public void WhenPathChangesTest()
{
//监控文件
WhenPathChanges("~/c/a.txt", VirtualPathProvider.FileExists, s => VirtualPathProvider.CreateFile(s, stream => { }), VirtualPathProvider.DeleteFile,
s =>
{
var path = VirtualPathProvider.MapPath(s);
File.WriteAllText(path, "Test");
});
//监控目录
WhenPathChanges("~/c/a", VirtualPathProvider.DirectoryExists, VirtualPathProvider.CreateDirectory, VirtualPathProvider.DeleteDirectory, null);
if (VirtualPathProvider.DirectoryExists("~/c"))
{
VirtualPathProvider.DeleteDirectory("~/c");
}
}
private void WhenPathChanges(string path, Func <string, bool> exists, Action <string> create, Action <string> delete, Action <string> modify)
{
if (exists(path))
{
delete(path);
}
var token = VirtualPathMonitor.WhenPathChanges(path);
//验证方法。
Action <bool> val = b =>
{
if (b)
{
Assert.IsTrue(token.IsCurrent);
}
else
{
Assert.IsFalse(token.IsCurrent);
}
};
//第一次监控始终为true
val(true);
val(true);
//创建文件，文件状态变更（之前不存在）
create(path);
Thread.Sleep(1000);
//监控状态应为false
val(false);
/*//之后的状态都为true
* val(true);
* val(true);*/
if (modify != null)
{
//写入文件，文件状态变更（内容变更）
modify(VirtualPathProvider.MapPath(path));
Thread.Sleep(1000);
/*VirtualPathProvider.OpenFile(path, stream =>
* {
* using (var writer = new StreamWriter(stream))
* writer.Write("Test");
* });*/
//监控状态应为false
val(false);
/*//之后的状态都为true
* val(true);
* val(true);*/
}
//删除文件，文件状态变更（之前存在）
delete(path);
Thread.Sleep(1000);
//监控状态应为false
val(false);
/* //之后的状态都为true
* val(true);
* val(true);*/
}
