public void When_Source_Observable_Completes_Then_Completes()
{
// Arrange
var scheduler = new TestScheduler();
var sourceObs = scheduler.CreateColdObservable(
OnCompleted<IPropertyValueChanged<TestObservableObject>>(40)
);
var observer = scheduler.CreateObserver<IPropertyChanged<TestObservableObject>>();
var expected = new[]
{
OnCompleted<IPropertyChanged<TestObservableObject>>(40)
};
var sut = new NotifyPropertyChangedObservable<TestObservableObject>(sourceObs);
// Act
sut.Subscribe(observer);
scheduler.Start();
// Assert
Assert.AreEqual(expected, observer.Messages);
}
public void When_Subscribe_Then_Returns_Default_Value_At_Time_Of_Subscribe_And_Subsequent_Values()
{
// Arrange
var obj = new TestObservableObject() {Age = 2};
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver<IPropertyChanged<TestObservableObject>>();
var expected = new[]
{
OnNext(00, PropertyChanged.Create(obj)),
OnNext(20, PropertyChanged.Create(obj, "Age")),
OnNext(30, PropertyChanged.Create(obj, "Age")),
OnNext(40, PropertyChanged.Create(obj, "Name")),
};
var sut = new NotifyPropertyChangedObservable<TestObservableObject>(obj.ToPropertyValueChangedObservable());
// Act
sut.Subscribe(observer);
scheduler.AdvanceTo(20);
obj.Age = 3;
scheduler.AdvanceTo(30);
obj.Age = 7;
scheduler.AdvanceTo(40);
obj.Name = "Fi";
// Assert
Assert.AreEqual(expected, observer.Messages);
}
public void When_Subscribe_Twice_Then_Correct_Notifications_For_Both_Observers()
{
// Arrange
var obj = new TestObservableObject {Age = 3};
var scheduler = new TestScheduler();
var firstObserver = scheduler.CreateObserver<IPropertyChanged<TestObservableObject>>();
var secondObserver = scheduler.CreateObserver<IPropertyChanged<TestObservableObject>>();
var firstObservserExpected = new[]
{
OnNext(0, PropertyChanged.Create(obj)),
OnNext(0, PropertyChanged.Create(obj, "Age")),
OnNext(20, PropertyChanged.Create(obj, "Age")),
OnNext(50, PropertyChanged.Create(obj, "Age")),
};
var secondObservserExpected = new[]
{
OnNext(50, PropertyChanged.Create(obj)),
OnNext(50, PropertyChanged.Create(obj, "Age")),
};
var sut = new NotifyPropertyChangedObservable<TestObservableObject>(obj.ToPropertyValueChangedObservable());
// Act
sut.Subscribe(firstObserver);
obj.Age = 5;
scheduler.AdvanceTo(20);
obj.Age = 6;
scheduler.AdvanceTo(50);
sut.Subscribe(secondObserver);
obj.Age = 7;
// Assert
Assert.AreEqual(firstObservserExpected, firstObserver.Messages);
Assert.AreEqual(secondObservserExpected, secondObserver.Messages);
}