The court shall proceed to probate the testament ex parte as provided in Article 2882, unless an objection thereto is made at the hearing.

An objection to the ex parte probate of a testament may be presented in an opposition, or made orally at the hearing.  The opposition must comply with the provisions of Article 2902, and must be filed prior to the hearing.  The oral objection must specify the grounds of invalidity of the testament asserted, and must be urged immediately after the objector has had an opportunity to examine the purported testament.