public void RemoveRangeItemTest()
{
RangeCollection <MyRangeItem> collection = new RangeCollection <MyRangeItem>();
collection.Add(new MyRangeItem(1, 10));
collection.Add(new MyRangeItem(20, 10));
collection.RemoveNearest(0, 15);
var result = collection.ToList();
Assert.IsTrue(result[0].start == 20 && result[0].length == 10);
collection.Remove(20, 1);
Assert.IsTrue(collection.Count == 0);
}