@Test
public void csv() {

  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  table.write().csv(baos);
  String output = baos.toString();
  assertEquals(
      "v,v2" + LINE_END + "1.0,1.0" + LINE_END + "2.0,2.0" + LINE_END + "," + LINE_END + "",
      output);
}