def test_qureg_measure_if_qubit():
eng = MainEngine(backend=DummyEngine(), engine_list=[DummyEngine()])
qureg0 = _qubit.Qureg(eng.allocate_qubit())
qureg1 = _qubit.Qureg(eng.allocate_qubit())
eng.set_measurement_result(qureg0[0], False)
eng.set_measurement_result(qureg1[0], True)
assert not bool(qureg0)
assert not qureg0
assert bool(qureg1)
assert qureg1
assert int(qureg0) == 0
assert int(qureg1) == 1
# Testing functions for python 2 and python 3
assert not qureg0.__bool__()
assert qureg1.__bool__()
def test_qureg_engine():
eng1 = MainEngine(backend=DummyEngine(), engine_list=[DummyEngine()])
eng2 = MainEngine(backend=DummyEngine(), engine_list=[DummyEngine()])
qureg = _qubit.Qureg([_qubit.Qubit(eng1, 0), _qubit.Qubit(eng1, 1)])
assert eng1 == qureg.engine
qureg.engine = eng2
assert qureg[0].engine == eng2 and qureg[1].engine == eng2
def test_qureg(qubit_ids, expected): eng = MainEngine(backend = DummyEngine(), engine_list = [DummyEngine()]) qureg = _qubit.Qureg() for qubit_id in qubit_ids: qubit = _qubit.Qubit(eng, qubit_id) qureg.append(qubit) assert str(qureg) == expected
def test_qureg_measure_exception():
eng = MainEngine(backend=DummyEngine(), engine_list=[DummyEngine()])
qureg = _qubit.Qureg()
for qubit_id in [0, 1]:
qubit = _qubit.Qubit(eng, qubit_id)
qureg.append(qubit)
with pytest.raises(Exception):
qureg.__bool__()
with pytest.raises(Exception):
qureg.__int__()
def test_qureg_str():
assert str(_qubit.Qureg([])) == 'Qureg[]'
eng = MainEngine(backend=DummyEngine(), engine_list=[])
a = eng.allocate_qureg(10)
b = eng.allocate_qureg(50)
c = eng.allocate_qubit()
d = eng.allocate_qubit()
e = eng.allocate_qubit()
assert str(a) == 'Qureg[0-9]'
assert str(b) == 'Qureg[10-59]'
assert str(c) == 'Qureg[60]'
assert str(d) == 'Qureg[61]'
assert str(e) == 'Qureg[62]'
assert str(_qubit.Qureg(c + e)) == 'Qureg[60, 62]'
assert str(_qubit.Qureg(a + b)) == 'Qureg[0-59]'
assert str(_qubit.Qureg(a + b + c)) == 'Qureg[0-60]'
assert str(_qubit.Qureg(a + b + d)) == 'Qureg[0-59, 61]'
assert str(_qubit.Qureg(a + b + e)) == 'Qureg[0-59, 62]'
assert str(_qubit.Qureg(b + a)) == 'Qureg[10-59, 0-9]'
assert str(_qubit.Qureg(e + b + a)) == 'Qureg[62, 10-59, 0-9]'