public void TestMethod1()
{
var manager = new CacheManager();
var envelop = new Envelope(325017, 320003, 7392018, 7391712);
IList<IGeometry> list = new List<IGeometry>();
var start = DateTime.Now;
manager.RetriveData(envelop, ref list);
var first = (DateTime.Now - start).TotalMilliseconds;
start = DateTime.Now;
manager.RetriveData(envelop, ref list);
var second = (DateTime.Now - start).TotalMilliseconds;
Assert.IsTrue(first > second);
}