def test_basis_to_from_json():
basis = Basis.primitive("X")
json_data = basis.to_json()
res = Basis.from_json(json_data)
assert len(basis) == len(res) == 1
assert res[0][0] == basis[0][0]
assert np.array_equal(res[0][1], basis[0][1])
def from_json(cls, s: str) -> 'UnitCell':
"""Initializes from a JSON string."""
# load dict from JSON string
data = orjson.loads(s)
# validate type
_type = data.pop("type")
if _type != cls.__name__:
raise TypeError(f"cannot deserialize from type `{_type}`")
# process topology
topology = Topology.from_json(orjson.dumps(data["topology"]))
# process basis
basis = Basis.from_json(orjson.dumps(data["basis"]))
# process lattice parameters
lattice_parameters = LatticeParameters.from_json(
orjson.dumps(data["lattice_parameters"]))
# process spacegroup
spacegroup = Spacegroup.from_json(orjson.dumps(data["spacegroup"]))
# return instance
return cls(basis,
lattice_parameters,
spacegroup,
_graph=topology._graph)