Participations: Filter out participations without activities.

1 files changed, 13 insertions, 0 deletions

diff --git a/test/conversation/participation_test.exs b/test/conversation/participation_test.exs
index 568953b07..0e60bfca5 100644
--- a/test/conversation/participation_test.exs
+++ b/test/conversation/participation_test.exs
@@ -86,4 +86,17 @@ defmodule Pleroma.Conversation.ParticipationTest do
 
     assert participation_one.last_activity_id == activity_three.id
   end
+
+  test "Doesn't die when the conversation gets empty" do
+    user = insert(:user)
+
+    {:ok, activity} = CommonAPI.post(user, %{"status" => ".", "visibility" => "direct"})
+    [participation] = Participation.for_user_with_last_activity_id(user)
+
+    assert participation.last_activity_id == activity.id
+
+    {:ok, _} = CommonAPI.delete(activity.id, user)
+
+    [] = Participation.for_user_with_last_activity_id(user)
+  end
 end