def test_circuit_on_qubits_errors():
smallc = Circuit(2)
smallc.add((gates.H(i) for i in range(2)))
with pytest.raises(ValueError):
next(smallc.on_qubits(0, 1, 2))
smallc = Circuit(2)
smallc.add(gates.Flatten(4 * [0.5]))
with pytest.raises(NotImplementedError):
next(smallc.on_qubits(0, 1))
from qibo.abstractions.callbacks import Callback
smallc = Circuit(4)
smallc.add(gates.CallbackGate(Callback()))
with pytest.raises(NotImplementedError):
next(smallc.on_qubits(0, 1, 2, 3))
def test_flatten():
gate = gates.Flatten([1, 2, 3, 4])
assert gate.coefficients == [1, 2, 3, 4]
with pytest.raises(NotImplementedError):
gate._on_qubits(0, 2)
def test_circuit_draw_not_supported_gates():
"""Check that ``NotImplementedError`` is raised if gate is not supported."""
c = Circuit(2)
c.add(gates.Flatten(1))
with pytest.raises(NotImplementedError):
c.draw()
def test_unknown_gate_error():
""""Check that using `to_qasm` with not supported gates raises error."""
c = Circuit(2)
c.add(gates.Flatten(4 * [0]))
with pytest.raises(ValueError):
c.to_qasm()