public void Can_add_observer()
{
CTestingDisplay.ResetUpdateCounter();
CWeatherData wd = new CWeatherData();
CTestingDisplay display1 = new CTestingDisplay();
wd.RegisterObserver(display1);
display1.SetTestingValues(3, 0.7, 760);
wd.SetMeasurements(3, 0.7, 760);
display1.CheckUpdateCounter(0);
}
public void When_identical_observers_are_set_next_one_isnt_added()
{
CTestingDisplay.ResetUpdateCounter();
CWeatherData wd = new CWeatherData();
CTestingDisplay display1 = new CTestingDisplay();
wd.RegisterObserver(display1, 2);
wd.RegisterObserver(display1, 1);
display1.SetTestingValues(3, 0.7, 760);
wd.SetMeasurements(3, 0.7, 760);
display1.CheckUpdateCounter(0);
}
public void When_priority_is_set_observers_updates_in_order_of_priority()
{
CTestingDisplay.ResetUpdateCounter();
CWeatherData wd = new CWeatherData();
CTestingDisplay display1 = new CTestingDisplay();
CTestingDisplay display2 = new CTestingDisplay();
CTestingDisplay display3 = new CTestingDisplay();
wd.RegisterObserver(display2, 2);
wd.RegisterObserver(display1, 1);
wd.RegisterObserver(display3, 3);
display1.SetTestingValues(3, 0.7, 760);
display2.SetTestingValues(3, 0.7, 760);
display3.SetTestingValues(3, 0.7, 760);
wd.SetMeasurements(3, 0.7, 760);
display1.CheckUpdateCounter(0);
display2.CheckUpdateCounter(1);
display3.CheckUpdateCounter(2);
}