public void CopyToWorksWithItemsSource()
{
var collection = new ItemsSourceCollection();
var itemsSource = CreateIntItemsSource(5);
int[] dest = new int[itemsSource.Length + 1];
collection.ItemsSource = itemsSource;
collection.CopyTo(dest, 1);
Assert.Equal(0, dest[0]);
Assert.True(collection.Cast <int>().SequenceEqual(dest.Skip(1)));
}
public void CopyToWorksWithNonEnumerableItemsSource()
{
var collection = new ItemsSourceCollection();
var itemsSource = CreateNonEnumerableItemsSource();
var dest = new object[3];
collection.ItemsSource = itemsSource;
collection.CopyTo(dest, 1);
Assert.Equal(itemsSource, dest[1]);
Assert.Null(dest[0]);
Assert.Null(dest[2]);
}
public void CopyToWorksWithDefaultCollection()
{
var collection = new ItemsSourceCollection()
{
1, 2, 3, 4, 5
};
int[] dest = new int[collection.Count + 1];
collection.CopyTo(dest, 1);
Assert.Equal(0, dest[0]);
Assert.True(collection.Cast <int>().SequenceEqual(dest.Skip(1)));
}