What is the test for the protection of Fourth Amendment right to search and seizure in a Bunkers' locker?

"(T)he protection of the (Fourth) Amendment (against unreasonable searches and seizures) depends not upon a property right in the invaded (locker) but upon whether the (locker) was (an area) in which there was a reasonable expectation of freedom from governmental intrusion. See 389 U.S., at 352, 88 S.Ct., at 511. The crucial issue, therefore, is whether, in light of all the circumstances, (Bunkers' locker) was such a place." Mancusi v. DeForte, 392 U.S. 364, 368, 88 S.Ct. 2120, 2124, 20 L.Ed.2d 1154 (1968).