public void GetCityWiseWeatherData_Test() { var controller = new WeatherController(); controller.Request = new HttpRequestMessage(); controller.Configuration = new HttpConfiguration(); List <string> citylist = new List <string> { "Mumbai", "New york", "Delhi", "London", "Moscow" }; var response = controller.GetCityWiseWeatherData(citylist); Assert.IsTrue(response.IsSuccessStatusCode); }