What is the test for a motion for a continuance to secure the attendance of a witness?

[Petitioner] argues the court erred in denying his motion for a continuance. When a party seeks a continuance to secure the attendance of a witness, the party must show: (1) he or she has exercised due diligence to secure the witness's attendance, (2) the witness's expected testimony is material and not cumulative, (3) the testimony can be obtained within a reasonable time, and (4) the facts to which the witness would testify cannot otherwise be proven. (People v. Jenkins (2000) 22 Cal.4th 900, 1037 (Jenkins))