public void ToStringRepresentationShouldGenerateCorrectJsonString()
        {
            string playerJson = "{\"Name\":\"Mara\",\"Score\":1024}";
            var jsonManager = new JsonManager();
            var mara = new Player()
            {
                Name = "Mara",
                Score = 1024
            };

            string stringMara = jsonManager.ToStringRepresentation(mara);

            Assert.AreEqual(playerJson, stringMara);
        }