public void TestCaseAssumeNull()
{
var ocr = new ObservableCollectionRanged <string>();
ocr.AddRange(names1);
ocr.CollectionChanged += (sender, e) =>
{
Assert.IsTrue(e.Action == NotifyCollectionChangedAction.Reset);
Assert.IsNull(e.NewItems);
Assert.IsNull(e.OldItems);
};
ocr.AssumeRange(null);
}
public void TestCaseAssume()
{
var ocr = new ObservableCollectionRanged <string>();
ocr.AddRange(names1);
ocr.AddRange(names2);
ocr.CollectionChanged += (sender, e) =>
{
Assert.IsTrue(e.Action == NotifyCollectionChangedAction.Replace);
Assert.IsNotNull(e.NewItems);
Assert.IsNotNull(e.OldItems);
Assert.IsTrue(e.OldItems.Count == (names1.Count + names2.Count));
Assert.IsTrue(e.NewItems.Count == names1.Count);
};
ocr.AssumeRange(names1);
}
public void TestCaseAssumeGrouped()
{
var ocr = new ObservableCollectionRanged <IGrouping <int, string> >();
var groupedList1 = names1.GroupBy(s => s.Length);
ocr.AddRange(groupedList1);
var groupedList2 = names2.GroupBy(s => s.Length);
ocr.AddRange(groupedList2);
ocr.CollectionChanged += (sender, e) =>
{
Assert.IsTrue(e.Action == NotifyCollectionChangedAction.Replace);
Assert.IsNotNull(e.NewItems);
Assert.IsNotNull(e.OldItems);
Assert.IsTrue(e.OldItems.Count == (groupedList1.Count() + groupedList2.Count()));
Assert.IsTrue(e.NewItems.Count == groupedList1.Count());
};
ocr.AssumeRange(groupedList1);
}