def test_command_init(main_engine):
qureg0 = Qureg([Qubit(main_engine, 0)])
qureg1 = Qureg([Qubit(main_engine, 1)])
qureg2 = Qureg([Qubit(main_engine, 2)])
# qureg3 = Qureg([Qubit(main_engine, 3)])
# qureg4 = Qureg([Qubit(main_engine, 4)])
gate = BasicGate()
cmd = _command.Command(main_engine, gate, (qureg0, qureg1, qureg2))
assert cmd.gate == gate
assert cmd.tags == []
expected_tuple = (qureg0, qureg1, qureg2)
for cmd_qureg, expected_qureg in zip(cmd.qubits, expected_tuple):
assert cmd_qureg[0].id == expected_qureg[0].id
# Testing that Qubits are now WeakQubitRef objects
assert type(cmd_qureg[0]) == WeakQubitRef
assert cmd._engine == main_engine
# Test that quregs are ordered if gate has interchangeable qubits:
symmetric_gate = BasicGate()
symmetric_gate.interchangeable_qubit_indices = [[0, 1]]
symmetric_cmd = _command.Command(main_engine, symmetric_gate, (qureg2, qureg1, qureg0))
assert cmd.gate == gate
assert cmd.tags == []
expected_ordered_tuple = (qureg1, qureg2, qureg0)
for cmd_qureg, expected_qureg in zip(symmetric_cmd.qubits, expected_ordered_tuple):
assert cmd_qureg[0].id == expected_qureg[0].id
assert symmetric_cmd._engine == main_engine
def test_command_interchangeable_qubit_indices(main_engine):
gate = BasicGate()
gate.interchangeable_qubit_indices = [[0, 4, 5], [1, 2]]
qubit0 = Qureg([Qubit(main_engine, 0)])
qubit1 = Qureg([Qubit(main_engine, 1)])
qubit2 = Qureg([Qubit(main_engine, 2)])
qubit3 = Qureg([Qubit(main_engine, 3)])
qubit4 = Qureg([Qubit(main_engine, 4)])
qubit5 = Qureg([Qubit(main_engine, 5)])
input_tuple = (qubit4, qubit5, qubit3, qubit2, qubit1, qubit0)
cmd = _command.Command(main_engine, gate, input_tuple)
assert (cmd.interchangeable_qubit_indices == [[0, 4, 5], [1, 2]]
or cmd.interchangeable_qubit_indices == [[1, 2], [0, 4, 5]])
def test_command_order_qubits(main_engine):
qubit0 = Qureg([Qubit(main_engine, 0)])
qubit1 = Qureg([Qubit(main_engine, 1)])
qubit2 = Qureg([Qubit(main_engine, 2)])
qubit3 = Qureg([Qubit(main_engine, 3)])
qubit4 = Qureg([Qubit(main_engine, 4)])
qubit5 = Qureg([Qubit(main_engine, 5)])
gate = BasicGate()
gate.interchangeable_qubit_indices = [[0, 4, 5], [1, 2]]
input_tuple = (qubit4, qubit5, qubit3, qubit2, qubit1, qubit0)
expected_tuple = (qubit0, qubit3, qubit5, qubit2, qubit1, qubit4)
cmd = _command.Command(main_engine, gate, input_tuple)
for ordered_qubit, expected_qubit in zip(cmd.qubits, expected_tuple):
assert ordered_qubit[0].id == expected_qubit[0].id