Louisiana does not require grounds for divorce. While “no fault” divorces are not really a thing under the civil law, divorces can either be for “cause” that entitles you more or less to an immediate divorce, and divorce where no cause is specified, which requires a certain waiting period between when the divorce is filed and when it is granted.
Sometimes, both spouses want to get divorced, and agree to make it as simple as possible. Those divorces rarely require court appearances or testimony, and can be as simple as signing paperwork in your lawyer’s office.