What is the test for a federal judge to exercise power under Article III of the Constitution?

There are three requirements that must be met to establish a case or controversy calling for the exercise of federal judicial power under Article III of the Constitution: first, the plaintiff must have suffered an injury in fact--an injury that is actual or imminent, not hypothetical or conjectural, is concrete and is seen to "affect the plaintiff in a personal and individual way," Lujan v. Defenders of Wildlife, 504 U.S. 555, 560 & n. 1, 112 S.Ct. 2130, 2136 & n. 1, 119 L.Ed.2d 351 (1992); second, the injury must be fairly traceable to the defendant's challenged action and not caused by the independent action of a third party, id. at 560, 112 S.Ct. at 2136; and third, it must be likely, not just possible, that the injury will be redressed by a favorable court ruling, id. at 561, 112 S.Ct. at 2136-37.