public void Controller_Quiz_Check()
{
// Arrange
var controller = new QuizController();
var word = new WordQuiz();
word.English = "Day";
word.Czech = "Den";
// Act
var jsonResult = controller.CheckWord(word) as JsonResult;
// Assert
Assert.IsNotNull(jsonResult, "Expected a non-null PartialViewResult");
Assert.IsInstanceOfType(jsonResult.Data, typeof(bool), "Expected a bool result");
}