public void FolderVisitor_SetEditVisitorAndExecuteTwice_IsModifiedInverted()
{
var file = new Folder("test");
var visitor = new EditVisitor();
file.Accept(visitor);
Assert.True(visitor.IsModified);
file.Accept(visitor);
Assert.False(visitor.IsModified);
}
/// <summary>
/// 访问者
/// </summary>
static void Visitor()
{
Console.WriteLine($"访问者模式{Environment.NewLine}-------------------------------------------");
//创建目录结构 Start
IFile folderA = new Folder("FolderA");
folderA.Add(new Txt("TxtA"));
folderA.Add(new Png("PngA"));
IFile folderB = new Folder("FolderB");
folderB.Add(new Txt("TxtB"));
folderB.Add(new Png("PngB"));
IFile folderC = new Folder("FolderC");
folderC.Add(new Txt("TxtC"));
folderC.Add(new Png("PngC"));
folderB.Add(folderC);
IFile folder = new Folder("Folder");
folder.Add(folderA);
folder.Add(folderB);
//创建目录结构 End
FolderSumVisitor folderSumVisitor = new FolderSumVisitor();
folder.Accept(folderSumVisitor);
Console.WriteLine($"共有文件夹{folderSumVisitor.Sum}个");
PngSumVisitor pngSumVisitor = new PngSumVisitor();
folder.Accept(pngSumVisitor);
Console.WriteLine($"共有png文件{pngSumVisitor.Sum}个");
TxtNameVisitor txtNameVisitor = new TxtNameVisitor();
folder.Accept(txtNameVisitor);
Console.WriteLine($"{Environment.NewLine}所有的txt文件名如下：");
txtNameVisitor.NameList.ForEach(t => Console.WriteLine(t));
Console.ReadKey();
}
