public Form1()
{
InitializeComponent();
//Instantiate sub+obs
ws = new WeatherSubject();
tObs = new TemperatureObserver(lbTemp, ws);
aObs = new AverageObserver(lbAverages, ws);
fObs = new ForeCastObserver(lbForecast, ws);
}
public void ForecastObs_UpdateValues_ReturnsExpected()
{
//Create needed objects
ListBox lb = new ListBox();
WeatherSubject ws = new WeatherSubject();
ForeCastObserver fcObs = new ForeCastObserver(lb,ws);
//Update tobs with some values
fcObs.Update(1, 1, 1);
//Just test on temperature, for full code coverage id need:
//~3 tests to cover each branch of temperature-related strings
//*3 for the amount of forecast options (temp,humid,baro)
string expected = "Nippy";
string actual = fcObs.Temp;
Assert.AreEqual(expected, actual);
}
public void ObserverList_AddObserver_ReturnsExpected()
{
//Create needed objects
ListBox lb = new ListBox();
WeatherSubject ws = new WeatherSubject();
List<IWeatherObserver> obList = new List<IWeatherObserver>();
//Make 2 observers, do not manually add these
//Their ctor adds them to the passed subject
ForeCastObserver fcObs1 = new ForeCastObserver(lb, ws);
ForeCastObserver fcObs2 = new ForeCastObserver(lb, ws);
//Expected size of list
int expected = 2;
int actual = ws.ObsList.Count;
//Check observer was added to observer list properly
Assert.AreEqual(expected, actual);
}
public void ObserverList_RemoveObserver_ReturnsExpected()
{
//Create needed objects
ListBox lb = new ListBox();
WeatherSubject ws = new WeatherSubject();
List<IWeatherObserver> obList = new List<IWeatherObserver>();
//Make 2 observers, do not manually add these
//Their ctor adds them to the passed subject
ForeCastObserver fcObs1 = new ForeCastObserver(lb, ws);
ForeCastObserver fcObs2 = new ForeCastObserver(lb, ws);
//Remove one from the list, decoupling the observer
//this makes it essentially inactive
ws.RemoveObserver(fcObs2);
//Expected size of list
int expected = 1;
int actual = ws.ObsList.Count;
//Check observer was added to observer list properly
Assert.AreEqual(expected, actual);
}
