public void Test()
{
var originator = new Originator();
originator.SaveCheckpoint();
originator.IncreaseY();
originator.DecreaseX();
originator.SaveCheckpoint();
originator.UpdateX(2);
originator.SaveCheckpoint();
originator.UpdateX(3);
originator.IncreaseY();
Assert.AreEqual <int>(3, originator.Current.X);
Assert.AreEqual <int>(2, originator.Current.Y);
originator.Undo();
Assert.AreEqual <int>(2, originator.Current.X);
Assert.AreEqual <int>(1, originator.Current.Y);
originator.Undo();
Assert.AreEqual <int>(-1, originator.Current.X);
Assert.AreEqual <int>(1, originator.Current.Y);
}
public void Test1()
{
Originator ori = new Originator();
ori.SaveCheckpoint(); // x = 0, y = 0
ori.IncreaseY();
ori.DecreaseX();
ori.SaveCheckpoint(); // x = -1, y = 1
ori.UpdateX(2);
ori.SaveCheckpoint(); // x = 2, y = 1
ori.UpdateX(3);
ori.IncreaseY(); // x = 3, y = 1
Assert.AreEqual(3, ori.Current.X);
Assert.AreEqual(2, ori.Current.Y);
ori.Undo();
Assert.AreEqual(2, ori.Current.X);
Assert.AreEqual(1, ori.Current.Y);
ori.Undo();
Assert.AreEqual(-1, ori.Current.X);
Assert.AreEqual(1, ori.Current.Y);
}
public void Main()
{
var o1 = new Originator();
o1.IncreaseY();
o1.SaveCheckpoint(1);
o1.IncreaseY();
o1.SaveCheckpoint(2);
var o2 = new Originator();
o2.UpdateX(3);
o2.SaveCheckpoint(2);
o1.Undo(1);
Assert.AreEqual <int>(0, o1.Current.X);
Assert.AreEqual <int>(1, o1.Current.Y);
o2.Undo(2);
Assert.AreEqual <int>(3, o2.Current.X);
Assert.AreEqual <int>(0, o2.Current.Y);
}
public void Main()
{
// 定义两个独立的发起者实例，他们分别修改状态
var o1 = new Originator();
o1.IncreaseY(); // x = 0; y = 1;
o1.SaveCheckpoint(1);
o1.IncreaseY(); // x = 0; y = 2
o1.SaveCheckpoint(2);
var o2 = new Originator();
o2.UpdateX(3); // x = 3; y = 0
o2.SaveCheckpoint(2);
// 验证发起者类型可以借助外部持久机制保存多分
// 备案，而且不同实例可以独立使用持久机制
o1.Undo(1);
Assert.AreEqual <int>(0, o1.Current.X);
Assert.AreEqual <int>(1, o1.Current.Y);
o2.Undo(2);
Assert.AreEqual <int>(3, o2.Current.X);
Assert.AreEqual <int>(0, o2.Current.Y);
}
public void Test()
{
Originator originator = new Originator();
// 保存原发器刚初始化后的状态
originator.SaveCheckpoint(); // x = 0, y = 0
// 对原发器进行修改 1
originator.IncreaseY();
originator.DecreaseX();
originator.SaveCheckpoint(); // x = -1, y = 1
// 对原发器进行修改 2
originator.UpdateX(2);
originator.SaveCheckpoint(); // x = 2, y = 1
// 对原发器进行修改 3
originator.UpdateX(3);
originator.IncreaseY(); // x = 3, y = 2
// 确认Undo前的状态
Assert.AreEqual <int>(3, originator.Current.X);
Assert.AreEqual <int>(2, originator.Current.Y);
// 确认备忘录的栈式恢复作用——恢复到修改
originator.Undo();
Assert.AreEqual <int>(2, originator.Current.X);
Assert.AreEqual <int>(1, originator.Current.Y);
// 确认备忘录的栈式恢复作用——恢复到修改1
originator.Undo();
Assert.AreEqual <int>(-1, originator.Current.X);
Assert.AreEqual <int>(1, originator.Current.Y);
}
public void Test()
{
Originator originator = new Originator();
// 保存原发器刚初始化后的状态
originator.SaveCheckpoint();
// 对原发器进行操作，验证状态的修改
originator.IncreaseY();
originator.DecreaseX();
// 确认备忘录的恢复作用
originator.Undo();
Assert.AreEqual <int>(0, originator.Current.Y);
Assert.AreEqual <int>(0, originator.Current.X);
}
public void Test1()
{
Originator ori = new Originator();
Assert.AreEqual(0, ori.Current.Y);
Assert.AreEqual(0, ori.Current.X);
IMemento <Position> m1 = ori.Memento;
ori.IncreaseY();
ori.DecreaseX();
Assert.AreEqual(1, ori.Current.Y);
Assert.AreEqual(-1, ori.Current.X);
ori.Memento = m1;
Assert.AreEqual(0, ori.Current.Y);
Assert.AreEqual(0, ori.Current.X);
}
public void Test()
{
var originator = new Originator();
Assert.AreEqual <int>(0, originator.Current.Y);
Assert.AreEqual <int>(0, originator.Current.X);
// 保存发起者刚初始化的状态
var m1 = originator.Memento;
// 对发起者进行操作，验证状态的修改
originator.IncreaseY();
originator.DecreaseX();
Assert.AreEqual <int>(1, originator.Current.Y);
Assert.AreEqual <int>(-1, originator.Current.X);
// 确认备忘录的恢复作用
originator.Memento = m1;
Assert.AreEqual <int>(0, originator.Current.Y);
Assert.AreEqual <int>(0, originator.Current.X);
}
public void Test()
{
Originator originator = new Originator();
Assert.AreEqual <int>(0, originator.Current.Y);
Assert.AreEqual <int>(0, originator.Current.X);
// 保存原发器刚初始化后的状态
IMemento <Position> m1 = originator.Memento;
// 对原发器进行操作，验证状态的修改
originator.IncreaseY();
originator.DecreaseX();
Assert.AreEqual <int>(1, originator.Current.Y);
Assert.AreEqual <int>(-1, originator.Current.X);
// 确认备忘录的恢复作用
originator.Memento = m1;
Assert.AreEqual <int>(0, originator.Current.Y);
Assert.AreEqual <int>(0, originator.Current.X);
}
