public void AddTestSuccessTest()
 {
     using (var db = GetContext())
     {
         var controller = new PersonController(db);
         var station    = db.TestStations.First();
         var person     = db.Persons.First();
         var countOld   = db.Tests.Count();
         var result     = controller.AddTest(person.Id, new PersonController.TestterminDto
         {
             Station   = station.StationName,
             TimeStamp = new DateTime(2021, 6, 1, 13, 0, 0)
         }) as NoContentResult;
         Assert.NotNull(result);
         Assert.True(db.Tests.Count() == countOld + 1);
     }
 }