public void VerifyIndexOfBehavior()
{
RunOnUIThread.Execute(() =>
{
var collections = new List <IEnumerable>();
collections.Add(new ObservableVectorWithUniqueIds(Enumerable.Range(0, 10)));
collections.Add(new ObservableCollection <int>(Enumerable.Range(0, 10)));
foreach (var collection in collections)
{
var dataSource = new ItemsSourceView(collection);
foreach (int i in collection)
{
Verify.AreEqual(i, dataSource.IndexOf(i));
}
Verify.AreEqual(-1, dataSource.IndexOf(11));
}
// Enumerabl.Range returns IEnumerable which does not provide IndexOf
var testingItemsSourceView = new ItemsSourceView(Enumerable.Range(0, 10));
var index = -1;
try
{
index = testingItemsSourceView.IndexOf(0);
}catch (Exception) { }
Verify.AreEqual(-1, index);
var nullContainingEnumerable = new CustomEnumerable();
testingItemsSourceView = new ItemsSourceView(nullContainingEnumerable);
Verify.AreEqual(1, testingItemsSourceView.IndexOf(null));
});
}
public void VerifyReadOnlyListCompatibility()
{
RunOnUIThread.Execute(() =>
{
var collection = new ReadOnlyNotifyPropertyChangedCollection <object>();
var firstItem = "something1";
collection.Data = new ObservableCollection <object>();
collection.Data.Add(firstItem);
collection.Data.Add("something2");
collection.Data.Add("something3");
var itemsSourceView = new ItemsSourceView(collection);
Verify.AreEqual(3, itemsSourceView.Count);
collection.Data.Add("something4");
Verify.AreEqual(4, itemsSourceView.Count);
Verify.AreEqual(firstItem, itemsSourceView.GetAt(0));
Verify.AreEqual(0, itemsSourceView.IndexOf(firstItem));
});
}