public void op_GetEnumerator()
        {
            var obj = new MemoryCacheCollection();

            try
            {
                var key      = AlphaDecimal.Random();
                var expected = new object();
                obj[key] = expected;
                var actual = obj.First();

                Assert.Same(expected, actual);
            }
            finally
            {
                obj.Clear();
            }
        }