public void IndexOf()
        {
            for (int i = 0; i < _size; i++)
            {
                Assert.AreEqual(i, ReadOnlyTestee.IndexOf(MakeTestItem(i)));
            }

            Assert.AreEqual(-1, ReadOnlyTestee.IndexOf(TheTestItem1));
        }
 public void InsertIsNotSupported()
 {
     ReadOnlyTestee.Insert(0, TheTestItem1);
 }
 public void RemoveAtIsNotSupported()
 {
     ReadOnlyTestee.RemoveAt(0);
 }