Add an endpoint to get multiple statuses by IDs

test/activity_test.exs

@@ -173,4 +173,12 @@ defmodule Pleroma.ActivityTest do
     |> where([a], a.activity_id == ^activity.id)
     |> Repo.one!()
   end
+
+  test "all_by_ids_with_object/1" do
+    %{id: id1} = insert(:note_activity)
+    %{id: id2} = insert(:note_activity)
+
+    assert [%{id: ^id1, object: %Object{}}, %{id: ^id2, object: %Object{}}] =
+             Activity.all_by_ids_with_object([id1, id2])
+  end
 end

test/web/mastodon_api/mastodon_api_controller_test.exs

@@ -744,6 +744,16 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIControllerTest do
     assert id == to_string(activity.id)
   end
 
+  test "get statuses by IDs", %{conn: conn} do
+    %{id: id1} = insert(:note_activity)
+    %{id: id2} = insert(:note_activity)
+
+    query_string = "ids[]=#{id1}&ids[]=#{id2}"
+    conn = get(conn, "/api/v1/statuses/?#{query_string}")
+
+    assert [%{"id" => ^id1}, %{"id" => ^id2}] = json_response(conn, :ok)
+  end
+
   describe "deleting a status" do
     test "when you created it", %{conn: conn} do
       activity = insert(:note_activity)