Add basic incoming deletions.

test/web/ostatus/incoming_documents/delete_handling_test.exs

@@ -0,0 +1,23 @@
+defmodule Pleroma.Web.OStatus.DeleteHandlingTest do
+  use Pleroma.DataCase
+
+  import Pleroma.Factory
+  alias Pleroma.{Repo, Activity, Object}
+  alias Pleroma.Web.OStatus
+
+  describe "deletions" do
+    test "it removes the mentioned activity" do
+      note = insert(:note_activity)
+      second_note = insert(:note_activity)
+
+      incoming = File.read!("test/fixtures/delete.xml")
+      |> String.replace("tag:mastodon.sdf.org,2017-06-10:objectId=310513:objectType=Status", note.data["object"]["id"])
+      {:ok, []} = OStatus.handle_incoming(incoming)
+
+      refute Repo.get(Activity, note.id)
+      refute Object.get_by_ap_id(note.data["object"]["id"])
+      assert Repo.get(Activity, second_note.id)
+      assert Object.get_by_ap_id(second_note.data["object"]["id"])
+    end
+  end
+end