def test_from_altaz_parameters():
usno = api.earth.topos('38.9215 N', '77.0669 W', elevation_m=92.0)
p = usno(tt=api.T0)
a = api.Angle(degrees=10.0)
with assert_raises(ValueError, 'the alt= parameter with an Angle'):
p.from_altaz(alt='Bad value', alt_degrees=0, az_degrees=0)
with assert_raises(ValueError, 'the az= parameter with an Angle'):
p.from_altaz(az='Bad value', alt_degrees=0, az_degrees=0)
p.from_altaz(alt=a, alt_degrees='bad', az_degrees=0)
p.from_altaz(az=a, alt_degrees=0, az_degrees='bad')
def test_from_altaz_parameters(ts):
e = api.load('de421.bsp')
usno = e['earth'].topos('38.9215 N', '77.0669 W', elevation_m=92.0)
jd = ts.tt(api.T0)
p = usno.at(jd)
a = api.Angle(degrees=10.0)
with assert_raises(ValueError, 'the alt= parameter with an Angle'):
p.from_altaz(alt='Bad value', alt_degrees=0, az_degrees=0)
with assert_raises(ValueError, 'the az= parameter with an Angle'):
p.from_altaz(az='Bad value', alt_degrees=0, az_degrees=0)
p.from_altaz(alt=a, alt_degrees='bad', az_degrees=0)
p.from_altaz(az=a, alt_degrees=0, az_degrees='bad')
def test_tuple_error_raised():
def fake_function():
""" The decorator requires a docstring. """
decorated_function = takes_julian_date(fake_function)
tuple_argument = (2014, 1, 23)
self = None
with assert_raises(ValueError) as info:
decorated_function(self, tuple_argument)
assert 'Are you trying to pass in a tuple' in str(info.exception)
def test_iterating_over_raw_velocity():
velocity = units.Velocity(au_per_d=1.234)
with assert_raises(units.UnpackingError):
x, y, z = velocity
def test_bad_addition():
planets = load('de421.bsp')
earth = planets['earth']
mars = planets['mars']
with assert_raises(ValueError, 'the center where the other vector starts'):
earth + mars
def test_sending_jd_that_is_not_a_julian_date():
earth = api.load('de421.bsp')['earth']
with assert_raises(ValueError, 'your "jd" argument is not a JulianDate: '):
earth.at('blah')
def test_named_star_throws_valueerror():
with assert_raises(ValueError, 'No star named foo known to skyfield'):
api.NamedStar('foo')
def test_that_building_time_from_naive_datetime_raises_exception(ts):
with assert_raises(ValueError) as info:
ts.from_datetime(datetime(1973, 12, 29, 23, 59, 48))
assert 'import timezone' in str(info.exception)
def test_raises3():
with assert_raises(ValueError, 'correct message but wrong exception'):
raise KeyError('correct message but wrong exception')
def test_building_JulianDate_from_naive_datetime_raises_exception():
with assert_raises(ValueError) as info:
JulianDate(utc=datetime(1973, 12, 29, 23, 59, 48))
assert 'import timezone' in str(info.exception)
def test_build_url(load):
url = 'ftp://ssd.jpl.nasa.gov/pub/eph/planets/bsp/de421.bsp'
assert load.build_url('de421.bsp') == url
with assert_raises(ValueError, 'know the URL'):
load.build_url('unknown.kind.of.file')
def test_altaz_needs_topos(ts):
e = api.load('de421.bsp')
earth = e['earth']
moon = e['moon']
with assert_raises(ValueError, 'using a Topos instance'):
earth.at(ts.utc(2016)).observe(moon).apparent().altaz()
def test_iterating_over_raw_angle():
angle = Angle(degrees=4.5)
with assert_raises(ValueError) as a:
iter(angle)
assert str(a.exception) == '''choose a specific Angle unit to iterate over
def test_iterating_over_raw_velocity():
velocity = Velocity(au_per_d=1.234)
with assert_raises(UnpackingError) as a:
x, y, z = velocity
assert str(a.exception) == '''\
def test_iterating_over_raw_measurement():
distance = Distance(au=1.234)
with assert_raises(UnpackingError) as a:
x, y, z = distance
assert str(a.exception) == '''\
def test_sending_jd_that_is_not_a_julian_date():
with assert_raises(ValueError, 'your "jd" argument is not a JulianDate: '):
api.earth('blah')
def test_from_altaz_needs_topos():
p = positionlib.ICRF([0.0, 0.0, 0.0])
with assert_raises(ValueError, 'to compute an altazimuth position'):
p.from_altaz(alt_degrees=0, az_degrees=0)
def test_sending_jd_that_is_not_a_julian_date():
return # TODO: turn this back on, using one of the new ts method calls
earth = api.load('de421.bsp')['earth']
with assert_raises(ValueError, 'your "jd" argument is not a JulianDate: '):
earth.at('blah')
def test_iterating_over_raw_measurement():
distance = units.Distance(au=1.234)
with assert_raises(units.UnpackingError):
x, y, z = distance
def test_raises1():
with assert_raises(ValueError):
raise ValueError('irrelevant message')
def test_bad_addition():
planets = load('de421.bsp')
earth = planets['earth']
mars = planets['mars']
with assert_raises(ValueError, 'the center where the other vector starts'):
earth + mars
def test_iterating_over_raw_velocity():
velocity = units.Velocity(au_per_d=1.234)
with assert_raises(units.UnpackingError):
x, y, z = velocity
def test_raises2():
with assert_raises(ValueError, 'correct message'):
raise ValueError('correct message')
def test_sending_jd_that_is_not_a_julian_date():
return # TODO: turn this back on, using one of the new ts method calls
earth = api.load('de421.bsp')['earth']
with assert_raises(ValueError, 'your "jd" argument is not a JulianDate: '):
earth.at('blah')
def test_raises4():
with assert_raises(ValueError, 'one message'):
raise ValueError('another message')
def test_sending_jd_that_is_not_a_julian_date():
with assert_raises(ValueError, 'your "jd" argument is not a JulianDate: '):
api.earth('blah')
def test_from_altaz_needs_topos():
p = positionlib.ICRF([0.0, 0.0, 0.0])
with assert_raises(ValueError, 'the orientation of the horizon'):
p.from_altaz(alt_degrees=0, az_degrees=0)
def test_altaz_needs_topos(ts):
e = api.load('de421.bsp')
earth = e['earth']
moon = e['moon']
with assert_raises(ValueError, 'from a specific Earth location'):
earth.at(ts.utc(2016)).observe(moon).apparent().altaz()
def test_building_JulianDate_from_naive_datetime_raises_exception():
with assert_raises(ValueError) as info:
JulianDate(utc=datetime(1973, 12, 29, 23, 59, 48))
assert "import timezone" in str(info.exception)
def test_raises4():
with assert_raises(ValueError, 'one message'):
raise ValueError('another message')
def test_bad_subtraction():
planets = load('de421.bsp')
earth = planets['earth']
usno = Topos('38.9215 N', '77.0669 W', elevation_m=92.0)
with assert_raises(ValueError, 'if they both start at the same center'):
earth - usno
def test_raises1():
with assert_raises(ValueError):
raise ValueError('irrelevant message')
def test_iterating_over_raw_measurement():
distance = units.Distance(au=1.234)
with assert_raises(units.UnpackingError):
x, y, z = distance
def test_raises2():
with assert_raises(ValueError, 'correct message'):
raise ValueError('correct message')
def test_that_building_time_from_naive_datetime_raises_exception(ts):
with assert_raises(ValueError) as info:
ts.utc(datetime(1973, 12, 29, 23, 59, 48))
assert 'import timezone' in str(info.exception)
def test_raises3():
with assert_raises(ValueError, 'correct message but wrong exception'):
raise KeyError('correct message but wrong exception')
def test_from_altaz_needs_topos():
p = positionlib.ICRS([0.0, 0.0, 0.0])
with assert_raises(ValueError, 'the orientation of the horizon'):
p.from_altaz(alt_degrees=0, az_degrees=0)
def test_bad_subtraction():
planets = load('de421.bsp')
earth = planets['earth']
usno = Topos('38.9215 N', '77.0669 W', elevation_m=92.0)
with assert_raises(ValueError, 'if they both start at the same center'):
earth - usno
def test_named_star_throws_valueerror():
with assert_raises(ValueError, 'No star named foo known to skyfield'):
api.NamedStar('foo')
def test_non_builtin_timescale_tries_to_load_finals2000A_all(load):
save_file(load, 'finals2000A.all', b'invalid data')
with assert_raises(IndexError):
load.timescale(builtin=False)