def METHOD_NAME(self):
    """Test if the bell circuit with virtual qubits is transformed into
    the circuit with physical qubits under trivial layout.
    """
    v = QuantumRegister(2, "v")
    circuit = QuantumCircuit(v)
    circuit.h(v[0])
    circuit.cx(v[0], v[1])
    q = QuantumRegister(2, "q")
    expected = QuantumCircuit(q)
    expected.h(q[0])
    expected.cx(q[0], q[1])
    dag = circuit_to_dag(circuit)
    pass_ = ApplyLayout()
    pass_.property_set["layout"] = Layout({v[0]: 0, v[1]: 1})
    after = pass_.run(dag)
    self.assertEqual(circuit_to_dag(expected), after)