def test_apply_parametrized_operation_inverse(self, op, pars, wires, expected_circuit):
"""Tests that inverse operations get recognized and converted to correct parameters for
parametrized ops."""
dev = AQTDevice(2, api_key=SOME_API_KEY)
dev._apply_operation(op(*pars, wires=wires).inv())
assert dev.circuit == expected_circuit
def test_unsupported_operation_exception(self):
"""Tests whether an exception is raised if an unsupported operation
is attempted to be appended to queue."""
dev = AQTDevice(1, api_key=SOME_API_KEY)
with pytest.raises(qml.DeviceError, match="is not supported on AQT devices"):
dev._append_op_to_queue("BAD_GATE", 0.5, [0])
def test_apply_basisstate_not_first_exception(self):
"""Tests that the apply method raises an exception when BasisState
is not the first operation."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
with pytest.raises(qml.DeviceError, match="only supported at the beginning of a circuit"):
dev.apply([qml.RX(0.5, wires=1), qml.BasisState(np.array([1, 1, 1]), wires=[0, 1, 2])])
def test_apply_qubitstatevector_not_first_exception(self):
"""Tests that the apply method raises an exception when QubitStateVector
is not the first operation."""
dev = AQTDevice(2, api_key=SOME_API_KEY)
state = np.ones(8) / np.sqrt(8)
with pytest.raises(qml.DeviceError, match="only supported at the beginning of a circuit"):
dev.apply([qml.RX(0.5, wires=1), qml.QubitStateVector(state, wires=[0, 1, 2])])
def test_apply_operation_pauli(self, wires, op, aqt_name):
"""Tests that the _apply_operation method correctly populates the circuit
queue when a PennyLane Pauli operation is provided."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
assert dev.circuit == []
dev._apply_operation(op(wires=wires))
assert dev.circuit == [[aqt_name, 1.0, wires]]
def test_apply_operation_S(self, wires):
"""Tests that the _apply_operation method correctly populates the circuit
queue when a PennyLane S operation is provided."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
assert dev.circuit == []
dev._apply_operation(qml.S(wires=wires))
assert dev.circuit == [["Z", 0.5, wires]]
def test_apply_operation_hadamard(self, wires):
"""Tests that the _apply_operation method correctly populates the circuit
queue when a PennyLane Hadamard operation is provided."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
assert dev.circuit == []
dev._apply_operation(qml.Hadamard(wires=wires))
assert dev.circuit == [["X", 1.0, wires], ["Y", -0.5, wires]]
def test_apply_operation_R(self, wires, par0, par1):
"""Tests that the _apply_operation method correctly populates the circuit
queue when a R gate operation is provided."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
assert dev.circuit == []
dev._apply_operation(ops.R(par0, par1, wires=wires))
assert dev.circuit == [["R", par0, par1, wires]]
def test_apply_operation_rotations(self, op, par, wires, aqt_name):
"""Tests that the _apply_operation method correctly populates the circuit
queue when a PennyLane RX, RY, or RZ operation is provided."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
assert dev.circuit == []
dev._apply_operation(op(par, wires=wires))
aqt_par = par / np.pi
assert dev.circuit == [[aqt_name, aqt_par, wires]]
def test_retry_delay(self):
"""Tests that the ``retry_delay`` property can be set manually."""
dev = AQTDevice(3, api_key=SOME_API_KEY, retry_delay=2.5)
assert dev.retry_delay == 2.5
dev.retry_delay = 1.0
assert dev.retry_delay == 1.0
with pytest.raises(qml.DeviceError, match="needs to be positive"):
dev.retry_delay = -5
def test_generate_samples(self, samples, indices):
"""Tests that the generate_samples function of AQTDevice provides samples in
the correct format expected by PennyLane."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
dev.shots = 10
dev.samples = samples
res = dev.generate_samples()
expected_array = np.stack([np.ravel(indices)] * 10)
assert res.shape == (dev.shots, dev.num_wires)
assert np.all(res == expected_array)
def test_api_key_not_found_error(self, monkeypatch, tmpdir):
"""Tests that an error is thrown with the device is created without
a valid API token."""
monkeypatch.setenv("AQT_TOKEN", "")
monkeypatch.setenv("PENNYLANE_CONF", "")
monkeypatch.setattr("os.curdir", tmpdir.join("folder_without_a_config_file"))
monkeypatch.setattr(
"pennylane.default_config", qml.Configuration("config.toml")
) # force loading of config
with pytest.raises(ValueError, match="No valid api key for AQT platform found"):
dev = AQTDevice(2)
def test_set_api_configs(self):
"""Tests that the ``set_api_configs`` method properly (re)sets the API configs."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
new_api_key = "ZZZ000"
dev._api_key = new_api_key
dev.BASE_HOSTNAME = "https://server.someaddress.com"
dev.TARGET_PATH = "some/path"
dev.set_api_configs()
assert dev.header == {"Ocp-Apim-Subscription-Key": new_api_key, "SDK": "pennylane"}
assert dev.data == {"access_token": new_api_key, "no_qubits": dev.num_wires}
assert dev.hostname == "https://server.someaddress.com/some/path"
def test_apply_operation_basisstate(self, wires, state):
"""Tests that the _apply_operation method correctly populates the circuit
queue when a PennyLane BasisState operation is provided."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
assert dev.circuit == []
dev._apply_operation(qml.BasisState(np.array(state), wires=wires))
expected_circuit = []
for bit, wire in zip(state, wires):
if bit == 1:
expected_circuit.append(["X", 1.0, [wire]])
assert dev.circuit == expected_circuit
def test_default_init(self, num_wires, shots, retry_delay):
"""Tests that the device is properly initialized."""
dev = AQTDevice(num_wires, shots, SOME_API_KEY, retry_delay)
assert dev.num_wires == num_wires
assert dev.shots == shots
assert dev.retry_delay == retry_delay
assert dev.analytic == False
assert dev.circuit == []
assert dev.circuit_json == ""
assert dev.samples is None
assert dev.BASE_HOSTNAME == BASE_HOSTNAME
assert dev.HTTP_METHOD == HTTP_METHOD
assert API_HEADER_KEY in dev.header.keys()
assert dev.header[API_HEADER_KEY] == SOME_API_KEY
def test_reset(self):
"""Tests that the ``reset`` method corretly resets data."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
assert dev.circuit == []
dev.circuit = [["RX", 0.5, [0]]]
dev.circuit_json = "some dummy string"
dev.samples = [5, 5, 5]
dev.shots = 55
dev.reset()
assert dev.circuit == []
assert dev.circuit_json == ""
assert dev.samples == None
assert dev.shots == 55 # should not be reset
def test_serialize(self, circuit, expected):
"""Tests that the ``serialize`` static method correctly converts
from a list of lists into an acceptable JSON string."""
dev = AQTDevice(3, api_key=SOME_API_KEY)
res = dev.serialize(circuit)
assert res == expected