MockDirectory.Delete(string path, bool recursive) deletes all directories that starts with the same path.

[andjor]

It seems that there is a bug in MockDirectory.Delete. The method deletes all directories that starts with the same path. I have included a small linqpad script to reproduce this.

var folder1Path = @"D:\Test\Program";
var folder2Path = @"D:\Test\Program_bak";
var folder3Path = @"D:\Test\Program_old";

var fileSystem = new MockFileSystem();

fileSystem.AddDirectory(folder1Path);
fileSystem.AddDirectory(folder2Path);
fileSystem.AddDirectory(folder3Path);

fileSystem.AllDirectories.Dump("Before");
fileSystem.Directory.Delete(folder1Path, recursive: true);
fileSystem.AllDirectories.Dump("After");

This results in all three folders being deleted. Tested with version 3.0.2.

[fgreinacher]

Thanks for reporting!

[fgreinacher]

Fixed in https://www.nuget.org/packages/System.IO.Abstractions/3.0.10