What is the test for a challenge to the sufficiency of the evidence in the context of unlawful possession of a controlled substance?

" 'In reviewing a challenge to the sufficiency of the evidence, we do not determine the facts ourselves. Rather, we "examine the whole record in the light most favorable to the judgment to determine whether it discloses substantial evidenceevidence that is reasonable, credible and of solid valuesuch that a reasonable trier of fact could find the defendant guilty beyond a reasonable doubt." [Citations.] We presume in support of the judgment the existence of every fact the trier reasonably could deduce from the evidence.' " (People v. Whisenhunt (2008) 44 Cal.4th 174, 200.)

" 'The essential elements of the offense of unlawful possession of a controlled substance are actual or constructive possession in an amount sufficient to be used as a controlled substance with knowledge of its presence and its nature as a controlled substance . . . . [] Actual or constructive possession is the right to exercise dominion and control over the contraband or the right to exercise dominion and control over the place where it is found. [Citation.] Exclusive possession is not necessary. A defendant does not avoid conviction if his right to exercise dominion and control over the place where the contraband was located is shared with others.' " (People v. Busch (2010) 187 Cal.App.4th 150, 161.)