  @Test
  public void testRecordLength() throws Exception {

    Row row = new Row("a", 1).add("b", 2).add("c", 3);
    Assert.assertEquals(3, DataQuality.columns(row));
    row = new Row("a", 1);
    Assert.assertEquals(1, DataQuality.columns(row));
    row = new Row();
    Assert.assertEquals(0, DataQuality.columns(row));
  }