def test_control_function_invalid_function():
main_engine = MainEngine(backend=DummyEngine(),
engine_list=[DummyEngine()])
qureg = main_engine.allocate_qureg(3)
with pytest.raises(AttributeError):
ControlFunctionOracle(-42) | qureg
with pytest.raises(AttributeError):
ControlFunctionOracle(0x8e) | qureg
with pytest.raises(RuntimeError):
ControlFunctionOracle(0x8, synth=revkit.esopps) | qureg
def test_control_function_majority():
saving_backend = DummyEngine(save_commands=True)
main_engine = MainEngine(backend=saving_backend,
engine_list=[DummyEngine()])
qubit0 = main_engine.allocate_qubit()
qubit1 = main_engine.allocate_qubit()
qubit2 = main_engine.allocate_qubit()
qubit3 = main_engine.allocate_qubit()
ControlFunctionOracle(0xe8) | (qubit0, qubit1, qubit2, qubit3)
assert len(saving_backend.received_commands) == 7
def test_control_function_majority_from_python():
dormouse = pytest.importorskip('dormouse')
def maj(a, b, c):
return (a and b) or (a and c) or (b and c) # pragma: no cover
saving_backend = DummyEngine(save_commands=True)
main_engine = MainEngine(backend=saving_backend,
engine_list=[DummyEngine()])
qubit0 = main_engine.allocate_qubit()
qubit1 = main_engine.allocate_qubit()
qubit2 = main_engine.allocate_qubit()
qubit3 = main_engine.allocate_qubit()
ControlFunctionOracle(maj) | (qubit0, qubit1, qubit2, qubit3)