public void IsRootedTest()
 {
     Assert.IsTrue(FileSystemPath.IsRooted("/filea"));
     Assert.IsTrue(FileSystemPath.IsRooted("/directorya/"));
     Assert.IsFalse(FileSystemPath.IsRooted("filea"));
     Assert.IsFalse(FileSystemPath.IsRooted("directorya/"));
     Assert.IsTrue(_paths.All(p => FileSystemPath.IsRooted(p.ToString())));
 }