         assert File.exists?(tmp_path("tmp/a/a/2.txt"))
         assert File.exists?(tmp_path("tmp/b/3.txt"))
       after
-        System.cmd "rm -rf #{dest}"
+        File.rm_rf dest
       end
     end
 

        assert File.cp_r(src, dest) == { :ok, [final] }
        assert File.exists?(final)
      after
        System.cmd "rm -rf #{dest}"
      end
    end


        assert File.mkdir(fixture) == :ok
        assert File.exists?(fixture)
      after
        File.rmdir fixture
      end
    end

