public void exportPng_params() throws UnknownViewTypeException, IOException {
    View view = new TableViewImpl(service, builder.buildViewNode(id, name, "chart"));

    ViewExporter exporter = view.createExporter();
    assertEquals(exporter.getId(), id);

    ViewExport result = exporter.exportPng(123, 456);
    server.assertRequestUris(URI_PNG);

    assertEquals(result.getViewId(), id);
    assertEquals(result.getExportType(), ViewExportType.PNG);

    BufferedImage image = ImageIO.read(result.getInputStream());
    assertEquals(image.getWidth(), 56);
    assertEquals(image.getHeight(), 46);
  }