What is the test for judicial review of final administrative determinations by writ of mandate?

Section 1094.5 of the Code of Civil Procedure sets out the procedure for judicial review of final administrative determinations by petitions for writ of mandate. (Fukuda v. City of Angels (1999) 20 Cal.4th 805, 810.) We review Commission's decision for an abuse of discretion. (Code Civ. Proc., 1094.5, subd. (b).) An abuse of discretion is established if Commission has not proceeded in a manner required by law, the order or decision is not supported by the findings, or the findings are not supported by the evidence. (Ibid.) Code of Civil Procedure section 1094.5, subdivision (c) provides: "Where it is claimed that the findings [of an administrative body] are not supported by the evidence, in cases in which the court is authorized by law to exercise its independent judgment on the evidence, abuse of discretion is established if the court determines that the findings are not supported by the weight of the evidence. In all other cases, abuse of discretion is established if the court determines that the findings are not supported by substantial evidence in the light of the whole record." Under this subdivision "[t]here are two tests for judicial review of the evidentiary basis for the agency's decision. The

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