What is the test for a judge to grant probation?

" 'The grant or denial of probation is within the trial court's discretion and the defendant bears a heavy burden when attempting to show an abuse of that discretion. [Citation.]' [Citation.] 'In reviewing [a trial court's determination whether to grant or deny probation,] it is not our function to substitute our judgment for that of the trial court. Our function is to determine whether the trial court's order granting [or denying] probation is arbitrary or capricious or exceeds the bounds of reason considering all the facts and circumstances.' " (People v. Weaver (2007) 149 Cal.App.4th 1301, 1311.)