C# (CSharp) System.Collections.Generic System.Collections.Generic.List.GetLoopedTwoWayEnumerator示例

示例#1

文件： LoopedTwoWayEnumeratorTest.cs 项目： papagenoo/BabylonMono

 public void TestCase()
 {
     IList<string> list = new System.Collections.Generic.List<string> {
         "First", "Second", "Third"
     };
     var enumerator = list.GetLoopedTwoWayEnumerator ();
     Assert.AreEqual (null, enumerator.Current);
     Assert.IsTrue (enumerator.MoveNext ());
     Assert.AreEqual ("First", enumerator.Current);
     Assert.IsTrue (enumerator.MoveNext ());
     Assert.AreEqual ("Second", enumerator.Current);
     Assert.IsTrue (enumerator.MoveNext ());
     Assert.AreEqual ("Third", enumerator.Current);
     Assert.IsTrue (enumerator.MoveNext ());
     Assert.AreEqual ("First", enumerator.Current);
     Assert.IsTrue (enumerator.MoveNext ());
     Assert.AreEqual ("Second", enumerator.Current);
     // обратный ход
     Assert.IsTrue (enumerator.MovePrevious ());
     Assert.AreEqual ("First", enumerator.Current);
     Assert.IsTrue (enumerator.MovePrevious ());
     Assert.AreEqual ("Third", enumerator.Current);
     Assert.IsTrue (enumerator.MovePrevious ());
     Assert.AreEqual ("Second", enumerator.Current);
     Assert.IsTrue (enumerator.MovePrevious ());
     Assert.AreEqual ("First", enumerator.Current);
     Assert.IsTrue (enumerator.MovePrevious ());
     Assert.AreEqual ("Third", enumerator.Current);
     Assert.IsTrue (enumerator.MoveNext ());
     Assert.AreEqual ("First", enumerator.Current);
 }