def test_resulthandle() -> None:
c = Circuit(4, 4).H(0).CX(0, 2)
b = ProjectQBackend()
handles = b.process_circuits([c, c.copy()])
ids = [han[0] for han in handles]
assert all(isinstance(idval, str) for idval in ids)
assert ids[0] != ids[1]
assert len(b.get_result(handles[0]).get_state()) == (1 << 4)
assert b.circuit_status(handles[1]).status == StatusEnum.COMPLETED
with pytest.raises(TypeError) as errorinfo:
_ = b.get_result(ResultHandle("43", 5))
assert "ResultHandle('43', 5) does not match expected identifier types" in str(
errorinfo.value)
wronghandle = ResultHandle("asdf")
with pytest.raises(CircuitNotRunError) as errorinfocirc:
_ = b.get_result(wronghandle)
assert "Circuit corresponding to {0!r} ".format(
wronghandle) + "has not been run by this backend instance." in str(
errorinfocirc.value)
def test_shots_bits_edgecases(n_shots, n_bits) -> None:
projectq_backend = ProjectQBackend()
c = Circuit(n_bits, n_bits)
# TODO TKET-813 add more shot based backends and move to integration tests
h = projectq_backend.process_circuit(c, n_shots)
res = projectq_backend.get_result(h)
correct_shots = np.zeros((n_shots, n_bits), dtype=int)
correct_shape = (n_shots, n_bits)
correct_counts = Counter({(0, ) * n_bits: n_shots})
# BackendResult
assert np.array_equal(res.get_shots(), correct_shots)
assert res.get_shots().shape == correct_shape
assert res.get_counts() == correct_counts
# Direct
assert np.array_equal(projectq_backend.get_shots(c, n_shots),
correct_shots)
assert projectq_backend.get_shots(c, n_shots).shape == correct_shape
assert projectq_backend.get_counts(c, n_shots) == correct_counts