public void Initializes()
{
var source = new ObservableCollection <Model <int> > {
Model.Create(1), Model.Create(2),
};
using (var indexed = source.AsMappingView(
Vm.Create,
(x, i) => x.WithIndex(i)))
{
using (var indexedUpdating = source.AsMappingView(
Vm.Create,
(x, i) => x.WithIndex(i)))
{
using (var indexedNewing = source.AsMappingView(
Vm.Create,
(x, i) => Vm.Create(x.Model, i)))
{
var views = new[]
{
indexed,
indexedUpdating,
indexedNewing,
};
foreach (var view in views)
{
CollectionAssert.AreEqual(source, view.Select(x => x.Model));
CollectionAssert.AreEqual(source.Select((_, i) => i), view.Select(x => x.Index));
}
}
}
}
}
public void NewsOnRemoveTwoItems(int removeAt)
{
var source = new ObservableCollection <Model <int> > {
Model.Create(1), Model.Create(2)
};
using (var view = source.AsMappingView(
Vm.Create,
(x, i) => Vm.Create(x.Model, i)))
{
source.RemoveAt(removeAt);
Assert.AreEqual(1, view.Count);
Assert.AreSame(source[0], view[0].Model);
Assert.AreEqual(0, view[0].Index);
}
}
