Chat Controller: Add basic error handling.

lib/pleroma/web/pleroma_api/controllers/chat_controller.ex

@@ -18,8 +18,7 @@ defmodule Pleroma.Web.PleromaAPI.ChatController do
   import Ecto.Query
   import Pleroma.Web.ActivityPub.ObjectValidator, only: [stringify_keys: 1]
 
-  # TODO
+  action_fallback(Pleroma.Web.MastodonAPI.FallbackController)
-  # - Error handling
 
   plug(
     OAuthScopesPlug,
@@ -53,6 +52,8 @@ def delete_message(%{assigns: %{user: %{ap_id: actor} = user}} = conn, %{
       conn
       |> put_view(ChatMessageView)
       |> render("show.json", for: user, object: message, chat: chat)
+    else
+      _e -> {:error, :could_not_delete}
     end
   end
 

test/web/pleroma_api/controllers/chat_controller_test.exs

@@ -88,6 +88,8 @@ test "it deletes a message for the author of the message", %{conn: conn, user: u
       {:ok, message} =
         CommonAPI.post_chat_message(user, recipient, "Hello darkness my old friend")
 
+      {:ok, other_message} = CommonAPI.post_chat_message(recipient, user, "nico nico ni")
+
       object = Object.normalize(message, false)
 
       chat = Chat.get(user.id, recipient.ap_id)
@@ -99,6 +101,16 @@ test "it deletes a message for the author of the message", %{conn: conn, user: u
         |> json_response_and_validate_schema(200)
 
       assert result["id"] == to_string(object.id)
+
+      object = Object.normalize(other_message, false)
+
+      result =
+        conn
+        |> put_req_header("content-type", "application/json")
+        |> delete("/api/v1/pleroma/chats/#{chat.id}/messages/#{object.id}")
+        |> json_response(400)
+
+      assert result == %{"error" => "could_not_delete"}
     end
   end