def test_jd_to_struct_time(self):
# Check conversion of Julian Date number to AD date & time
jd_ad = 2458227.9263194446 # As in `test_struct_time_to_jd`
st_ad = struct_time([2018, 4, 19] + [10, 13, 54] +
convert.TIME_EMPTY_EXTRAS)
self.assertEqual(st_ad, convert.jd_to_struct_time(jd_ad))
# Check conversion of Julian Date number to BC date & time
# WARNING: Converted time is off by 1 second, 53 not 54
jd_bc = 984091.9263194444 # As in `test_struct_time_to_jd`
st_bc = struct_time([-2018, 4, 19] + [10, 13, 54 - 1] +
convert.TIME_EMPTY_EXTRAS)
self.assertEqual(st_bc, convert.jd_to_struct_time(jd_bc))
def test_jd_to_struct_time(self):
# Check conversion of Julian Date number to AD date & time
jd_ad = 2458227.9263194446 # As in `test_struct_time_to_jd`
st_ad = struct_time(
[2018, 4, 19] + [10, 13, 54] + convert.TIME_EMPTY_EXTRAS)
self.assertEqual(st_ad, convert.jd_to_struct_time(jd_ad))
# Check conversion of Julian Date number to BC date & time
# WARNING: Converted time is off by 1 second, 53 not 54
jd_bc = 984091.9263194444 # As in `test_struct_time_to_jd`
st_bc = struct_time(
[-2018, 4, 19] + [10, 13, 54 - 1] + convert.TIME_EMPTY_EXTRAS)
self.assertEqual(st_bc, convert.jd_to_struct_time(jd_bc))
def test_jd_round_trip_for_2_bc(self):
original_st = struct_time(
[-1, 12, 5] + [4, 58, 59] + convert.TIME_EMPTY_EXTRAS)
converted_st = convert.jd_to_struct_time(
convert.struct_time_to_jd(original_st))
self.assertEqual(
(-1, 12, 5, 4, 58, 59, 0, 0, -1),
tuple(converted_st))
def test_jd_round_trip_for_extreme_future(self):
original_st = struct_time([999999, 8, 4] + [21, 15, 3] +
convert.TIME_EMPTY_EXTRAS)
jd = convert.struct_time_to_jd(original_st)
converted_st = convert.jd_to_struct_time(jd)
# Confirm that year, month, day, hour, minute are correct (not second)
self.assertEqual(original_st[:5], converted_st[:5])
# WARNING: Seconds are off by 1, should be 3 but is 2
self.assertEqual(3 - 1, converted_st[5])
def test_jd_round_trip_for_extreme_future(self):
original_st = struct_time(
[999999, 8, 4] + [21, 15, 3] + convert.TIME_EMPTY_EXTRAS)
jd = convert.struct_time_to_jd(original_st)
converted_st = convert.jd_to_struct_time(jd)
# Confirm that year, month, day, hour, minute are correct (not second)
self.assertEqual(original_st[:5], converted_st[:5])
# WARNING: Seconds are off by 1, should be 3 but is 2
self.assertEqual(3 - 1, converted_st[5])
def test_jd_round_trip_for_extreme_past(self):
original_st = struct_time(
[-999999, 8, 4] + [21, 15, 3] + convert.TIME_EMPTY_EXTRAS)
converted_st = convert.jd_to_struct_time(
convert.struct_time_to_jd(original_st))
# WARNING: We have lost a year of accuracy
self.assertEqual(
(-999999 + 1, # Year off by 1
8, 4, 21, 15, 3, 0, 0, -1),
tuple(converted_st))
def test_jd_round_trip_for_extreme_past(self):
original_st = struct_time([-999999, 8, 4] + [21, 15, 3] +
convert.TIME_EMPTY_EXTRAS)
converted_st = convert.jd_to_struct_time(
convert.struct_time_to_jd(original_st))
# WARNING: We have lost a year of accuracy
self.assertEqual(
(
-999999 + 1, # Year off by 1
8,
4,
21,
15,
3,
0,
0,
-1),
tuple(converted_st))
def test_jd_round_trip_for_2_bc(self):
original_st = struct_time([-1, 12, 5] + [4, 58, 59] +
convert.TIME_EMPTY_EXTRAS)
converted_st = convert.jd_to_struct_time(
convert.struct_time_to_jd(original_st))
self.assertEqual((-1, 12, 5, 4, 58, 59, 0, 0, -1), tuple(converted_st))