def test_from_json(self):
x = Value.from_json({'__value__': {'value': 25.0, 'units': 'cm'}})
self.assertEqual(x.value, 25.0)
self.assertEqual(x.units, 'cm')
def decode_value(self, dct):
from blmath.value import Value
if "__value__" in dct.keys():
return Value.from_json(dct)
