What is the test for a motion to continue a hearing so a party can secure the presence of a witness?

The decision to continue a hearing so a party can secure the presence of a witness is one within the trial court's discretion. ( People v. Roybal (1998) 19 Cal.4th 481, 504, 79 Cal.Rptr.2d 487, 966 P.2d 521.) A trial court does not abuse its discretion in denying a continuance unless the defendant establishes good cause for a continuance. (Ibid. ) Good cause requires a defendant to show that he or she exercised due diligence in

[7 Cal.5th 500]