def test_validate_specific():
"""Test method ``validate`` for specific values."""
value = default_cosmology.validate(None)
assert value is realizations.Planck18
with pytest.warns(AstropyDeprecationWarning) as e:
value = default_cosmology.validate("Planck18_arXiv_v2")
assert "use Planck18 instead" in str(e.list[0].message)
assert value is realizations.Planck18_arXiv_v2
with pytest.raises(TypeError) as e:
default_cosmology.validate(TypeError)
assert "string or Cosmology instance" in str(e.value)
def test_validate_fail(self):
"""Test :meth:`astropy.cosmology.default_cosmology.validate`."""
# bad input type
with pytest.raises(TypeError, match="must be a string or Cosmology"):
default_cosmology.validate(TypeError)
# a not-valid option, but still a str
with pytest.raises(ValueError, match="Unknown cosmology"):
default_cosmology.validate("fail!")
# a not-valid type
with pytest.raises(TypeError, match="cannot find a Cosmology"):
default_cosmology.validate("available")
def test_validate_no_default(self):
"""Test :meth:`astropy.cosmology.default_cosmology.get` to `None`."""
cosmo = default_cosmology.validate("no_default")
assert cosmo is None
def test_validate_cosmo(self, name):
"""Test method ``validate`` for cosmology instance input."""
cosmo = getattr(realizations, name)
value = default_cosmology.validate(cosmo)
assert value is cosmo
def test_validate_str(self, name):
"""Test method ``validate`` for string input."""
value = default_cosmology.validate(name)
assert value is getattr(realizations, name)
def test_validate_default(self):
"""Test method ``validate`` for specific values."""
value = default_cosmology.validate(None)
assert value is realizations.Planck18
def test_get_current(self):
"""Test :meth:`astropy.cosmology.default_cosmology.get` current value."""
cosmo = default_cosmology.get()
assert cosmo is default_cosmology.validate(default_cosmology._value)
def test_validate_fail(self):
"""Test :meth:`astropy.cosmology.default_cosmology.validate`."""
# bad input type
with pytest.raises(TypeError, match="must be a string or Cosmology"):
default_cosmology.validate(TypeError)
