| from pytest import raises | |
| from astropy.tests.helper import assert_quantity_allclose | |
| from astropy import units as u | |
| from astropy.wcs.wcsapi.utils import deserialize_class | |
| def test_construct(): | |
| result = deserialize_class(('astropy.units.Quantity', (10,), {'unit': 'deg'})) | |
| assert_quantity_allclose(result, 10 * u.deg) | |
| def test_noconstruct(): | |
| result = deserialize_class(('astropy.units.Quantity', (), {'unit': 'deg'}), construct=False) | |
| assert result == (u.Quantity, (), {'unit': 'deg'}) | |
| def test_invalid(): | |
| with raises(ValueError) as exc: | |
| deserialize_class(('astropy.units.Quantity', (), {'unit': 'deg'}, ())) | |
| assert exc.value.args[0] == 'Expected a tuple of three values' | |