@Test
  public void shouldConfigureNullValue() {
    UniVocityFixedWidthDataFormat dataFormat =
        new UniVocityFixedWidthDataFormat()
            .setFieldLengths(new int[] {1, 2, 3})
            .setNullValue("N/A");

    assertEquals("N/A", dataFormat.getNullValue());
    assertEquals("N/A", dataFormat.createAndConfigureWriterSettings().getNullValue());
    assertEquals("N/A", dataFormat.createAndConfigureParserSettings().getNullValue());
  }