def testYearFracFeb29_2(self):
date1 = datetime.date(2000, 0o2, 29)
date2 = datetime.date(2000, 0o3, 0o1)
result = yearfrac(date1, date2)
expected = 1 / 365.0
self.assertEqual(expected, result)
def testYearFracAlmostFullYear(self):
date1 = datetime.date(2001, 0o1, 0o1)
date2 = datetime.date(2001, 12, 31)
result = yearfrac(date1, date2)
expected = 364 / 365.0
self.assertEqual(expected, result)
def testYearFrac1Year(self):
"""Test a bunch of cases where the two dates are separated by 1 year"""
for year in range(2000, 2020, 1):
date1 = datetime.date(year, 1, 1)
date2 = datetime.date(year + 1, 1, 1)
result = yearfrac(date1, date2)
self.assertEqual(1, result)
def testYearFrac1000Years(self):
date1 = datetime.date(2000, 0o1, 0o1)
date2 = datetime.date(3000, 0o1, 0o1)
result = yearfrac(date1, date2)
expected = 1000
self.assertEqual(expected, result)
def testYearFrac(self):
date1 = datetime.date(1987, 0o1, 12)
date2 = datetime.date(1988, 12, 0o1)
result = yearfrac(date1, date2)
expected = 1.885245
self.assertAlmostEqual(expected, result, 5)