public void WhenCreateDisplayExpectWeatherDataObserverListHasOneObserver()
{
var weatherData = new WeatherData();
var currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
Assert.AreEqual(1, weatherData.Observers.Count);
}
private static void TestObserverPattern()
{
WeatherData weatherData = new WeatherData();
TemperatureReporter temperatureReporter = new TemperatureReporter();
CurrentConditionsDisplay currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
StatisticsDisplay statisticsDisplay = new StatisticsDisplay(weatherData);
ForecastDisplay forecastDisplay = new ForecastDisplay(weatherData);
HeatIndexDisplay heatIndexDisplay = new HeatIndexDisplay(weatherData);
CurrentTemperatureDisplay currentTemperatureDisplay = new CurrentTemperatureDisplay(temperatureReporter);
Temperature t = new Temperature {
Temp = 80
};
temperatureReporter.TemperatureChanged(t);
t.Temp = 82;
temperatureReporter.TemperatureChanged(t);
Console.WriteLine(currentTemperatureDisplay.Display());
t.Temp = 78;
temperatureReporter.TemperatureChanged(t);
Console.WriteLine(currentTemperatureDisplay.Display());
weatherData.SetMeasurements(80, 65, 30.4);
weatherData.SetMeasurements(82, 70, 29.2);
weatherData.SetMeasurements(78, 90, 29.2);
Console.WriteLine(currentConditionsDisplay.Display());
Console.WriteLine(statisticsDisplay.Display());
Console.WriteLine(forecastDisplay.Display());
Console.WriteLine(heatIndexDisplay.Display());
}
private void btnAdd1_Click(object sender, RoutedEventArgs e)
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurements(10, 20, 30);
}
/// <summary>
/// The Observer Pattern defines a one-to-many dependency between objects so that
/// when one object changes state, all of its dependents are notified and updated
/// automatically. Object which changes state is called - subject. Object which
/// subscribes to subject is called - observer.
///
/// This project uses built in observer pattern.
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
var wd = new WeatherData();
var disp = new CurrentConditionsDisplay();
using (wd.Subscribe(disp))
{
var wi = new WeatherInfo
{
Humidity = 80,
Pressure = 65,
Temperature = 30.4f
};
wd.WeatherInfo = wi;
Thread.Sleep(2000);
wi = new WeatherInfo
{
Humidity = 85,
Pressure = 65,
Temperature = 31.4f
};
wd.WeatherInfo = wi;
wd.Unsubscribe(disp);
Thread.Sleep(2000);
wi = new WeatherInfo
{
Humidity = 60,
Pressure = 65,
Temperature = 29.4f
};
wd.WeatherInfo = wi;
}
}
static void Main(string[] args)
{
CurrentConditionsDisplay display_1, display_2;
// Create Publisher:
WeatherData weatherData = new WeatherData();
// Create and register first observer:
display_1 = new CurrentConditionsDisplay("First text display");
display_1.Subscribe(weatherData);
// Create and register first observer:
display_2 = new CurrentConditionsDisplay("Second text display");
display_2.Subscribe(weatherData);
// Simulate availability of new measurements:
weatherData.SetMeasurement(new Measurement(15.0f, 44.2f, 1020.0f));
weatherData.SetMeasurement(new Measurement(16.5f, 48.9f, 1015.0f));
weatherData.SetMeasurement(new Measurement(16.2f, 47.3f, 1025.0f));
// Remove first observer from observable's notification list:
display_1.Unsubscribe();
// Simulate availability of new measurements again:
weatherData.SetMeasurement(new Measurement(18.0f, 50.0f, 980.0f));
// Keap console open:
ReadLine();
} // Main
public void WeatherStation()
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
}
public static void Main(string[] args) {
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.setMeasurements(80, 65, 30.4f);
weatherData.setMeasurements(82, 70, 29.2f);
weatherData.setMeasurements(78, 90, 29.2f);
}
public ObserverWeatherDataUnitTest()
{
_weatherData = new WeatherData();
_currentConditionsDisplay = new CurrentConditionsDisplay(_weatherData);
_forcastDisplay = new ForcastDisplay(_weatherData);
_statisticsDisplay = new StatisticsDisplay(_weatherData);
_heatIndexDisplay = new HeatIndexDisplay(_weatherData);
}
public static void Main()
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.Subscribe(weatherStation);
weatherStation.start();
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
SimpleForecastDisplay simpleForecast = new SimpleForecastDisplay(weatherData);
WeatherStatisticsDisplay weatherStatistics = new WeatherStatisticsDisplay(weatherData);
CurrentConditionsDisplay currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.StartObtainingData();
}
public void WhenCreateCurrentConditionsDisplayAndCallSetMeasurementsMethodExpectDisplayMethodReturnCurrentConditionsMessage()
{
var weatherData = new WeatherData();
var currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurements(80, 50, 80);
Assert.AreEqual("Current conditions: 80 F degrees and 50 % humidity", currentConditionsDisplay.Display());
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
weatherData.SetMeasurements(82, 70, 29.2f);
weatherData.SetMeasurements(78, 90, 29.2f);
}
public void WhenCreateDisplayAndCallRemoveObserverExpectWeatherDataObserverListIsEmpty()
{
var weatherData = new WeatherData();
var currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.RemoveObserver(currentConditionsDisplay);
Assert.AreEqual(0, weatherData.Observers.Count);
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
HeatIndexDisplay heatIndexDisplay = new HeatIndexDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay display = new CurrentConditionsDisplay(weatherData);
WeatherStation weatherStation = new WeatherStation(weatherData);
weatherStation.start();
}
public static void Test()
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.setMeasurements(80, 65, 30.4f);
weatherData.setMeasurements(82, 70, 29.2f);
weatherData.setMeasurements(78, 90, 29.2f);
}
public void ShouldObserveUpdate()
{
var weatherData = new WeatherData();
var currentDisplay = new CurrentConditionsDisplay(weatherData);
var forecastDisplay = new ForecastDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
}
static void Main()
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
AnotherDisplay heatDisplay = new AnotherDisplay(weatherData);
weatherData.SetMeasurments(80, 65, 30.4f);
weatherData.SetMeasurments(82, 70, 29.8f);
weatherData.SetMeasurments(78, 90, 29.7f);
}
public void WeatherData_CanRemoveObservers()
{
WeatherData weatherData = new WeatherData();
IWeatherObserver statisticsDisplay = new StatisticsDisplay(weatherData);
IWeatherObserver forecastDisplay = new ForecastDisplay(weatherData);
IWeatherObserver conditionsDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.RemoveObserver(statisticsDisplay);
Assert.AreEqual(2, weatherData.SubscriberCount);
}
public void WeatherData_ShouldBeEmpty_WhenUnregisterObservers()
{
//Arrange
var weather = new WeatherData();
var display = new CurrentConditionsDisplay(weather);
weather.UnregisterObserver(display);
//Assert
weather.Observers.Should().BeEmpty();
}
static void RunObserver()
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
weatherData.SetMeasurements(82, 70, 29.2f);
weatherData.SetMeasurements(78, 90, 29.2f);
Console.ReadKey();
}
public static void Run()
{
var weatherData = new WeatherData();
var currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
var forecastDisplay = new ForecastDisplay(weatherData);
var statisticsDisplay = new StatisticsDisplay(weatherData);
weatherData.SetMeasurements(30, 80, 50);
weatherData.SetMeasurements(15, 80, 0);
weatherData.SetMeasurements(25, 50, 0);
}
public static void Start()
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
StatisticsDisplay statisticsDisplay = new StatisticsDisplay(weatherData);
ForecastDisplay forecastDisplay = new ForecastDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
weatherData.SetMeasurements(82, 70, 29.2f);
weatherData.SetMeasurements(78, 90, 29.2f);
}
static void Main(string[] args)
{
var weatherData = new WeatherData();
var currentDisplay = new CurrentConditionsDisplay(weatherData);
var heatDisplay = new HeatIndexDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4F);
weatherData.SetMeasurements(82, 70, 29.2F);
weatherData.SetMeasurements(78, 90, 29.2F);
}
private static void Main()
{
var weatherData = new WeatherData();
var currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurement(10, 90, 80);
weatherData.SetMeasurement(12, 85, 75);
Console.WriteLine("Press any key to exit");
Console.ReadKey();
}
public void UpdateObservers()
{
WeatherData wd = new WeatherData();
IObserver fd = new ForecastDisplay(wd);
IObserver sd = new StatisticsDisplay(wd);
IObserver ccd = new CurrentConditionsDisplay(wd);
IObserver hi = new HeatIndexDisplay(wd);
wd.SetMeasurements(5.5f, 200f, 0.05f);
}
public void WhenCreateDisplayAndCallSetMeasurementsMethodExpectAllObserversAreNotified()
{
var weatherData = new WeatherData();
var currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
var forecastDisplay = new ForecastDisplay(weatherData);
weatherData.SetMeasurements(80, 50, 80);
Assert.AreEqual("Current conditions: 80 F degrees and 50 % humidity", currentConditionsDisplay.Display());
Assert.AreEqual("Forecast: Improving weather on the way!", forecastDisplay.Display());
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
StatisticsDisplay statsDisplay = new StatisticsDisplay(weatherData);
ForecastDisplay forecastDisplay = new ForecastDisplay(weatherData);
weatherData.setMeasurements(80, 65, 30.4f);
weatherData.setMeasurements(82, 70, 29.2f);
weatherData.setMeasurements(78, 90, 29.2f);
}
static void Main(string[] args)
{
var station = new WeatherData();
var display = new CurrentConditionsDisplay(station);
station.SetMeasurements("24", "70", "1024");
station.SetMeasurements("25", "60", "1024");
station.SetMeasurements("26", "50", "1024");
station.SetMeasurements("27", "40", "1024");
Console.ReadKey();
}
public void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
StatisticsDisplay statisticsDisplay = new StatisticsDisplay(weatherData);
ForecastDisplay forecastDisplay = new ForecastDisplay(weatherData);
HeatIndexDisplay heatIndexDisplay = new HeatIndexDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
weatherData.SetMeasurements(82, 70, 29.2f);
weatherData.SetMeasurements(78, 90, 29.2f);
}
static void Main(string[] args)
{
var data = new WeatherData();
var display1 = new CurrentConditionsDisplay(data);
var display2 = new ForecastDisplay(data);
var display3 = new StatisticsDisplay(data);
var display4 = new HeatIndexDisplay(data);
data.SetMeasurements(21.3f, 23.1f, 52.4f);
data.SetMeasurements(42.3f, 33.1f, 52.4f);
data.SetMeasurements(19.3f, 63.1f, 52.4f);
data.SetMeasurements(80.0f, 0.4f, 0f);
}
private static void ObserverPattern()
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentConditionsDisplay = new CurrentConditionsDisplay(weatherData);
StatisticsDisplay statisticsDisplay = new StatisticsDisplay(weatherData);
ForecastDisplay forecastDisplay = new ForecastDisplay(weatherData);
HeatIndexDisplay heatIndexDisplay = new HeatIndexDisplay(weatherData);
weatherData.setMeasurements(80, 65, 30.4f);
weatherData.setMeasurements(82, 70, 29.2f);
weatherData.setMeasurements(78, 90, 29.2f);
}
public static void Main(string[] args) {
WeatherObservable weatherReporter = new WeatherObservable();
WeatherData wd = new WeatherData();
wd.SetMeasurements(48.0f, .50f, 10.0f);
CurrentConditionsDisplay display = new CurrentConditionsDisplay();
using (IDisposable disposable = weatherReporter.Subscribe(display)) {
weatherReporter.UpdateWeather(wd, false);
wd = new WeatherData();
wd.SetMeasurements(105.0f, .89f, 32.0f);
weatherReporter.UpdateWeather(wd, false);
wd = new WeatherData();
wd.SetMeasurements(17.5f, .16f, 12.0f);
weatherReporter.UpdateWeather(wd, false);
weatherReporter.CloseAllStationReports();
}
}
public static void Main(string[] args)
{
WeatherMonitor monitor = new WeatherMonitor();
ForecastDisplay forecast = new ForecastDisplay();
CurrentConditionsDisplay currentConditions = new CurrentConditionsDisplay();
StatisticsDisplay statistics = new StatisticsDisplay();
HeatIndexDisplay heatIndex = new HeatIndexDisplay();
monitor.SetMeasurments(new WeatherData(80, 65, 30.4f));
forecast.Subscribe(monitor);
currentConditions.Subscribe(monitor);
statistics.Subscribe(monitor);
heatIndex.Subscribe(monitor);
monitor.SetMeasurments(new WeatherData(82, 70, 29.2f));
statistics.Unsubscribe();
monitor.SetMeasurments(new WeatherData(78, 90, 29.2f));
monitor.SetMeasurments(null);
//weatherData.SetMeasurments(82, 70, 29.2f);
//weatherData.SetMeasurments(78, 90, 29.2f);
Console.ReadLine();
}
