public void When_Subscribed_Then_OnNext_Changes()
{
// Arrange
var obj = new TestObservableObject {ObservableChild = new TestObservableObject {Age = 3}};
var replacementChild = new TestObservableObject {Age = 5};
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver<TestObservableObject>();
var expected = new[]
{
OnNext(000, obj.ObservableChild),
OnNext(010, replacementChild),
OnNext(010, replacementChild),
OnNext(020, replacementChild),
};
var sut = obj.WhenAny(x => x.ObservableChild).ForProperty<TestObservableObject>("Age", "Name");
// Act
sut.Subscribe(observer);
scheduler.AdvanceTo(10);
obj.ObservableChild = replacementChild;
obj.ObservableChild.Age = 17;
scheduler.AdvanceTo(20);
obj.ObservableChild.Name = "Billy";
// Assert
Assert.AreEqual(expected, observer.Messages);
}
public void When_Subscribe_To_Property_With_Broken_Path_Then_OnNext_Initial_Image_With_Null_Source()
{
// Arrange
var obj = new TestObservableObject();
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver<IPropertyChanged<TestObservableObject>>();
var expected = new[]
{
OnNext(000, PropertyChanged.Create(default(TestObservableObject))),
};
var sut = obj.WhenAny(x => x.PocoChild.ObservableChild);
// Act
sut.Subscribe(observer);
// Assert
Assert.AreEqual(expected, observer.Messages);
}
public void When_Subscribe_With_One_Node_Path_To_Property_Then_OnNext_Initial_Image_And_Changes()
{
// Arrange
var obj = new TestObservableObject {Age = 5};
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver<IPropertyChanged<TestObservableObject>>();
var expected = new[]
{
OnNext(000, PropertyChanged.Create(obj)),
OnNext(000, PropertyChanged.Create(obj, "Age")),
};
var sut = obj.WhenAny();
// Act
sut.Subscribe(observer);
obj.Age = 10;
// Assert
Assert.AreEqual(expected, observer.Messages);
}
public void When_Subscribe_With_Two_Node_Path_To_Property_And_Modify_Node_One_Then_OnNext_Changes()
{
// Arrange
var obj = new TestObservableObject {ObservableChild = new TestObservableObject {Age = 3}};
var replacementChild = new TestObservableObject {Age = 5};
var scheduler = new TestScheduler();
var observer = scheduler.CreateObserver<IPropertyChanged<TestObservableObject>>();
var expected = new[]
{
OnNext(000, PropertyChanged.Create(obj.ObservableChild)),
OnNext(010, PropertyChanged.Create(replacementChild)),
OnNext(010, PropertyChanged.Create(replacementChild, "Age")),
};
var sut = obj.WhenAny(x => x.ObservableChild);
// Act
sut.Subscribe(observer);
scheduler.AdvanceTo(10);
obj.ObservableChild = replacementChild;
obj.ObservableChild.Age = 17;
// Assert
Assert.AreEqual(expected, observer.Messages);
}