from datetime import date as d, timedelta from time import strptime from typing import cast, Type from testfixtures import ShouldRaise, mock_date, replace, compare from testfixtures.datetime import MockDate from testfixtures.tests import sample1, sample2 from unittest import TestCase class TestDate(TestCase): # NB: Only the today method is currently stubbed out, # if you need other methods, tests and patches # greatfully received! @replace('datetime.date', mock_date()) def test_today(self): from datetime import date compare(date.today(), d(2001, 1, 1)) compare(date.today(), d(2001, 1, 2)) compare(date.today(), d(2001, 1, 4)) @replace('datetime.date', mock_date(2001, 2, 3)) def test_today_supplied(self): from datetime import date compare(date.today(), d(2001, 2, 3)) @replace('datetime.date', mock_date(year=2001, month=2, day=3)) def test_today_all_kw(self): from datetime import date compare(date.today(), d(2001, 2, 3)) @replace('datetime.date', mock_date(None)) def test_today_sequence(self, t: Type[MockDate]): t.add(2002, 1, 1) t.add(2002, 1, 2) t.add(2002, 1, 3) from datetime import date compare(date.today(), d(2002, 1, 1)) compare(date.today(), d(2002, 1, 2)) compare(date.today(), d(2002, 1, 3)) @replace('datetime.date', mock_date(None)) def test_today_requested_longer_than_supplied(self, t: Type[MockDate]): t.add(2002, 1, 1) t.add(2002, 1, 2) from datetime import date compare(date.today(), d(2002, 1, 1)) compare(date.today(), d(2002, 1, 2)) compare(date.today(), d(2002, 1, 3)) compare(date.today(), d(2002, 1, 5)) @replace('datetime.date', mock_date(None)) def test_add_date_supplied(self): from datetime import date date = cast(Type[MockDate], date) date.add(d(2001, 1, 2)) date.add(date(2001, 1, 3)) compare(date.today(), d(2001, 1, 2)) compare(date.today(), d(2001, 1, 3)) def test_instantiate_with_date(self): from datetime import date t = mock_date(date(2002, 1, 1)) compare(t.today(), d(2002, 1, 1)) @replace('datetime.date', mock_date(strict=True)) def test_call(self, t: Type[MockDate]): compare(t(2002, 1, 2), d(2002, 1, 2)) from datetime import date dt = date(2003, 2, 1) self.assertFalse(dt.__class__ is d) compare(dt, d(2003, 2, 1)) def test_gotcha_import(self): # standard `replace` caveat, make sure you # patch all revelent places where date # has been imported: @replace('datetime.date', mock_date()) def test_something(): from datetime import date compare(date.today(), d(2001, 1, 1)) compare(sample1.str_today_1(), '2001-01-02') with ShouldRaise(AssertionError) as s: test_something() # This convoluted check is because we can't stub # out the date, since we're testing stubbing out # the date ;-) j, dt1, j, dt2, j = s.raised.args[0].split("'") # check we can parse the date dt1 = strptime(dt1, '%Y-%m-%d') # check the dt2 bit was as it should be compare(dt2, '2001-01-02') # What you need to do is replace the imported type: @replace('testfixtures.tests.sample1.date', mock_date()) def test_something(): compare(sample1.str_today_1(), '2001-01-01') test_something() def test_gotcha_import_and_obtain(self): # Another gotcha is where people have locally obtained # a class attributes, where the normal patching doesn't # work: @replace('testfixtures.tests.sample1.date', mock_date()) def test_something(): compare(sample1.str_today_2(), '2001-01-01') with ShouldRaise(AssertionError) as s: test_something() # This convoluted check is because we can't stub # out the date, since we're testing stubbing out # the date ;-) j, dt1, j, dt2, j = s.raised.args[0].split("'") # check we can parse the date dt1 = strptime(dt1, '%Y-%m-%d') # check the dt2 bit was as it should be compare(dt2, '2001-01-01') # What you need to do is replace the imported name: @replace('testfixtures.tests.sample1.today', mock_date().today) def test_something(): compare(sample1.str_today_2(), '2001-01-01') test_something() # if you have an embedded `today` as above, *and* you need to supply # a list of required dates, then it's often simplest just to # do a manual try-finally with a replacer: def test_import_and_obtain_with_lists(self): t = mock_date(None) t.add(2002, 1, 1) t.add(2002, 1, 2) from testfixtures import Replacer r = Replacer() r.replace('testfixtures.tests.sample1.today', t.today) try: compare(sample1.str_today_2(), '2002-01-01') compare(sample1.str_today_2(), '2002-01-02') finally: r.restore() @replace('datetime.date', mock_date()) def test_repr(self): from datetime import date compare(repr(date), "") @replace('datetime.date', mock_date(delta=2)) def test_delta(self): from datetime import date compare(date.today(), d(2001, 1, 1)) compare(date.today(), d(2001, 1, 3)) compare(date.today(), d(2001, 1, 5)) @replace('datetime.date', mock_date(delta_type='weeks')) def test_delta_type(self): from datetime import date compare(date.today(), d(2001, 1, 1)) compare(date.today(), d(2001, 1, 8)) compare(date.today(), d(2001, 1, 22)) @replace('datetime.date', mock_date(None)) def test_set(self): from datetime import date date = cast(Type[MockDate], date) date.set(2001, 1, 2) compare(date.today(), d(2001, 1, 2)) date.set(2002, 1, 1) compare(date.today(), d(2002, 1, 1)) compare(date.today(), d(2002, 1, 3)) @replace('datetime.date', mock_date(None)) def test_set_date_supplied(self): from datetime import date date = cast(Type[MockDate], date) date.set(d(2001, 1, 2)) compare(date.today(), d(2001, 1, 2)) date.set(date(2001, 1, 3)) compare(date.today(), d(2001, 1, 3)) @replace('datetime.date', mock_date(None)) def test_set_kw(self): from datetime import date date = cast(Type[MockDate], date) date.set(year=2001, month=1, day=2) compare(date.today(), d(2001, 1, 2)) @replace('datetime.date', mock_date(None)) def test_add_kw(self, t: Type[MockDate]): t.add(year=2002, month=1, day=1) from datetime import date compare(date.today(), d(2002, 1, 1)) @replace('datetime.date', mock_date(strict=True)) def test_isinstance_strict_true(self): from datetime import date date = cast(Type[MockDate], date) to_check = [] to_check.append(date(1999, 1, 1)) to_check.append(date.today()) date.set(2001, 1, 2) to_check.append(date.today()) date.add(2001, 1, 3) to_check.append(date.today()) to_check.append(date.today()) date.set(date(2001, 1, 4)) to_check.append(date.today()) date.add(date(2001, 1, 5)) to_check.append(date.today()) to_check.append(date.today()) date.set(d(2001, 1, 4)) to_check.append(date.today()) date.add(d(2001, 1, 5)) to_check.append(date.today()) to_check.append(date.today()) for inst in to_check: self.assertTrue(isinstance(inst, date), inst) self.assertTrue(inst.__class__ is date, inst) self.assertTrue(isinstance(inst, d), inst) self.assertFalse(inst.__class__ is d, inst) def test_strict_addition(self): mock_d = mock_date(strict=True) dt = mock_d(2001, 1, 1) + timedelta(days=1) assert type(dt) is mock_d def test_non_strict_addition(self): from datetime import date mock_d = mock_date(strict=False) dt = mock_d(2001, 1, 1) + timedelta(days=1) assert type(dt) is date def test_strict_add(self): mock_d = mock_date(None, strict=True) mock_d.add(2001, 1, 1) assert type(mock_d.today()) is mock_d def test_non_strict_add(self): from datetime import date mock_d = mock_date(None, strict=False) mock_d.add(2001, 1, 1) assert type(mock_d.today()) is date @replace('datetime.date', mock_date()) def test_isinstance_default(self): from datetime import date date = cast(Type[MockDate], date) to_check = [] to_check.append(date(1999, 1, 1)) to_check.append(date.today()) date.set(2001, 1, 2) to_check.append(date.today()) date.add(2001, 1, 3) to_check.append(date.today()) to_check.append(date.today()) date.set(date(2001, 1, 4)) to_check.append(date.today()) date.add(date(2001, 1, 5)) to_check.append(date.today()) to_check.append(date.today()) date.set(d(2001, 1, 4)) to_check.append(date.today()) date.add(d(2001, 1, 5)) to_check.append(date.today()) to_check.append(date.today()) for inst in to_check: self.assertFalse(isinstance(inst, date), inst) self.assertFalse(inst.__class__ is date, inst) self.assertTrue(isinstance(inst, d), inst) self.assertTrue(inst.__class__ is d, inst) def test_tick_when_static(self): date = mock_date(delta=0) compare(date.today(), expected=d(2001, 1, 1)) date.tick(days=1) compare(date.today(), expected=d(2001, 1, 2)) def test_tick_when_dynamic(self): # hopefully not that common? date = mock_date() compare(date.today(), expected=date(2001, 1, 1)) date.tick(days=1) compare(date.today(), expected=date(2001, 1, 3)) def test_tick_with_timedelta_instance(self): date = mock_date(delta=0) compare(date.today(), expected=d(2001, 1, 1)) date.tick(timedelta(days=1)) compare(date.today(), expected=d(2001, 1, 2)) def test_old_import(self): from testfixtures import test_date assert test_date is mock_date