What is the test for suppressing evidence derived from a governmental search and seizure?

" 'In California, issues relating to the suppression of evidence derived from governmental searches and seizures are reviewed under federal constitutional standards.' [Citations.] ' " 'We defer to the trial court's factual findings, express or implied, where supported by substantial evidence. In determining whether, on the facts so found, the search or seizure was reasonable under the Fourth Amendment, we exercise our independent judgment.' " ' [Citations.] [] 'The Fourth Amendment to the federal Constitution prohibits unreasonable searches and seizures.' [Citation.] ' "[T]he ultimate touchstone of the Fourth Amendment is 'reasonableness.' " [Citation.] Our cases have determined that "[w]here a search is undertaken by law enforcement officials to discover evidence of criminal wrongdoing, . . . reasonableness generally requires the obtaining of a judicial warrant." ' [Citations.] 'In the absence of a warrant, a search is reasonable only if it falls within a specific exception to the warrant requirement.' [Citation.] The burden is on the People to establish an exception applies. [Citations.]" (People v. Macabeo (2016) 1 Cal.5th 1206, 1212-1213.)