def test_controlled_gate_or():
saving_backend = DummyEngine(save_commands=True)
main_engine = MainEngine(backend=saving_backend,
engine_list=[DummyEngine()])
gate = Rx(0.6)
qubit0 = Qubit(main_engine, 0)
qubit1 = Qubit(main_engine, 1)
qubit2 = Qubit(main_engine, 2)
qubit3 = Qubit(main_engine, 3)
expected_cmd = Command(main_engine, gate, ([qubit3], ))
expected_cmd.add_control_qubits([qubit0, qubit1, qubit2])
received_commands = []
# Option 1:
_metagates.ControlledGate(gate, 3) | ([qubit1], [qubit0], [qubit2
], [qubit3])
# Option 2:
_metagates.ControlledGate(gate, 3) | (qubit1, qubit0, qubit2, qubit3)
# Option 3:
_metagates.ControlledGate(gate, 3) | ([qubit1, qubit0], qubit2, qubit3)
# Option 4:
_metagates.ControlledGate(gate, 3) | (qubit1, [qubit0, qubit2], qubit3)
# Wrong option 5:
with pytest.raises(_metagates.ControlQubitError):
_metagates.ControlledGate(gate, 3) | (qubit1, [qubit0, qubit2, qubit3])
# Remove Allocate and Deallocate gates
for cmd in saving_backend.received_commands:
if not (isinstance(cmd.gate, FastForwardingGate)
or isinstance(cmd.gate, ClassicalInstructionGate)):
received_commands.append(cmd)
assert len(received_commands) == 4
for cmd in received_commands:
assert cmd == expected_cmd
def test_controlled_gate_comparison():
gate1 = _metagates.ControlledGate(Y, 1)
gate2 = _metagates.ControlledGate(Y, 1)
gate3 = _metagates.ControlledGate(T, 1)
gate4 = _metagates.ControlledGate(Y, 2)
assert gate1 == gate2
assert not gate1 == gate3
assert gate1 != gate4
def test_controlled_gate_init():
one_control = _metagates.ControlledGate(Y, 1)
two_control = _metagates.ControlledGate(Y, 2)
three_control = _metagates.ControlledGate(one_control, 2)
assert one_control._gate == Y
assert one_control._n == 1
assert two_control._gate == Y
assert two_control._n == 2
assert three_control._gate == Y
assert three_control._n == 3
def test_controlled_gate_empty_controls():
rec = DummyEngine(save_commands=True)
eng = MainEngine(backend=rec, engine_list=[])
a = eng.allocate_qureg(1)
_metagates.ControlledGate(Y, 0) | ((), a)
assert rec.received_commands[-1] == Command(eng, Y, [a])
def test_controlled_gate_str():
one_control = _metagates.ControlledGate(Y, 2)
assert str(one_control) == "CC" + str(Y)
def test_c():
expected = _metagates.ControlledGate(Y, 2)
assert _metagates.C(Y, 2) == expected
def test_controlled_gate_get_inverse():
one_control = _metagates.ControlledGate(Rx(0.5), 1)
expected = _metagates.ControlledGate(Rx(-0.5 + 4 * math.pi), 1)
assert one_control.get_inverse() == expected
