def test_specific_plane_to_takeoff(self):
jfk = Airport()
jfk.dock("Plane A")
jfk.dock("Plane B")
jfk.takeoff("Plane A")
self.assertEqual(jfk.docked[0], "Plane B")
def test_takeoff_removes_plane_from_docked(self):
jfk = Airport()
jfk.dock("Plane")
jfk.takeoff()
self.assertEqual(len(jfk.docked), 0)