def test_full_phase(center, npoints):
params = {"semi_amp": 1, "period": 15, "tau": 2400000, "omega": 0, "ecc": 0.1}
rv1 = RV(**params).rv_full_phase(center, npoints)
rv2 = RV(**params).rv_full_phase(center + 1, npoints)
assert len(rv1) == npoints
assert np.allclose(rv1, rv2)
assert np.allclose(rv1[0], rv1[-1])
def test_set_ignore_mean():
rv = RV()
assert rv.ignore_mean is False
rv.ignore_mean = True
assert rv.ignore_mean is True
rv.ignore_mean = False
assert rv.ignore_mean is False
def test_create_companion():
host = RV(semi_amp=1, m1=10, m2=5)
companion = host.create_companion()
assert companion.semi_amp == -host.semi_amp * host._params["m1"] / host._params["m2"]
assert companion._params["k2"] == host._params["k1"]
assert companion._params["k1"] == companion.semi_amp
def test_create_companion_with_k2(k2):
host = RV(semi_amp=1, m1=10, m2=5, k2=k2)
companion = host.create_companion()
assert companion.semi_amp == k2 # does not depend on m1 and m2 if k2 given
assert companion._params["k2"] == host._params["k1"]
assert companion._params["k1"] == companion.semi_amp
def test_double_create_companion_returns_host():
host = RV(semi_amp=1, m1=10, m2=5)
companion = host.create_companion()
host_2 = companion.create_companion()
assert host_2.semi_amp == host.semi_amp
assert host == host_2
assert host != companion
def test_double_create_companion_with_ratio_returns_host(mass_ratio):
host = RV(semi_amp=1, m1=10, m2=5)
print("host parsm", host._params)
companion = host.create_companion(mass_ratio=mass_ratio)
print("comp params", companion._params)
host_2 = companion.create_companion(1.0 / mass_ratio)
print("host_2 params", host_2._params)
assert host_2.semi_amp == host.semi_amp
assert host == host_2
assert host != companion
def test_create_companion_with_mass_ratio(semi_amp, mass_ratio):
host = RV(semi_amp=1, k1=1, m1=10, m2=5)
print("host params", host._params)
companion = host.create_companion(mass_ratio=mass_ratio)
print("companion params", companion._params)
assert companion.semi_amp == (- host.semi_amp * mass_ratio)
assert host.period == companion.period
assert host.gamma == companion.gamma
assert host.ecc == companion.ecc
assert host.tau == companion.tau
assert companion._params["k2"] == host._params["k1"]
assert companion._params["k1"] == companion.semi_amp
def test_RV_to_dict_updates_parameters_in_params():
rv = RV(semi_amp=1.0, period=3, tau=4, omega=5, ecc=0.5, mean_val=8, ignore_mean=True)
assert rv.ignore_mean == True
assert rv._params["ignore_mean"] == True
assert rv.semi_amp == 1.0
# _params not updated (yet)
rv.semi_amp = 2
rv.ignore_mean = False
assert rv._params["k1"] == 1
assert rv._params["ignore_mean"] == True
assert rv.ignore_mean == False
# RV.to_dict() updates _params
param_dict = rv.to_dict()
assert param_dict["ignore_mean"] == False
assert rv._params["ignore_mean"] == False
assert rv.semi_amp == 2
assert param_dict["k1"] == 2
assert rv._params["k1"] == 2
def test_rv_object_instance_of_rv_class():
rv = RV()
assert isinstance(rv, RV)
def test_rv_class_max_amp_on_elipse(semi_amp, period, ecc, tau, gamma, omega, expected_amp):
rv = RV(semi_amp, period, ecc, tau, gamma, omega)
assert rv.max_amp() <= abs(semi_amp * (1 + ecc)) # omega = 0, 2pi etc
assert rv.max_amp() == expected_amp
def test_rv_class_max_amp_on_circle(semi_amp, period, tau, gamma, omega):
ecc = 0
rv = RV(semi_amp, period, ecc, tau, gamma, omega)
assert rv.max_amp() == semi_amp
def test_RV_can_handle_ignore_mean_as_input(ignore):
rv = RV(ignore_mean=ignore)
assert rv.ignore_mean == ignore
assert rv._params["ignore_mean"] == ignore
assert "ignore_mean" in rv.to_dict().keys()
def test_companion_without_mass_gives_errors():
rv = RV()
with pytest.raises(ValueError):
# Needs mass parameters
rv.create_companion()
def test__repr__():
rv = RV(semi_amp=1.0, period=1, omega=35, k2=7, m1=0.81, tau=3561.51)
assert isinstance(rv.__repr__(), str)
assert rv.__repr__() == "RV(semi_amp=1.0, period=1, ecc=0.0, tau=3561.51, omega=35, gamma=0.0, k2=7, m1=0.81)"
assert RV().__repr__() == "RV(semi_amp=0.0, period=0.0, ecc=0.0, tau=0.0, omega=0.0, gamma=0.0)"
def test_companion_label_with_no_flags():
assert generate_companion_label(RV()) == "M2 Companion"
def test_generate_companion_label(msini_flag, k2_flag, ratio_flag, expected):
orbit = RV(msini_flag=msini_flag, k2_flag=k2_flag, ratio_flag=ratio_flag)
assert generate_companion_label(orbit) == expected