FileSystemWatcher doesn't trigger Deleted event for file when watched directory is deleted on OSX #44484
Description
Description
Create a FileSystemWatcher that watches a directory.
Create a file in that directory and observe Created event.
Delete the file and observe Deleted event.
Create another file in that directory and observe Created event.
Delete the directory, and no deleted event ever arrives.
Configuration
- Which version of .NET is the code running on? .NET 5.0
- What OS and version, and what distro if applicable? OSX 10.13.6
- What is the architecture (x64, x86, ARM, ARM64)? x64
- Do you know whether it is specific to that configuration? It appears to be specific to OSX
Regression?
Not a regression, but different than other platforms
Other information
May be similar to #30415
Discovered when working on #41426
Repro:
using System;
using System.IO;
using System.Threading.Tasks;
namespace fileWatch
{
class Program
{
static async Task Main(string[] args)
{
int waitTime = 1000;
var rootPath = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
var subDir = Path.Combine(rootPath, "sub");
Directory.CreateDirectory(rootPath);
Directory.CreateDirectory(subDir);
using (var fsw = new FileSystemWatcher(rootPath, "*"))
{
fsw.Created += (o, e) => Console.WriteLine($"Created {e.FullPath}");
fsw.Deleted += (o, e) => Console.WriteLine($"Deleted {e.FullPath}");
fsw.IncludeSubdirectories = true;
fsw.EnableRaisingEvents = true;
var fileLocation = Path.Combine(subDir, Path.GetRandomFileName());
File.WriteAllText(fileLocation, "temp");
await Task.Delay(waitTime);
File.Delete(fileLocation);
await Task.Delay(waitTime);
fileLocation = Path.Combine(subDir, Path.GetRandomFileName());
File.WriteAllText(fileLocation, "temp");
await Task.Delay(waitTime);
Directory.Delete(subDir, true);
await Task.Delay(waitTime);
fileLocation = Path.Combine(rootPath, Path.GetRandomFileName());
File.WriteAllText(fileLocation, "temp");
await Task.Delay(waitTime);
File.Delete(fileLocation);
await Task.Delay(waitTime);
fileLocation = Path.Combine(rootPath, Path.GetRandomFileName());
File.WriteAllText(fileLocation, "temp");
await Task.Delay(waitTime);
Directory.Delete(rootPath, true);
await Task.Delay(waitTime);
Console.WriteLine(File.Exists(fileLocation));
}
}
}
}