What is the test for qualified immunity for Fourth Amendment violations under the Fourth Amendment?

This court reviews claims and denials of claims of qualified immunity for Fourth Amendment violations under the teaching of Harlow v. Fitzgerald, 457 U.S. 800 (1982). A government official, such as an institutional executive of a state university, will be entitled to immunity for discretionary actions and orders in the conduct of his or her office so long as the actions or orders do not violate clearly established statutory or constitutional rights of which a reasonable person would have knowledge. 457 U.S. at 818.