What is the test for adverse possession of a parcel of land in a dispute?

that possession may be adverse even where the record owner is unaware of his or her rights to the propertyall that matters is that the occupation give the owner notice that the possessor claims the property as his or her own. (Id. at p. 459.) On the other hand, where there is confusion over the boundary and a claimant merely intends to claim the true line wherever it may be, possession is not adverse "absent an intention to claim the land in dispute as his own." (Id. at p. 460; see Gilardi v. Hallam (1981) 30 Cal.3d 317, 326 [where defendants take possession of disputed land mistakenly believing they were the owners and the record is silent as to whether they expressly or impliedly recognized the record owners' potential claim or intended to claim only to the true property line, then possession is deemed adverse].)