What is the test for ineffective assistance of counsel?

prejudice suffered by the defendant as a result of the alleged deficiencies. The object of an ineffectiveness claim is not to grade counsel's performance. If it is easier to dispose of an ineffectiveness claim on the ground of lack of sufficient prejudice, which we expect will often be so, that course should be followed.' " (In re Cox (2003) 30 Cal.4th 974, 1019-1020.) To show ineffective assistance of counsel, appellant must show that he " 'suffered prejudice to a reasonable probability, that is, a probability sufficient to undermine confidence in the outcome. [Citations.]' " (People v. Gray (2005) 37 Cal.4th 168, 207; see also People v. Bolin (1998) 18 Cal.4th 297, 333.)