@Test
public void testFieldLevelStats_noMatch() throws Exception {

    String result = "a I-<1> I-<2>\nb <1> <2>\nc <1> I-<2>\nd <1> <2>\ne <1> <2>\n";
    Stats fieldStats = target.fieldLevelStats(result);
    LabelStat labelstat1 = fieldStats.getLabelStat("<1>");
    LabelStat labelstat2 = fieldStats.getLabelStat("<2>");
    assertThat(labelstat1.getObserved(), CoreMatchers.is(0));
    assertThat(labelstat1.getExpected(), CoreMatchers.is(1));
    assertThat(labelstat1.getSupport(), CoreMatchers.is(1L));
    assertThat(labelstat2.getObserved(), CoreMatchers.is(0));
    assertThat(labelstat2.getExpected(), CoreMatchers.is(0));
    assertThat(labelstat2.getSupport(), CoreMatchers.is(0L));
}