public void ListViewGroupCollection_RemoveAt_ValidIndex_Success()
{
using var listView = new ListView();
ListViewGroupCollection collection = listView.Groups;
var group = new ListViewGroup();
collection.Add(group);
collection.Add(new ListViewGroup());
collection.Add(new ListViewGroup());
collection.Add(new ListViewGroup());
// Remove from start.
collection.RemoveAt(0);
Assert.Equal(3, collection.Count);
// Remove from middle.
collection.RemoveAt(1);
Assert.Equal(2, collection.Count);
// Remove from end.
collection.RemoveAt(1);
Assert.Single(collection);
// Remove only.
collection.RemoveAt(0);
Assert.Empty(collection);
Assert.Null(group.ListView);
}
public void ListViewGroupCollection_RemoveAt_InvalidIndex_ThrowsArgumentOutOfRangeException(int index)
{
using var listView = new ListView();
ListViewGroupCollection collection = listView.Groups;
Assert.Throws <ArgumentOutOfRangeException>("index", () => collection.RemoveAt(index));
}
public void RemoveAtTest()
{
ListViewGroup obj = new ListViewGroup("Item1");
ListViewGroup obj2 = new ListViewGroup("Item2");
grpCol.Add(obj);
grpCol.Add(obj2);
grpCol.RemoveAt(0);
Assert.AreEqual(1, grpCol.Count, "#G1");
Assert.AreEqual(true, grpCol.Contains(obj2), "#G2");
Assert.AreEqual(null, obj.ListView, "#G3");
Assert.AreEqual(lv, obj2.ListView, "#G4");
}