def METHOD_NAME(self, reg_type):
    """Verify we find register bits added QuantumCircuit.add_register."""
    reg = reg_type(5, "reg")
    qc = QuantumCircuit()
    qc.add_register(reg)
    for idx, bit in enumerate(reg):
        self.assertEqual(qc.find_bit(bit), (idx, [(reg, idx)]))