def __init__(self,
name,
acquisition_parameter=None,
discriminant=None,
silent=True,
**kwargs):
SettingsClass.__init__(self)
MultiParameter.__init__(self, name, snapshot_value=False, **kwargs)
if self.layout is None:
try:
MeasurementParameter.layout = Instrument.find_instrument(
'layout')
except KeyError:
logger.warning(f'No layout found for {self}')
self.discriminant = discriminant
self.silent = silent
self.acquisition_parameter = acquisition_parameter
self._meta_attrs.extend(['acquisition_parameter_name'])
def test_has_set_get(self):
name = 'mixed_dimensions'
names = ['0D', '1D', '2D']
shapes = ((), (3, ), (2, 2))
with self.assertRaises(AttributeError):
MultiParameter(name, names, shapes)
p = SimpleMultiParam([0, [1, 2, 3], [[4, 5], [6, 7]]], name, names,
shapes)
self.assertTrue(hasattr(p, 'get'))
self.assertFalse(hasattr(p, 'set'))
# We allow creation of Multiparameters with set to support
# instruments that already make use of them.
with self.assertWarns(UserWarning):
SettableMulti([0, [1, 2, 3], [[4, 5], [6, 7]]], name, names,
shapes)
def test_has_set_get():
name = 'mixed_dimensions'
names = ['0D', '1D', '2D']
shapes = ((), (3,), (2, 2))
with pytest.raises(AttributeError):
MultiParameter(name, names, shapes)
original_value = [0, [1, 2, 3], [[4, 5], [6, 7]]]
p = SimpleMultiParam(original_value, name, names, shapes)
assert hasattr(p, 'get')
assert p.gettable
assert not hasattr(p, 'set')
assert not p.settable
# Ensure that ``cache.set`` works
new_cache = [10, [10, 20, 30], [[40, 50], [60, 70]]]
p.cache.set(new_cache)
assert p.get_latest() == new_cache
# However, due to the implementation of this ``SimpleMultiParam``
# test parameter it's ``get`` call will return the originally passed
# list
assert p.get() == original_value
assert p.get_latest() == original_value
# We allow creation of Multiparameters with set to support
# instruments that already make use of them.
p = SettableMulti([0, [1, 2, 3], [[4, 5], [6, 7]]], name, names, shapes)
assert hasattr(p, 'get')
assert p.gettable
assert hasattr(p, 'set')
assert p.settable
value_to_set = [2, [1, 5, 2], [[8, 2], [4, 9]]]
p.set(value_to_set)
assert p.get() == value_to_set
# Also, ``cache.set`` works as expected
p.cache.set(new_cache)
assert p.get_latest() == new_cache
assert p.get() == value_to_set