public void Clearできる()
{
linkedList = new ShosLinkedList1 <int> {
10, 70, 30
};
linkedList.Clear();
Assert.AreEqual(0, linkedList.Count);
Assert.IsNull(linkedList.First);
Assert.IsNull(linkedList.Last);
linkedList.AddLast(40);
linkedList.AddLast(20);
AssertExtensions.AreEqual(new[] { 40, 20 }, linkedList);
}