class InitDeviceTests(BaseTest):
"""Tests for device loader in __init__.py"""
def test_no_device(self):
"""Test exception raised for a device that doesn't exist"""
self.logTestName()
with self.assertRaisesRegex(qml.DeviceError, 'Device does not exist'):
qml.device('None', wires=0)
@patch.object(qml, 'version', return_value='0.0.1')
def test_outdated_API(self, n):
"""Test exception raised if plugin that targets an old API is loaded"""
self.logTestName()
with self.assertRaisesRegex(qml.DeviceError,
'plugin requires PennyLane versions'):
qml.device('default.qubit', wires=0)
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() + ', Device class.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (DeviceTest, InitDeviceTests):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
num_params = 1
par_domain = 'N'
grad_method = None
with self.assertRaisesRegex(ValueError, "Must specify the wires"):
DummyOp(0.54, 0, do_queue=False)
def test_observable_return_type_none(self):
"""Check that the return_type of an observable is initially None"""
self.logTestName()
class DummyObserv(qml.operation.Observable):
r"""Dummy custom observable"""
num_wires = 1
num_params = 1
par_domain = 'N'
grad_method = None
self.assertEqual(
DummyObserv(0, wires=[1], do_queue=False).return_type, None)
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() + ', Operation class.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (BasicTest, DeveloperTests):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
@qml.qnode(dev)
def circuit(x, target_observable=None):
qml.RX(x[0], wires=0)
qml.RY(x[1], wires=0)
qml.RZ(x[2], wires=0)
qml.CNOT(wires=[0, 1])
return qml.expval(qml.Hermitian(target_observable, wires=[0, 1]))
target_state = 1 / np.sqrt(2) * np.array([1, 0, 0, 1])
target_herm_op = np.outer(target_state.conj(), target_state)
weights = np.array([0.5, 0.1, 0.2])
expval = circuit(weights, target_observable=target_herm_op)
self.assertAlmostEqual(expval, 0.590556, delta=self.tol)
if __name__ == "__main__":
print("Testing PennyLane version " + qml.version() +
", default.qubit plugin.")
# run the tests in this file
suite = unittest.TestSuite()
for t in (
TestAuxillaryFunctions,
TestStateFunctions,
TestDefaultQubitDevice,
TestDefaultQubitIntegration,
):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
def test_not_natural_param(self):
"""Test that an exception is raised if a natural number is expected but not passed"""
self.logTestName()
class DummyOp(oo.Operation):
r"""Dummy custom operation"""
num_wires = 1
num_params = 1
par_domain = 'N'
grad_method = None
with self.assertRaisesRegex(TypeError,
"Natural number parameter expected, got"):
op = DummyOp(0.5, wires=[0], do_queue=False)
with self.assertRaisesRegex(TypeError,
"Natural number parameter expected, got"):
op = DummyOp(-2, wires=[0], do_queue=False)
if __name__ == '__main__':
print('Testing PennyLane version ' + pennylane.version() +
', Operation class.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (BasicTest, DeveloperTests):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
return mu[0]
S = qop(*x)
# calculate the expected output
if op.num_wires == 1:
S = block_diag(S, np.identity(2))[:, [0, 2, 1, 3]][[0, 2, 1, 3]]
return (S @ np.array([a.real, a.imag, 0, 0])*np.sqrt(2*hbar))[0]
if g == 'GaussianState':
p = [np.array([0.432, 0.123, 0.342, 0.123]), np.diag([0.5234]*4)]
else:
p = [0.432423, -0.12312, 0.324, 0.763][:op.num_params]
self.assertAllEqual(circuit(*p), reference(*p))
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() + ', default.gaussian plugin.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (TestAuxillaryFunctions,
TestGates,
TestStates,
TestDefaultGaussianDevice,
TestDefaultGaussianIntegration):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
if (operation, observable) not in outputs:
outputs[(operation, observable)] = {}
outputs[(operation,
observable)][str(type(dev).__name__) + "(shots=" +
str(dev.shots) + ")"] = output
#if we could run the circuit on more than one device assert that both should have given the same output
for (key, val) in outputs.items():
if len(val) >= 2:
self.assertAllElementsAlmostEqual(
val.values(),
delta=self.tol,
msg="Outputs " + str(list(val.values())) +
" of devices [" + ', '.join(list(val.keys())) +
"] do not agree for a circuit consisting of a " +
str(key[0]) + " Operation followed by a " + str(key[1]) +
" Expectation.")
if __name__ == '__main__':
log.info('Testing PennyLane ProjectQ Plugin version ' + qml.version() +
', Device class.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (CompareWithDefaultQubitTest, ):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
a = np.array([-np.sqrt(2), -0.54])
b = np.array([np.pi / 7] * 6).reshape([3, 2])
circuit_output = circuit(a, b)
expected_output = np.cos(np.array([[a[0], a[1], b[-1, 0]]]))
self.assertAllAlmostEqual(circuit_output,
expected_output,
delta=self.tol)
# circuit jacobians
circuit_jacobian = circuit.jacobian([a, b])
expected_jacobian = np.array([
[-np.sin(a[0])] + [0.] * 7, # expval 0
[0., -np.sin(a[1])] + [0.] * 6, # expval 1
[0.] * 2 + [0.] * 5 + [-np.sin(b[2, 1])]
]) # expval 2
self.assertAllAlmostEqual(circuit_jacobian,
expected_jacobian,
delta=self.tol)
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() + ', QNode class.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (BasicTest, GradientTest):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
def circuit():
qml.BasisState(bits_to_flip, wires=list(range(self.num_subsystems-1)))
return qml.expval.PauliZ(0), qml.expval.PauliZ(1), qml.expval.PauliZ(2), qml.expval.PauliZ(3)
self.assertAllAlmostEqual([1]*(self.num_subsystems-1)-2*bits_to_flip, np.array(circuit()[:-1]), delta=self.tol)
def test_disallow_basis_state_after_other_operation(self):
if self.devices is None:
return
self.logTestName()
for device in self.devices:
@qml.qnode(device)
def circuit():
qml.PauliX(wires=[0])
qml.BasisState(np.array([0, 1, 0, 1]), wires=list(range(self.num_subsystems)))
return qml.expval.PauliZ(0)
self.assertRaises(pennylane._device.DeviceError, circuit)
if __name__ == '__main__':
print('Testing PennyLane qiskit Plugin version ' + qml.version() + ', BasisState operation.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (BasisStateTest, ):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
grad_true = grad_true0 + grad_true1 # product rule
self.assertAlmostEqual(grad_eval, grad_true, delta=self.tol)
def test_gradient_exception_on_sample(self):
"""Tests that the proper exception is raised if differentiation of sampling is attempted."""
self.logTestName()
@qml.qnode(self.qubit_dev2)
def circuit(x):
qml.RX(x, wires=[0])
return qml.sample(qml.PauliZ(0), 1), qml.sample(qml.PauliX(1), 1)
with self.assertRaisesRegex(
qml.QuantumFunctionError,
"Circuits that include sampling can not be differentiated."
):
grad_fn = autograd.jacobian(circuit)
grad_fn(1.0)
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() + ', automatic gradients.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (CVGradientTest, QubitGradientTest):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
qml.RY(phi[1], wires=1)
qml.CNOT(wires=[0, 1])
qml.PhaseShift(theta[0], wires=0)
return qml.expval(qml.PauliZ(0))
phi = [0.5, 0.1]
theta = [0.2]
phi_t = tfe.Variable(phi)
theta_t = tfe.Variable(theta)
dcircuit = qml.grad(circuit, [0, 1])
autograd_grad = dcircuit(phi, theta)
dcircuit = tfe.gradients_function(circuit_tfe)
tfe_grad = dcircuit(phi_t, theta_t)
self.assertAllAlmostEqual(autograd_grad[0], tfe_grad[0], delta=self.tol)
self.assertAllAlmostEqual(autograd_grad[1], tfe_grad[1], delta=self.tol)
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() + ', QNode TFE interface.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (TFEQNodeTests, IntegrationTests):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
dev = qml.device("default.qubit", wires=2)
@qml.qnode(dev)
def circuit(x, target_observable=None):
qml.RX(x[0], wires=0)
qml.RY(x[1], wires=0)
qml.RZ(x[2], wires=0)
qml.CNOT(wires=[0, 1])
return qml.expval(qml.Hermitian(target_observable, wires=[0, 1]))
target_state = 1 / np.sqrt(2) * np.array([1, 0, 0, 1])
target_herm_op = np.outer(target_state.conj(), target_state)
weights = np.array([0.5, 0.1, 0.2])
expval = circuit(weights, target_observable=target_herm_op)
self.assertAlmostEqual(expval, 0.590556, delta=self.tol)
if __name__ == "__main__":
print("Testing PennyLane version " + qml.version() + ", default.qubit plugin.")
# run the tests in this file
suite = unittest.TestSuite()
for t in (
TestAuxillaryFunctions,
TestStateFunctions,
TestDefaultQubitDevice,
TestDefaultQubitIntegration,
):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
shots = 5
dev1 = ProjectQIBMBackend(wires=self.num_subsystems, shots=shots, use_hardware=False, user="******", password='******')
self.assertEqual(shots, dev1.shots)
dev2 = ProjectQIBMBackend(wires=self.num_subsystems, num_runs=shots, use_hardware=False, user="******", password='******')
self.assertEqual(shots, dev2.shots)
dev2 = ProjectQIBMBackend(wires=self.num_subsystems, shots=shots+2, num_runs=shots, use_hardware=False, user="******", password='******')
self.assertEqual(shots, dev2.shots)
def test_initiatlization_via_pennylane(self):
for short_name in [
'projectq.simulator',
'projectq.classical',
'projectq.ibm'
]:
try:
dev = dev = qml.device(short_name, wires=2, user='******', password='******', verbose=True)
except DeviceError:
raise Exception("This test is expected to fail until pennylane-pq is installed.")
if __name__ == '__main__':
print('Testing PennyLane ProjectQ Plugin version ' + qml.version() + ', device initialization.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (DeviceInitialization, ):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
x_onestep_target = x_vec - adapted_stepsize * firstmoment / (
np.sqrt(secondmoment) + 1e-8)
self.assertAllAlmostEqual(x_onestep,
x_onestep_target,
delta=self.tol)
x_twosteps = self.adam_opt.step(f, x_onestep)
adapted_stepsize = stepsize * np.sqrt(1 - delta**2) / (
1 - gamma**2)
firstmoment = (gamma * gradf(x_vec) +
(1 - gamma) * gradf(x_onestep))
secondmoment = (
delta * gradf(x_vec) * gradf(x_vec) +
(1 - delta) * gradf(x_onestep) * gradf(x_onestep))
x_twosteps_target = x_onestep - adapted_stepsize * firstmoment / (
np.sqrt(secondmoment) + 1e-8)
self.assertAllAlmostEqual(x_twosteps,
x_twosteps_target,
delta=self.tol)
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() + ', basic optimizers.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (BasicTest, ):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
outputs[(operation, observable)] = {}
outputs[(operation, observable)][type(dev)] = output
except IgnoreOperationException as e:
log.info(e)
#if we could run the circuit on more than one device assert that both should have given the same output
for (key, val) in outputs.items():
if len(val) >= 2:
self.assertAllElementsAlmostEqual(
val.values(),
delta=self.tol,
msg="Outputs " + str(list(val.values())) + " of devices " +
str(list(val.keys())) +
" do not agree for a circuit consisting of a " +
str(key[0]) + " Operation followed by a " + str(key[0]) +
" Expectation.")
if __name__ == '__main__':
log.info('Testing PennyLane qiskit Plugin version ' + qml.version() +
', Device class.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (CompareWithDefaultQubitTest, ):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
"""
def test_projectq_import(self):
"""Check that from projectq.ops import MatrixGate can raise an exception without problems, this ensures backward compatibility with older versions of ProjectQ
"""
del sys.modules["pennylane_pq.pqops"]
import projectq.ops
if 'MatrixGate' in projectq.ops.__dict__:
del projectq.ops.__dict__['MatrixGate']
import pennylane_pq.pqops
del sys.modules["pennylane_pq.pqops"]
import projectq.ops
if 'MatrixGate' not in projectq.ops.__dict__:
projectq.ops.__dict__['MatrixGate'] = projectq.ops.__dict__['BasicGate']
import pennylane_pq.pqops
# restore
del sys.modules["projectq.ops"]
import pennylane_pq.pqops
if __name__ == '__main__':
print('Testing PennyLane ProjectQ Plugin version ' + qml.version() + ', import test.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (ProjectQImportTest, ):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
dev._eng.backend.get_probabilities = MagicMock()
dev._eng.backend.get_probabilities.return_value = {'00': 1.0}
self.assertRaises(DeviceError,
dev.expval,
'PauliX',
wires=[0],
par=list())
self.assertRaises(DeviceError,
dev.expval,
'PauliY',
wires=[0],
par=list())
self.assertRaises(DeviceError,
dev.expval,
'Hadamard',
wires=[0],
par=list())
if __name__ == '__main__':
print('Testing PennyLane ProjectQ Plugin version ' + qml.version() +
', device expval and pre_expval.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (ExpvalAndPreExpvalMock, Expval):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
wires=[0, 1]) #this expectation will never be supported
return qml.expval.Homodyne(0.7, 0)
self.assertRaises(pennylane._device.DeviceError, circuit)
def test_unsupported_expectation(self):
if self.devices is None:
return
self.logTestName()
for device in self.devices:
@qml.qnode(device)
def circuit():
return qml.expval.Homodyne(
0.7, 0) #this expectation will never be supported
self.assertRaises(pennylane._device.DeviceError, circuit)
if __name__ == '__main__':
print('Testing PennyLane qiskit Plugin version ' + qml.version() +
', unsupported operations.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (UnsupportedOperationTest, ):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
for reused_p in thetas:
reused_p = reused_p**3 / 19
for other_p in thetas:
other_p = other_p**2 / 11
# autograd gradient
grad = autograd.grad(f)
grad_eval = grad(reused_p, other_p)
# manual gradient
grad_true0 = (expZ(Rx(reused_p) @ Rz(other_p) @ Ry(reused_p + np.pi / 2) @ Rx(extra_param) @ zero_state) \
-expZ(Rx(reused_p) @ Rz(other_p) @ Ry(reused_p - np.pi / 2) @ Rx(extra_param) @ zero_state)) / 2
grad_true1 = (expZ(Rx(reused_p + np.pi / 2) @ Rz(other_p) @ Ry(reused_p) @ Rx(extra_param) @ zero_state) \
-expZ(Rx(reused_p - np.pi / 2) @ Rz(other_p) @ Ry(reused_p) @ Rx(extra_param) @ zero_state)) / 2
grad_true = grad_true0 + grad_true1 # product rule
self.assertAlmostEqual(grad_eval, grad_true, delta=self.tol)
if __name__ == '__main__':
print('Testing PennyLane version ' + qml.version() +
', automatic gradients.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (CVGradientTest, QubitGradientTest):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)
# test false if no config is loaded
config = Configuration('noconfig')
self.assertFalse(config)
# test true if config is loaded
config = Configuration(filename)
self.assertTrue(config)
class PennyLaneInitTests(BaseTest):
"""Tests to ensure that the code in PennyLane/__init__.py
correctly knows how to load and use configuration data"""
def test_device_load(self):
"""Test loading a device with a configuration."""
self.logTestName()
config = Configuration(name=filename)
dev = qml.device('default.gaussian', wires=2, config=config)
self.assertTrue(dev.hbar, 1)
if __name__ == '__main__':
print('Testing PennyLane version ' + pennylane.version() + ', Configuration class.')
# run the tests in this file
suite = unittest.TestSuite()
for t in (BasicTest, PennyLaneInitTests):
ttt = unittest.TestLoader().loadTestsFromTestCase(t)
suite.addTests(ttt)
unittest.TextTestRunner().run(suite)