public void AreaModelNotIsValid()
        {
            // Arrange
            HomeController controller = new HomeController();
            controller.ModelState.AddModelError("Test", "Test");
            // Act
            ViewResult result = controller.Area(new Triangle()) as ViewResult;

            // Assert
            Assert.IsNotNull(result);
        }
        public void Area()
        {
            // Arrange
            HomeController controller = new HomeController();

            // Act
            ViewResult result = controller.Area(new Triangle()) as ViewResult;

            // Assert
            Assert.IsNotNull(result);
        }