public void RaisesListChangedEventOnAdd()
{
var target = new ReactiveBindingList<string>();
var capturedEvents = new List<ListChangedEventArgs>();
target.ListChanged += (o, e) => { capturedEvents.Add(e); };
target.Add("item");
Assert.Equal(1,capturedEvents.Count);
Assert.True(capturedEvents[0].ListChangedType == ListChangedType.ItemAdded);
Assert.True(capturedEvents[0].NewIndex == 0);
}
public void RaisesListChangedEventOnAdd()
{
var target = new ReactiveBindingList <string>();
var capturedEvents = new List <ListChangedEventArgs>();
target.ListChanged += (o, e) => { capturedEvents.Add(e); };
target.Add("item");
Assert.Equal(1, capturedEvents.Count);
Assert.True(capturedEvents[0].ListChangedType == ListChangedType.ItemAdded);
Assert.True(capturedEvents[0].NewIndex == 0);
}
public void DerivedCollectionsShouldRaiseListChangedEvents()
{
var input = new[] { "Foo", "Bar", "Baz", "Bamf" };
var fixture = new ReactiveBindingList <TestFixture>(
input.Select(x => new TestFixture()
{
IsOnlyOneWord = x
}));
IBindingList output = fixture.CreateDerivedBindingList(new Func <TestFixture, string>(x => x.IsOnlyOneWord));
var capturedEvents = new List <ListChangedEventArgs>();
output.ListChanged += (o, e) => capturedEvents.Add(e);
input.AssertAreEqual((IEnumerable <string>)output);
fixture.Add(new TestFixture()
{
IsOnlyOneWord = "Hello"
});
Assert.Equal(capturedEvents.Last().ListChangedType, ListChangedType.ItemAdded);
Assert.Equal(5, output.Count);
Assert.Equal("Hello", output[4]);
fixture.RemoveAt(4);
Assert.Equal(capturedEvents.Last().ListChangedType, ListChangedType.ItemDeleted);
Assert.Equal(4, output.Count);
//replacing results in
//1 itemdeleted
//2 itemadded
fixture[1] = new TestFixture()
{
IsOnlyOneWord = "Goodbye"
};
Assert.Equal(4, output.Count);
Assert.Equal("Goodbye", output[1]);
Assert.Equal(capturedEvents[capturedEvents.Count - 2].ListChangedType, ListChangedType.ItemDeleted);
Assert.Equal(capturedEvents[capturedEvents.Count - 1].ListChangedType, ListChangedType.ItemAdded);
fixture.Clear();
Assert.Equal(0, output.Count);
Assert.Equal(capturedEvents.Last().ListChangedType, ListChangedType.Reset);
}