Test the note is returned when fetching a single report

test/pleroma/web/admin_api/controllers/report_controller_test.exs

@@ -37,12 +37,21 @@ test "returns report by its id", %{conn: conn} do
           status_ids: [activity.id]
         })
 
+      conn
+      |> put_req_header("content-type", "application/json")
+      |> post("/api/pleroma/admin/reports/#{report_id}/notes", %{
+        content: "this is an admin note"
+      })
+
       response =
         conn
         |> get("/api/pleroma/admin/reports/#{report_id}")
         |> json_response_and_validate_schema(:ok)
 
       assert response["id"] == report_id
+
+      [notes] = response["notes"]
+      assert notes["content"] == "this is an admin note"
     end
 
     test "returns 404 when report id is invalid", %{conn: conn} do