def _singleParameterToJson(parameter: Parameter,
get: bool = False,
includeMeta: List[str] = [],
simpleFormat: bool = True) -> Dict:
"""Create a JSON representation of a parameter."""
ret = {parameter.name: None}
snap = parameter.snapshot(update=get)
if len(includeMeta) == 0 and simpleFormat:
ret[parameter.name] = snap.get('value', None)
else:
ret[parameter.name] = dict()
for k, v in snap.items():
if k in ['value'] + includeMeta:
ret[parameter.name][k] = v
return ret
def test_snapshot():
p = Parameter('testparam', set_cmd=None, get_cmd=None)
def divide_by_2(x):
return x / 2
c = ConversionParameter('test_delegate_parameter',
p,
lambda x: x * 2,
set_conv=divide_by_2,
initial_value=2)
snapshot = c.snapshot()
source_parameter_snapshot = snapshot.pop('source_parameter')
assert source_parameter_snapshot == p.snapshot()
assert snapshot['value'] == 2
assert source_parameter_snapshot['value'] == 1.0
assert divide_by_2.__name__ in snapshot['set_conversion']
assert 'lambda' in snapshot['get_conversion']
