What is the test for a motion for a continuance to prepare for trial?

Best contends that he was deprived effective assistance of counsel when the district court denied his request for a continuance so that his attorney could adequately prepare. The decision to deny a motion for continuance is reviewed for an abuse of discretion. United States v. Gonzalez-Rincon, 36 F.3d 859, 865 (9th Cir.1994), cert. denied, --- U.S. ----, 115 S.Ct. 1323, 131 L.Ed.2d 203 (1995). "To reverse a trial court's denial of a continuance, an appellant must show that the denial prejudiced her defense." Id.