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_reps_setter_when_negative(self):
"""Test to check if setter raises error for reps <=0"""
nlocal = NLocal(reps=1)
with self.assertRaises(ValueError):
nlocal.reps = -1
def test_if_reps_is_zero(self):
"""Test to check if error is raised for 0 or negative value of reps"""
with self.assertRaises(ValueError):
_ = NLocal(reps=-1)
def test_if_reps_is_npint64(self):
"""Equality test for reps with int value and np.int64 value"""
self.assertEqual(NLocal(reps=3), NLocal(reps=np.int64(3)))
def test_if_reps_is_float(self):
"""Test to check if proper error is raised for float value of reps"""
with self.assertRaises(TypeError):
_ = NLocal(reps=5.6)
def test_if_reps_is_str(self):
"""Test to check if proper error is raised for str value of reps"""
with self.assertRaises(TypeError):
_ = NLocal(reps="3")
