def test_time_from_mjd_string_accuracy_vs_longdouble(format, i_f):
i, f = i_f
mjd = np.longdouble(i) + np.longdouble(f)
assume(not (format == "pulsar_mjd" and i in leap_sec_days and
(1 - f) * 86400 < 1e-9))
s = str(mjd)
t = Time(val=i, val2=f, format=format, scale="utc")
assert (abs(time_from_mjd_string(s, format=format, scale="utc") - t).to(
u.us) < 1 * u.us)
if 40000 <= i <= 60000:
assert (abs(time_from_mjd_string(s, format=format, scale="utc") -
t).to(u.us) < 1 * u.ns)
def test_time_from_mjd_string_versus_longdouble_tai(i_f):
i, f = i_f
m = np.longdouble(i) + np.longdouble(f)
s = str(m)
assert (abs(
time_from_mjd_string(s, scale="tai") -
time_from_longdouble(m, scale="tai")).to(u.ns) < 1 * u.ns)
def test_time_from_mjd_string_roundtrip(format, i_f):
i, f = i_f
assume(not (format == "pulsar_mjd" and i in leap_sec_days and
(1 - f) * 86400 < 1e-9))
t = Time(val=i, val2=f, format=format, scale="utc")
assert (
abs(t - time_from_mjd_string(time_to_mjd_string(t), format=format)).to(
u.ns) < 1 * u.ns)
def test_time_from_mjd_string_versus_longdouble_utc(format, i_f):
i, f = i_f
m = np.longdouble(i) + np.longdouble(f)
s = str(m)
assert (abs(
time_from_mjd_string(s, scale="utc", format=format) -
time_from_longdouble(s, scale="utc", format=format)).to(u.ns) <
1 * u.ns)
def test_time_from_mjd_string_rejects_other_formats():
with pytest.raises(ValueError):
time_from_mjd_string("58000", format="cxcsec")
def test_time_from_mjd_string_roundtrip_very_close(format):
i = 50000
f = np.finfo(float).eps
t = Time(val=i, val2=f, format=format, scale="utc")
s = time_to_mjd_string(t)
assert abs(time_from_mjd_string(s) - t).to(u.ns) <= 4 * time_eps
