def test_celprm_init():
# test PyCelprm_cnew
assert wcs.WCS().wcs.cel
# test PyCelprm_new
assert wcs.Celprm()
with pytest.raises(wcs.InvalidPrjParametersError):
cel = wcs.Celprm()
cel.set()
# test deletion does not crash
cel = wcs.Celprm()
del cel
def test_celprm_copy():
# shallow copy
cel = wcs.Celprm()
cel2 = copy(cel)
cel3 = copy(cel2)
cel.ref = [6, 8, 18, 3]
assert (np.allclose(cel.ref, cel2.ref, atol=1e-12, rtol=0)
and np.allclose(cel.ref, cel3.ref, atol=1e-12, rtol=0))
del cel, cel2, cel3
# deep copy
cel = wcs.Celprm()
cel2 = deepcopy(cel)
cel.ref = [6, 8, 18, 3]
assert not np.allclose(cel.ref, cel2.ref, atol=1e-12, rtol=0)
del cel, cel2
def test_celprm_euler():
cel = wcs.Celprm()
cel.prj.code = 'TAN'
cel.set()
assert np.allclose(cel.euler, [0.0, 90.0, 180.0, 0.0, 1.0],
atol=1e-12,
rtol=0)
def test_celprm_ref():
cel = wcs.Celprm()
cel.prj.code = 'TAN'
cel.set()
assert np.allclose(cel.ref, [0.0, 0.0, 180.0, 0.0], atol=1e-12, rtol=0)
cel.phi0 = 2.0
cel.theta0 = 4.0
cel.ref = [123, 12]
cel.set()
assert np.allclose(cel.ref, [123.0, 12.0, 2, 82], atol=1e-12, rtol=0)
cel.ref = [None, 13, None, None]
assert np.allclose(cel.ref, [123.0, 13.0, 2, 82], atol=1e-12, rtol=0)
def test_celprm_phi0():
cel = wcs.Celprm()
cel.prj.code = 'TAN'
assert cel.phi0 == None
assert cel._flag == 0
cel.set()
assert cel.phi0 == 0.0
cel.phi0 = 0.0
assert cel._flag
cel.phi0 = 2.0
assert cel._flag == 0
cel.phi0 = None
assert cel.phi0 == None
assert cel._flag == 0
def test_celprm_theta0():
cel = wcs.Celprm()
cel.prj.code = 'TAN'
assert cel.theta0 == None
assert cel._flag == 0
cel.theta0 = 4.0
cel.set()
assert cel.theta0 == 4.0
cel.theta0 = 4.0
assert cel._flag
cel.theta0 = 8.0
assert cel._flag == 0
cel.theta0 = None
assert cel.theta0 == None
assert cel._flag == 0
def test_celprm_prj():
cel = wcs.Celprm()
assert cel.prj is not None
cel.prj.code = 'TAN'
cel.set()
assert cel._flag
def test_celprm_offset():
cel = wcs.Celprm()
assert not cel.offset
cel.offset = True
assert cel.offset
def test_celprm_latpreq():
cel = wcs.Celprm()
cel.prj.code = 'TAN'
cel.set()
assert cel.latpreq == 0
def test_celprm_isolat():
cel = wcs.Celprm()
cel.prj.code = 'TAN'
cel.set()
assert cel.isolat == 0