What is the test for ineffective assistance in a motion for habeas corpus?

"Where the record does not illuminate the basis for the challenged acts or omissions, a claim of ineffective assistance is more appropriately made in a petition for habeas corpus. In habeas corpus proceedings, there is an opportunity in an evidentiary hearing to have trial counsel fully describe his or her reasons for acting or failing to act in the manner complained of. [Citations.] For example, counsel may explain why certain defenses were or were not presented. Having afforded the trial attorney an opportunity to explain, courts are in a position to intelligently evaluate whether counsel's acts or omissions were within the range of reasonable competence." (People v. Pope, supra, 23 Cal.3d. at p. 426, fn. omitted.)