public void StopsSubscribing()
{
var collection1 = new ObservableCollection <Fake> {
new Fake {
Name = "Johan"
}
};
var fake = new FakeWithCollection {
Collection = collection1
};
fake.ObservePropertyChangedWithValue(x => x.Collection, true)
.ItemPropertyChanged(x => x.Name)
.Subscribe(_changes.Add);
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(collection1[0], "Name", collection1[0], "Johan", _changes.Last());
fake.Collection = null;
Assert.AreEqual(1, _changes.Count);
collection1[0].Name = "new";
Assert.AreEqual(1, _changes.Count);
var collection2 = new ObservableCollection <Fake> {
new Fake {
Name = "Kurt"
}
};
fake.Collection = collection2;
Assert.AreEqual(2, _changes.Count);
AssertRx.AreEqual(collection2[0], "Name", collection2[0], "Kurt", _changes.Last());
}
public void ReactsToReplace()
{
var item1 = new Fake {
Name = "1"
};
var item2 = new Fake {
Name = "2"
};
var collection = new ObservableCollection <Fake> {
item1, item2
};
var subscription = collection.ObserveItemPropertyChanged(x => x.Name, false)
.Subscribe(_changes.Add);
CollectionAssert.IsEmpty(_changes);
var item3 = new Fake()
{
Name = "3"
};
collection[0] = item3;
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(item3, "Name", item3, "3", _changes.Last());
item1.Name = "new";
Assert.AreEqual(1, _changes.Count); // Stopped subscribing
}
public void ReactsNested()
{
var item1 = new Fake {
Next = new Level {
Name = "1"
}
};
var item2 = new Fake();
var collection = new ObservableCollection <Fake> {
item1, item2
};
var subscription = collection.ObserveItemPropertyChanged(x => x.Next.Name, false)
.Subscribe(_changes.Add);
CollectionAssert.IsEmpty(_changes);
item1.Next.Name = "new1";
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(item1.Next, "Name", item1, "new1", _changes.Last());
item2.Next = new Level {
Name = "new2"
};
Assert.AreEqual(2, _changes.Count);
AssertRx.AreEqual(item2.Next, "Name", item2, "new2", _changes.Last());
}
public void HandlesNullItem()
{
var item = new Fake {
Name = "1"
};
var collection = new ObservableCollection <Fake> {
item, null
};
var subscription = collection.ObserveItemPropertyChanged(x => x.Name, false)
.Subscribe(_changes.Add);
CollectionAssert.IsEmpty(_changes);
collection.Add(null);
Assert.AreEqual(3, collection.Count);
Assert.AreEqual(0, _changes.Count);
item.Name = "new";
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(item, "Name", item, "new", _changes.Last());
var item2 = new Fake {
Name = "2"
};
collection[1] = item2;
Assert.AreEqual(2, _changes.Count);
AssertRx.AreEqual(item2, "Name", item2, "2", _changes.Last());
}
public void ReactsValue()
{
var fake = new Fake {
Value = 1
};
fake.ObservePropertyChanged()
.Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
fake.Value++;
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(fake, "Value", _changes.Last());
}
public void ReactsOnEventDerived()
{
var fake = new DerivedFake {
Value = 1
};
fake.ObservePropertyChanged()
.Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
fake.OnPropertyChanged("SomeProp");
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(fake, "SomeProp", _changes.Last());
}
public void ReactsOnceWhenSameItemIsTwoElementsInCollection()
{
var item = new Fake {
Name = "1"
};
var collection = new ObservableCollection <Fake> {
item, item
};
var subscription = collection.ObserveItemPropertyChanged(x => x.Name, false)
.Subscribe(_changes.Add);
CollectionAssert.IsEmpty(_changes);
item.Name = "new";
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(item, "Name", item, "new", _changes.Last());
}
public void SignalsOnSubscribe()
{
var collection = new ObservableCollection <Fake> {
new Fake {
Name = "Johan"
}
};
var fake = new FakeWithCollection {
Collection = collection
};
fake.ObservePropertyChangedWithValue(x => x.Collection, true)
.ItemPropertyChanged(x => x.Name)
.Subscribe(_changes.Add);
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(collection[0], "Name", collection[0], "Johan", _changes.Last());
}
public void SignalsInitial()
{
var item1 = new Fake {
Name = "1"
};
var item2 = new Fake {
Name = "2"
};
var collection = new ObservableCollection <Fake> {
item1, item2
};
var subscription = collection.ObserveItemPropertyChanged(x => x.Name, true)
.Subscribe(_changes.Add);
Assert.AreEqual(2, _changes.Count);
AssertRx.AreEqual(item1, "Name", item1, "1", _changes[0]);
AssertRx.AreEqual(item2, "Name", item2, "2", _changes[1]);
}
public void ReactsNullable()
{
var fake = new Fake {
IsTrueOrNull = null
};
var observable = fake.ObservePropertyChanged();
var disposable = observable.Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
fake.IsTrueOrNull = true;
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(fake, "IsTrueOrNull", _changes.Last());
fake.IsTrueOrNull = null;
Assert.AreEqual(2, _changes.Count);
AssertRx.AreEqual(fake, "IsTrueOrNull", _changes.Last());
}
public void ReactsWhenPropertyChangesView()
{
var item1 = new Fake {
Name = "1"
};
var item2 = new Fake {
Name = "2"
};
var collection = new ObservableCollection <Fake> {
item1, item2
};
var view = collection.AsReadOnlyFilteredView(x => true);
view.ObserveItemPropertyChanged(x => x.Name, false)
.Subscribe(_changes.Add);
CollectionAssert.IsEmpty(_changes);
item1.Name = "new1";
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(item1, "Name", item1, "new1", _changes.Last());
item2.Name = "new2";
Assert.AreEqual(2, _changes.Count);
AssertRx.AreEqual(item2, "Name", item2, "new2", _changes.Last());
}
public void ReactsTwoInstancesValue()
{
var fake1 = new Fake {
Value = 1
};
fake1.ObservePropertyChanged()
.Subscribe(_changes.Add);
var fake2 = new Fake {
Value = 1
};
fake2.ObservePropertyChanged()
.Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
fake1.Value++;
Assert.AreEqual(1, _changes.Count);
AssertRx.AreEqual(fake1, "Value", _changes.Last());
fake2.Value++;
Assert.AreEqual(2, _changes.Count);
AssertRx.AreEqual(fake2, "Value", _changes.Last());
}
