public void Test1()
{
var dl = new List <TestItemDM>(new [] { new TestItemDM(0) });
var bl = new ListBM <TestItemBM> {
Metadata = { DataProvider = { Data = dl } }
};
var vl = new ListVM <TestItemVM> {
Metadata = { DataProvider = { Data = bl } }
};
dl = new List <TestItemDM>(new [] { new TestItemDM(1) });
bl = new ListBM <TestItemBM> {
Metadata = { DataProvider = { Data = dl } }
};
TestItemVM oldFirst = vl.FirstOrDefault();
TestItemVM newfirst = null;
vl.CollectionChanged += delegate { newfirst = vl.FirstOrDefault(); };
vl.Metadata.DataProvider.Data = bl;
var oldFirstTypeInstanceId = oldFirst.TypeInstanceId();
var newFirstTypeInstanceId = newfirst.TypeInstanceId();
Assert.AreEqual(newFirstTypeInstanceId, oldFirstTypeInstanceId + 1);
}