277. Before testifying, witnesses must state their name and place of residence and swear under oath to tell the truth, the whole truth and nothing but the truth. However, if the disclosure of their address gives cause to fear for their safety, the court may dispense them from disclosing it and issue such orders as are appropriate.
A refusal to take the oath constitutes a refusal to testify; if it persists, it constitutes contempt of court.