def test_parameter_setter_from_automatic_repetition(self, params):
"""Test getting and setting of the nlocal parameters."""
circuit = QuantumCircuit(2)
circuit.ry(Parameter('a'), 0)
circuit.crx(Parameter('b'), 0, 1)
# repeat circuit and check that parameters are duplicated
reps = 3
nlocal = NLocal(2, entanglement_blocks=circuit, reps=reps)
nlocal.assign_parameters(params, inplace=True)
param_set = set(p for p in params if isinstance(p, ParameterExpression))
with self.subTest(msg='Test the parameters of the non-transpiled circuit'):
# check the parameters of the final circuit
self.assertEqual(nlocal.parameters, param_set)
with self.subTest(msg='Test the parameters of the transpiled circuit'):
basis_gates = ['id', 'u1', 'u2', 'u3', 'cx']
transpiled_circuit = transpile(nlocal, basis_gates=basis_gates)
self.assertEqual(transpiled_circuit.parameters, param_set)
def test_repetetive_parameter_setting(self):
"""Test alternate setting of parameters and circuit construction."""
x = Parameter('x')
circuit = QuantumCircuit(1)
circuit.rx(x, 0)
nlocal = NLocal(1, entanglement_blocks=circuit, reps=3, insert_barriers=True)
with self.subTest(msg='immediately after initialization'):
self.assertEqual(len(nlocal.parameters), 3)
with self.subTest(msg='after circuit construction'):
self.assertEqual(len(nlocal.parameters), 3)
q = Parameter('q')
nlocal.assign_parameters([x, q, q], inplace=True)
with self.subTest(msg='setting parameter to Parameter objects'):
self.assertEqual(nlocal.parameters, set({x, q}))
nlocal.assign_parameters([0, -1], inplace=True)
with self.subTest(msg='setting parameter to numbers'):
self.assertEqual(nlocal.parameters, set())
def test_parameters_setter(self, params):
"""Test setting the parameters via list."""
# construct circuit with some parameters
initial_params = ParameterVector('p', length=6)
circuit = QuantumCircuit(1)
for i, initial_param in enumerate(initial_params):
circuit.ry(i * initial_param, 0)
# create an NLocal from the circuit and set the new parameters
nlocal = NLocal(1, entanglement_blocks=circuit, reps=1)
nlocal.assign_parameters(params, inplace=True)
param_set = set(p for p in params if isinstance(p, ParameterExpression))
with self.subTest(msg='Test the parameters of the non-transpiled circuit'):
# check the parameters of the final circuit
self.assertEqual(nlocal.parameters, param_set)
with self.subTest(msg='Test the parameters of the transpiled circuit'):
basis_gates = ['id', 'u1', 'u2', 'u3', 'cx']
transpiled_circuit = transpile(nlocal, basis_gates=basis_gates)
self.assertEqual(transpiled_circuit.parameters, param_set)