                    "token" => "[FILTERED]"
                  }
       end)
-
-      Application.delete_env(:phoenix, :filter_parameters)
     end
 
     test "uses filter parameters from the OS environment" do


        assert MapFilter.get_filter_parameters() == ["token", "password"]
      end)

      Application.delete_env(:phoenix, :filter_parameters)
    end
  end


      Application.put_env(:phoenix, :filter_parameters, ~w(password))
      Config.initialize()
      assert MapFilter.get_filter_parameters() == ["password"]
    end

    test "merges AppSignal's parameter filters with Phoenix' parameter filters" do
