def test_date2_date1(self):
self.assertEqual(
Date.date2_date1(Date(2020, 9, 20), Date(2010, 8, 10)),
f'3694 days between 20.9.2020 and 10.8.2010')
self.assertEqual(
Date.date2_date1(Date(2020, 1, 20), Date(2010, 8, 10)),
f'3450 days between 20.1.2020 and 10.8.2010')
self.assertEqual(
Date.date2_date1(Date(2020, 9, 20), Date(2019, 8, 10)),
f'407 days between 20.9.2020 and 10.8.2019')
self.assertEqual(
Date.date2_date1(Date(2020, 9, 20), Date(2020, 8, 10)),
f'41 days between 20.9.2020 and 10.8.2020')
self.assertEqual(
Date.date2_date1(Date(2020, 9, 20), Date(2020, 8, 30)),
f'21 days between 20.9.2020 and 30.8.2020')
self.assertEqual(
Date.date2_date1(Date(2020, 9, 20), Date(2020, 9, 10)),
f'10 days between 20.9.2020 and 10.9.2020')
self.assertEqual(
Date.date2_date1(Date(2020, 9, 20), Date(2020, 9, 20)),
f'0 days between 20.9.2020 and 20.9.2020')
self.assertRaises(ValueError, Date.date2_date1, Date(2020, 9, 20),
Date(2020, 9, 30))