label_test.exs

  test "updates a label", %{
    label: label,
    label_name: label_name,
    access_token_rec: access_token_rec,
    expected_result: expected_result,
    bypass: bypass,
    label_id: label_id
  } do
    Bypass.expect bypass, fn conn ->
      {:ok, body, _} = Plug.Conn.read_body(conn)
      {:ok, body_params} = body |> Poison.decode
      assert body_params == %{
        "id" => label_id,
        "name" => label_name,
        "labelListVisibility" => "labelShow",
        "messageListVisibility" => "show"
      }
      assert "/gmail/v1/users/me/labels/#{label_id}" == conn.request_path
      assert "" == conn.query_string
      assert "PUT" == conn.method
      {:ok, json} = Poison.encode(label)
      Plug.Conn.resp(conn, 200, json)
    end
    with_mock Gmail.OAuth2, [get_config: fn -> access_token_rec end] do
      {:ok, label} = Gmail.Label.update(expected_result)
      assert expected_result == label
      assert called Gmail.OAuth2.get_config
    end
  end