public void JsonFileTest()
        {
            string GovAppId  = "GovAppId123";
            string GovAPIKey = "GovAPIKey123";
            string IsMockAPI = "IsMockAPI123";

            Dictionary <string, string> apiUrlTable = new Dictionary <string, string>()
            {
                { "ApiURL1", "ApiURL1" },
                { "ApiURL2", "ApiURL2" },
                { "ApiURL3", "ApiURL3" }
            };

            string     JsonData       = @"{
	""GovAppId"":""GovAppId123"",
	""GovAPIKey"":""GovAPIKey123"",
	""IsMockAPI"":""IsMockAPI123"",
	""ApiURLTable"":{
		""ApiURL1"":""ApiURL1"",
		""ApiURL2"":""ApiURL2"",
		""ApiURL3"":""ApiURL3""
	}
}";
            JsonConfig config         = new JsonConfig(JsonData);
            var        actApiUrlTable = config.GetApiURLTable();

            Assert.AreEqual(config.GovAppId, GovAppId);
            Assert.AreEqual(config.GovAPIKey, GovAPIKey);
            Assert.AreEqual(config.IsMockAPI, IsMockAPI);
            Assert.AreEqual(actApiUrlTable["ApiURL1"], apiUrlTable["ApiURL1"]);
            Assert.AreEqual(actApiUrlTable["ApiURL2"], apiUrlTable["ApiURL2"]);
            Assert.AreEqual(actApiUrlTable["ApiURL3"], apiUrlTable["ApiURL3"]);
        }