def test_submit_raises(self, backend_component, tmpdir):
"""Test that submitting a workflow to Orquestra with invalid
requirements raises an error."""
# Skip if not logged in to Orquestra
try_resp = qe_list_workflow()
need_login_msg = "token has expired, please log in again\n"
if need_login_msg in try_resp:
pytest.skip("Has not logged in to the Orquestra platform.")
circuits = [qasm_circuit_default]
# This will not be a valid operator: will raise error
operator = []
# Fill in workflow template
workflow = gw.gen_expval_workflow(backend_component,
backend_specs_default, circuits,
operator)
file_name = tmpdir.join("test_workflow.yaml")
with open(file_name, "w") as file:
d = yaml.dump(workflow, file)
# Submit a workflow --- error due to the operator
with pytest.raises(ValueError, match="Error"):
workflow_id = qe_submit(file_name)
def test_can_submit_and_query_workflow_details(self, resources, tmpdir):
"""Test that filling in the workflow template for getting expectation
values can be submitted to Orquestra and workflow details can be queried."""
# Skip if not logged in to Orquestra
try_resp = qe_list_workflow()
need_login_msg = "token has expired, please log in again\n"
if need_login_msg in try_resp:
pytest.skip("Has not logged in to the Orquestra platform.")
backend_component = "qe-forest"
op = ['["[Z0]"]']
circuits = [qasm_circuit_default]
# Fill in workflow template
workflow = gw.gen_expval_workflow(backend_component,
backend_specs_default,
circuits,
op,
resources=resources)
file_name = tmpdir.join("test_workflow.yaml")
with open(file_name, "w") as file:
d = yaml.dump(workflow, file)
# Submit a workflow
workflow_id = qe_submit(file_name)
workflow_msg = workflow_details(workflow_id)
details_string = "".join(workflow_msg)
assert workflow_id in details_string
def test_jacobian_with_batch_execute(self):
"""Test that the value of the jacobian computed using the internal
batch_execute method corresponds to the value computed with
the default.qubit device.
There are ``qubits * layers * 3 * 2`` many circuits to evaluate.
"""
try_resp = qe_list_workflow()
need_login_msg = "token has expired, please log in again\n"
if need_login_msg in try_resp:
pytest.skip("Has not logged in to the Orquestra platform.")
qml.enable_tape()
# Evaluate 12 circuits (2 * 1 * 3 * 2)
# By default, this fits into two separate workflow files
qubits = 2
layers = 1
weights = qml.init.strong_ent_layers_uniform(layers, qubits)
dev1 = qml.device(
"orquestra.qiskit",
backend="statevector_simulator",
wires=qubits,
analytic=True,
keep_files=False,
)
dev2 = qml.device("default.qubit", wires=qubits, analytic=True)
def func(weights):
qml.templates.StronglyEntanglingLayers(weights,
wires=range(qubits))
return qml.expval(qml.PauliZ(0))
orquestra_qnode = qml.QNode(func, dev1)
default_qnode = qml.QNode(func, dev2)
dfunc1 = qml.grad(orquestra_qnode)
dfunc2 = qml.grad(default_qnode)
res_orquestra = dfunc1(weights)
res_default_qubit = dfunc2(weights)
assert np.allclose(res_orquestra, res_default_qubit)
qml.disable_tape()
def test_apply_x(self, token):
"""Test a simple circuit that applies PauliX on the first wire."""
TOL = tol
dev = qml.device("orquestra.ibmq", wires=3, ibmqx_token=token)
# Skip if not logged in to Orquestra
try_resp = qe_list_workflow()
need_login_msg = "token has expired, please log in again\n"
if need_login_msg in try_resp:
pytest.skip("Has not logged in to the Orquestra platform.")
@qml.qnode(dev)
def circuit():
qml.PauliX(0)
return qml.expval(qml.PauliZ(0))
assert math.isclose(circuit(), -1, abs_tol=TOL)
def test_apply_hadamard(self, device_name, backend, analytic):
"""Test a simple circuit that applies Hadamard on the first wire."""
dev = qml.device(device_name,
wires=3,
backend=backend,
analytic=analytic,
keep_files=False)
TOL = analytic_tol if dev.analytic else tol
# Skip if not logged in to Orquestra
try_resp = qe_list_workflow()
need_login_msg = "token has expired, please log in again\n"
if need_login_msg in try_resp:
pytest.skip("Has not logged in to the Orquestra platform.")
@qml.qnode(dev)
def circuit():
qml.Hadamard(0)
return qml.expval(qml.PauliZ(0))
assert math.isclose(circuit(), 0, abs_tol=TOL)
def test_compute_expval_including_identity(self):
"""Test a simple circuit that involves computing the expectation value of the
Identity operator."""
dev = qml.device("orquestra.qiskit", wires=3)
# Skip if not logged in to Orquestra
try_resp = qe_list_workflow()
need_login_msg = "token has expired, please log in again\n"
if need_login_msg in try_resp:
pytest.skip("Has not logged in to the Orquestra platform.")
@qml.qnode(dev)
def circuit():
qml.PauliX(0)
qml.PauliX(1)
qml.PauliX(2)
return (
qml.expval(qml.Identity(0)),
qml.expval(qml.PauliZ(1)),
qml.expval(qml.Identity(2)),
)
assert np.allclose(circuit(), np.array([1, -1, 1]))
