// GET: KeyInfoes/Create
        public ActionResult Create()
        {
            var keyGenerator = new KeyCodeGenerator();
            var keyCode = keyGenerator.Generate(5);
            ViewBag.keyCode = keyCode;

            return View();
        }
        public void GenerateTests()
        {
            // arrange
            int length = 5;
            var keyGenerator = new KeyCodeGenerator();

            // act
            var keyCode = keyGenerator.Generate(length);

            // assert
            //Assert.IsNull(keyCode, "null error");
            Assert.AreEqual(keyCode.Length, length, "length error");
            Assert.IsFalse(db.KeyInfoes.Any(s => s.KeyCode == keyCode),"keyCode重複");
        }