInstance(dm('now'), arrow.arrow.Arrow)
# Baisc dates
self.assertEqual(dm('2016.01.02').format(iso8601), '2016-01-02T00:00:00+00:00')
self.assertEqual(dm('2016-01-02').format(iso8601), '2016-01-02T00:00:00+00:00')
self.assertEqual(dm('2016-01-02 01:00:00').format(iso8601), '2016-01-02T01:00:00+00:00')
def testRounding(self) -> None:
# Rounding Tests
self.assertEqual(dm('2016-01-01||/d').format('YYYY-MM-DDTHH:mm:ssZZ'), '2016-01-01T00:00:00+00:00')
self.assertEqual(dm('2014-11-18||/y').format('YYYY-MM-DDTHH:mm:ssZZ'), '2014-01-01T00:00:00+00:00')
self.assertEqual(dm('2016-01-01 14:00:00||/w').format('YYYY-MM-DDTHH:mm:ssZZ'), '2015-12-28T00:00:00+00:00')
self.assertEqual(dm('2014-11||/M').format('YYYY-MM-DDTHH:mm:ssZZ'), '2014-11-01T00:00:00+00:00')
self.assertEqual(dm('2016-01-02||/M+1h+1m').format(iso8601), '2016-01-01T01:01:00+00:00')
self.assertEqual(dm('2016-01-02||/d+1h').format(iso8601), '2016-01-02T01:00:00+00:00')
self.assertEqual(dm('2016-01-02T14:02:00||/h').format(iso8601), '2016-01-02T14:00:00+00:00')
self.assertEqual(dm('2016-01-02T14:02:00||/H').format(iso8601), '2016-01-02T14:00:00+00:00')
# Rounding Up Tests
self.assertEqual(dm('2016-01-01||/d', roundDown=False).format('YYYY-MM-DDTHH:mm:ssZZ'), '2016-01-01T23:59:59+00:00')
self.assertEqual(dm('2014-11-18||/y', roundDown=False).format('YYYY-MM-DDTHH:mm:ssZZ'), '2014-12-31T23:59:59+00:00')
def testTimezone(self) -> None:
# Timezone Tests
with freeze_time(datemath('now/d', tz='US/Pacific')):
self.assertEqual(datemath('now/d', tz='US/Pacific'), pydatetime.now(tz=pytz.timezone("US/Pacific")))
with freeze_time(pydatetime(2017, 9, 22, 10, 20, 00, tzinfo=tz.gettz('US/Pacific'))):
self.assertEqual(dm('2017-09-22 10:20:00', tz='US/Pacific').datetime, pydatetime.now(tz=pytz.timezone("US/Pacific")))
with freeze_time(datemath('2016-01-01T00:00:00', tz='UTC')):
self.assertEqual(dm('2016-01-01', tz='UTC'), arrow.get('2016-01-01').to('UTC'))
with freeze_time(datemath('2016-01-01', tz='US/Eastern')):
self.assertEqual(dm('2016-01-01', tz='US/Eastern'), pydatetime(2016, 1, 1, tzinfo=tz.gettz('US/Eastern')))
with freeze_time(datemath('2016-01-01T01:00:00', tz='US/Central')):
self.assertEqual(datemath('2016-01-01T01:00:00', tz='US/Central'), pydatetime(2016, 1, 1, 1, 0, 0, tzinfo=tz.gettz('US/Central')))
with freeze_time(datemath('2016-01-01T02:00:00', tz='US/Eastern')):
self.assertEqual(datemath('2016-01-01T02:00:00', tz='US/Eastern'), pydatetime(2016, 1, 1, 2, tzinfo=tz.gettz('US/Eastern')))
# TZ offset inside of date string
self.assertEqual(datemath('2016-01-01T16:20:00.5+12:00'), pydatetime(2016, 1, 1, 16, 20, 0, 500000, tzinfo=tz.tzoffset(None, timedelta(hours=12))))
self.assertEqual(datemath('2016-01-01T16:20:00.5-05:00'), pydatetime(2016, 1, 1, 16, 20, 0, 500000, tzinfo=tz.tzoffset(None, timedelta(hours=-5))))
self.assertEqual(datemath('2016-01-01T16:20:00.5-00:00'), pydatetime(2016, 1, 1, 16, 20, 0, 500000, tzinfo=tz.tzoffset(None, timedelta(hours=0))))
# TZ offset inside of date string with datemath
self.assertEqual(datemath('2016-01-01T16:20:00.5+12:00||+1d'), pydatetime(2016, 1, 2, 16, 20, 0, 500000, tzinfo=tz.tzoffset(None, timedelta(hours=12))))
self.assertEqual(datemath('2016-01-01T16:20:00.6+12:00||+2d+1h'), pydatetime(2016, 1, 3, 17, 20, 0, 600000, tzinfo=tz.tzoffset(None, timedelta(hours=12))))
# If a TZ offset is in a datetime string, and there is a tz param used, the TZ offset will take precedence for the returned timeobj
self.assertEqual(datemath('2016-01-01T16:20:00.6+12:00||+2d+1h', tz='US/Eastern'), pydatetime(2016, 1, 3, 17, 20, 0, 600000, tzinfo=tz.tzoffset(None, timedelta(hours=12))))
def testRelativeFormats(self) -> None:
# relitive formats
# addition
self.assertEqual(dm('+1s').format(iso8601), arrow.utcnow().shift(seconds=+1).format(iso8601))
self.assertEqual(dm('+1m').format(iso8601), arrow.utcnow().shift(minutes=+1).format(iso8601))
self.assertEqual(dm('+1h').format(iso8601), arrow.utcnow().shift(hours=+1).format(iso8601))
self.assertEqual(dm('+1d').format(iso8601), arrow.utcnow().shift(days=+1).format(iso8601))
self.assertEqual(dm('+1w').format(iso8601), arrow.utcnow().shift(weeks=+1).format(iso8601))
self.assertEqual(dm('+1M').format(iso8601), arrow.utcnow().shift(months=+1).format(iso8601))
self.assertEqual(dm('+1Y').format(iso8601), arrow.utcnow().shift(years=+1).format(iso8601))
self.assertEqual(dm('+1y').format(iso8601), arrow.utcnow().shift(years=+1).format(iso8601))
# subtraction
self.assertEqual(dm('-1s').format(iso8601), arrow.utcnow().shift(seconds=-1).format(iso8601))
self.assertEqual(dm('-1m').format(iso8601), arrow.utcnow().shift(minutes=-1).format(iso8601))
self.assertEqual(dm('-1h').format(iso8601), arrow.utcnow().shift(hours=-1).format(iso8601))
self.assertEqual(dm('-1d').format(iso8601), arrow.utcnow().shift(days=-1).format(iso8601))
self.assertEqual(dm('-1w').format(iso8601), arrow.utcnow().shift(weeks=-1).format(iso8601))
self.assertEqual(dm('-1M').format(iso8601), arrow.utcnow().shift(months=-1).format(iso8601))
self.assertEqual(dm('-1Y').format(iso8601), arrow.utcnow().shift(years=-1).format(iso8601))
self.assertEqual(dm('-1y').format(iso8601), arrow.utcnow().shift(years=-1).format(iso8601))
# rounding
self.assertEqual(dm('/s').format(iso8601), arrow.utcnow().floor('second').format(iso8601))
self.assertEqual(dm('/m').format(iso8601), arrow.utcnow().floor('minute').format(iso8601))
self.assertEqual(dm('/h').format(iso8601), arrow.utcnow().floor('hour').format(iso8601))
self.assertEqual(dm('/d').format(iso8601), arrow.utcnow().floor('day').format(iso8601))
self.assertEqual(dm('/w').format(iso8601), arrow.utcnow().floor('week').format(iso8601))
self.assertEqual(dm('/M').format(iso8601), arrow.utcnow().floor('month').format(iso8601))
self.assertEqual(dm('/Y').format(iso8601), arrow.utcnow().floor('year').format(iso8601))
self.assertEqual(dm('/y').format(iso8601), arrow.utcnow().floor('year').format(iso8601))
# rounding up
self.assertEqual(dm('/s', roundDown=False).format(iso8601), arrow.utcnow().ceil('second').format(iso8601))
self.assertEqual(dm('/m', roundDown=False).format(iso8601), arrow.utcnow().ceil('minute').format(iso8601))
self.assertEqual(dm('/h', roundDown=False).format(iso8601), arrow.utcnow().ceil('hour').format(iso8601))
self.assertEqual(dm('/d', roundDown=False).format(iso8601), arrow.utcnow().ceil('day').format(iso8601))
self.assertEqual(dm('/w', roundDown=False).format(iso8601), arrow.utcnow().ceil('week').format(iso8601))
self.assertEqual(dm('/M', roundDown=False).format(iso8601), arrow.utcnow().ceil('month').format(iso8601))
self.assertEqual(dm('/Y', roundDown=False).format(iso8601), arrow.utcnow().ceil('year').format(iso8601))
self.assertEqual(dm('/y', roundDown=False).format(iso8601), arrow.utcnow().ceil('year').format(iso8601))
# roundDown option tests
self.assertEqual(dm('2016-01-01T14:00:00||/d').format(iso8601), '2016-01-01T00:00:00+00:00')
self.assertEqual(dm('2016-01-01T14:00:00||/d', roundDown=False).format(iso8601), '2016-01-01T23:59:59+00:00')
# complicated date math
self.assertEqual(dm('now/d-1h').format(iso8601), arrow.utcnow().floor('day').shift(hours=-1).format(iso8601))
self.assertEqual(dm('+1h').format(iso8601), arrow.utcnow().shift(hours=+1).format(iso8601))
self.assertEqual(dm('/M+2d').format(iso8601), arrow.utcnow().floor('month').shift(days=+2).format(iso8601))
self.assertEqual(dm('now/w+2d-2h').format(iso8601), arrow.utcnow().floor('week').shift(days=+2, hours=-2).format(iso8601))
self.assertEqual(dm('now/M+1w-2h+10s').format(iso8601), arrow.utcnow().floor('month').shift(weeks=+1, hours=-2, seconds=+10).format(iso8601))
self.assertEqual(dm('now-1d/d').format(iso8601), arrow.utcnow().shift(days=-1).floor('day').format(iso8601))
self.assertEqual(dm('now+1d/d').format(iso8601), arrow.utcnow().shift(days=1).floor('day').format(iso8601))
self.assertEqual(dm('now-10d/d').format(iso8601), arrow.utcnow().shift(days=-10).floor('day').format(iso8601))
self.assertEqual(dm('now+10d/d').format(iso8601), arrow.utcnow().shift(days=10).floor('day').format(iso8601))
self.assertEqual(dm('now-29d/d').format(iso8601), arrow.utcnow().shift(days=-29).floor('day').format(iso8601))
def testFuture(self) -> None:
# future
self.assertEqual(dm('+1s').format(iso8601), arrow.utcnow().shift(seconds=+1).format(iso8601))
self.assertEqual(dm('+1s+2m+3h').format(iso8601), arrow.utcnow().shift(seconds=+1, minutes=+2, hours=+3).format(iso8601))
self.assertEqual(dm('+1m').format(iso8601), arrow.utcnow().shift(minutes=+1).format(iso8601))
self.assertEqual(dm('+1m+5h').format(iso8601), arrow.utcnow().shift(minutes=+1, hours=+5).format(iso8601))
self.assertEqual(dm('/d+1m+5h').format(iso8601), arrow.utcnow().floor('day').shift(minutes=+1, hours=+5).format(iso8601))
self.assertEqual(dm('+1h').format(iso8601), arrow.utcnow().shift(hours=+1).format(iso8601))
self.assertEqual(dm('+1w').format(iso8601), arrow.utcnow().shift(weeks=+1).format(iso8601))
self.assertEqual(dm('+1w+12d').format(iso8601), arrow.utcnow().shift(weeks=+1, days=+12).format(iso8601))
self.assertEqual(dm('+2y').format(iso8601), arrow.utcnow().shift(years=+2).format(iso8601))
self.assertEqual(dm('+2y+22d+4h').format(iso8601), arrow.utcnow().shift(years=+2, days=+22, hours=+4).format(iso8601))
# past
self.assertEqual(dm('-3w').format(iso8601), arrow.utcnow().shift(weeks=-3).format(iso8601))
self.assertEqual(dm('-3W').format(iso8601), arrow.utcnow().shift(weeks=-3).format(iso8601))
self.assertEqual(dm('-3w-2d-6h').format(iso8601), arrow.utcnow().shift(weeks=-3, days=-2, hours=-6).format(iso8601))
self.assertEqual(dm('-3w-2d-22h-36s').format(iso8601), arrow.utcnow().shift(weeks=-3, days=-2, hours=-22, seconds=-36).format(iso8601))
self.assertEqual(dm('-6y-3w-2d-22h-36s').format(iso8601), arrow.utcnow().shift(years=-6, weeks=-3, days=-2, hours=-22, seconds=-36).format(iso8601))
def testOther(self) -> None:
import datetime
delta = datetime.timedelta(seconds=1)
# datetime objects
self.assertAlmostEqual(dm('now').datetime, arrow.utcnow().datetime, delta=delta)
self.assertAlmostEqual(dm('now+1d').datetime, arrow.utcnow().shift(days=+1).datetime, delta=delta)
self.assertAlmostEqual(dm('/w').datetime, arrow.utcnow().floor('week').datetime, delta=delta)
# Floats
self.assertEqual(dm('now-2.5h').format(iso8601), arrow.utcnow().shift(hours=-2.5).format(iso8601))
self.assertEqual(dm('now-2.5d').format(iso8601), arrow.utcnow().shift(days=-2.5).format(iso8601))
# Test epoch timestamps
self.assertEqual(dm('1451610061').format(iso8601), '2016-01-01T01:01:01+00:00')
self.assertEqual(dm(1367900664).format(iso8601), '2013-05-07T04:24:24+00:00')
self.assertRaises(DateMathException, dm, '1451610061000')
try:
dm(1451610061000)
except DateMathException as e:
self.assertTrue('Unable to parse epoch timestamps in millis' in str(e))
def testExceptions(self) -> None:
# Catch invalid timeunits
self.assertRaises(DateMathException, dm, '+1,')
self.assertRaises(DateMathException, dm, '+1.')
self.assertRaises(DateMathException, dm, '+1ö')
self.assertRaises(DateMathException, dm, '+1ä')
self.assertRaises(DateMathException, dm, '+1ü')
self.assertRaises(DateMathException, dm, '+1ß')
self.assertRaises(DateMathException, dm, '2')
self.assertRaises(DateMathException, datemath, '2')
self.assertRaises(DateMathException, dm, '123')
self.assertRaises(DateMathException, datemath, '123')
try:
dm('+1,')
except DateMathException as e:
self.assertTrue('is not a valid timeunit' in str(e))
if __name__ == "__main__":
print(datemath('now/d', tz='US/Pacific'))
unittest.main()