public void TestRectangleTreeAllContents()
{
for (int i = 0; i < rectangles.Length; i++)
{
rt.Add(rectangles[i]);
}
List <Rectangle> contents = rt.GetContents();
Assert.AreEqual(7, contents.Count);
foreach (Rectangle rec in rectangles)
{
Assert.IsTrue(contents.Contains(rec));
}
}
