diff --git a/test/report_note_test.exs b/test/report_note_test.exs
new file mode 100644
index 000000000..25c1d6a61
--- /dev/null
+++ b/test/report_note_test.exs
@@ -0,0 +1,16 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.ReportNoteTest do
+  alias Pleroma.ReportNote
+  use Pleroma.DataCase
+  import Pleroma.Factory
+
+  test "create/3" do
+    user = insert(:user)
+    report = insert(:report_activity)
+    assert {:ok, note} = ReportNote.create(user.id, report.id, "naughty boy")
+    assert note.content == "naughty boy"
+  end
+end
diff --git a/test/support/factory.ex b/test/support/factory.ex
index 635d83650..486eda8da 100644
--- a/test/support/factory.ex
+++ b/test/support/factory.ex
@@ -297,6 +297,30 @@ def follow_activity_factory do
     }
   end
 
+  def report_activity_factory(attrs \\ %{}) do
+    user = attrs[:user] || insert(:user)
+    activity = attrs[:activity] || insert(:note_activity)
+    state = attrs[:state] || "open"
+
+    data = %{
+      "id" => Pleroma.Web.ActivityPub.Utils.generate_activity_id(),
+      "actor" => user.ap_id,
+      "type" => "Flag",
+      "object" => [activity.actor, activity.data["id"]],
+      "published" => DateTime.utc_now() |> DateTime.to_iso8601(),
+      "to" => [],
+      "cc" => [activity.actor],
+      "context" => activity.data["context"],
+      "state" => state
+    }
+
+    %Pleroma.Activity{
+      data: data,
+      actor: data["actor"],
+      recipients: data["to"] ++ data["cc"]
+    }
+  end
+
   def oauth_app_factory do
     %Pleroma.Web.OAuth.App{
       client_name: sequence(:client_name, &"Some client #{&1}"),