Restore "renamed" flag on file rename event (#68)

* Restore "renamed" flag on file rename event

* More granular events for file moves

See discussion [here](https://github.com/falood/file_system/issues/67

)

Co-authored-by: Luca Dei Zotti <luca.deizotti@athonet.com>

lib/file_system/backends/fs_inotify.ex

@@ -157,9 +157,9 @@ defmodule FileSystem.Backends.FSInotify do
   end
 
   defp convert_flag("CREATE"),      do: :created
-  defp convert_flag("MOVED_TO"),    do: :created
+  defp convert_flag("MOVED_TO"),    do: :moved_to
   defp convert_flag("DELETE"),      do: :deleted
-  defp convert_flag("MOVED_FROM"),  do: :deleted
+  defp convert_flag("MOVED_FROM"),  do: :moved_from
   defp convert_flag("ISDIR"),       do: :isdir
   defp convert_flag("MODIFY"),      do: :modified
   defp convert_flag("CLOSE_WRITE"), do: :modified

test/backends/fs_inotify_test.exs

@@ -42,10 +42,15 @@ defmodule FileSystem.Backends.FSInotifyTest do
     end
 
     test "dir moved to" do
-      assert {"/one/two/file", [:created]} ==
+      assert {"/one/two/file", [:moved_to]} ==
         ~w|/one/two/ MOVED_TO file| |> to_port_line |> parse_line
     end
 
+    test "dir moved from" do
+      assert {"/one/two/file", [:moved_from]} ==
+        ~w|/one/two/ MOVED_FROM file| |> to_port_line |> parse_line
+    end
+
     test "dir is_dir create" do
       assert {"/one/two/dir", [:created, :isdir]} ==
         ~w|/one/two/ CREATE,ISDIR dir| |> to_port_line |> parse_line