def test_infer_format_invalid_date():
date = infer_format('Tuesday 5 March 2019 08:59')
assert date.format == '%A %d %B %Y %H:%M'
assert date.locale == 'en_US.UTF-8'
assert date.date_string == 'Tuesday 5 March 2019 08:59'
with pytest.raises(ValueError):
date = infer_format('Tuesday 5 Marc 2019 08:59')
def test_infer_format_multiple_languages():
date = infer_format('dinsdag 5 maart 2019 08:59')
assert date.format == '%A %d %B %Y %H:%M'
assert date.locale == 'nl_NL.UTF-8'
date = infer_format('Tuesday 5 March 2019 08:59')
assert date.format == '%A %d %B %Y %H:%M'
assert date.locale == 'en_US.UTF-8'
date = infer_format('Dienstag 5 März 2019 08:59')
assert date.format == '%A %d %B %Y %H:%M'
assert date.locale == 'de_DE.UTF-8'
def test_infer_format():
assert infer_format(
'Tuesday 5 March 2019 08:59').format == '%A %d %B %Y %H:%M'
assert infer_format('Friday (10 June)').format == '%A (%d %B)'
assert infer_format('10 November').format == '%d %B'
assert infer_format('August 3, 2009').format == '%B %d, %Y'
assert infer_format('2 May 1980').format == '%d %b %Y'
assert infer_format('20-08-2016').format == '%d-%m-%Y'
assert infer_format('Friday').format == '%A'
assert infer_format('23 feb.').format == '%d %b.'
assert infer_format('01 01 2015').format == '%d %m %Y'
assert infer_format('22/05/13').format == '%d/%m/%y'
def test_infer_format_unanchored_weekdays():
date = infer_format('vrijdag')
assert date.format == '%A'
assert date.locale == 'nl_NL.UTF-8'
assert date.datetime.year == 1900
assert date.datetime.day == 15
assert date.datetime.month == 1
def test_infer_format():
assert infer_format(
'Tuesday 5 March 2019 08:59').format == '%A %d %B %Y %H:%M'
assert infer_format('Friday (10 June)').format == '%A (%d %B)'
assert infer_format('10 November').format == '%d %B'
assert infer_format('August 3, 2009').format == '%B %d, %Y'
assert infer_format('2 May 1980').format == '%d %b %Y'
assert infer_format('20-08-2016').format == '%d-%m-%Y'
assert infer_format('Friday').format == '%A'
assert infer_format('23 feb.').format == '%d %b.'
assert infer_format('01 01 2015').format == '%d %m %Y'
assert infer_format('22/05/13').format == '%d/%m/%y'
assert infer_format('0411').format == '%Y'
# Odd edge case which results into a parsing including timezone information.
# This should be handled gracefully.
assert infer_format('15-34-2019').format == '%H-%M%z'