@Test
public void testFieldLevelStats2_mixed() throws Exception {

    // variant of testMetricsMixed1 where the I- prefix impact the field-level results
    // with field ab correctly found
    String result = "a I-<1> I-<1>\nb <1> <1>\nc I-<2> I-<1>\nd I-<1> <1>\ne <1> <1>\n";
    Stats fieldStats = target.fieldLevelStats(result);
    LabelStat labelstat1 = fieldStats.getLabelStat("<1>");
    LabelStat labelstat2 = fieldStats.getLabelStat("<2>");
    assertThat(labelstat1.getObserved(), CoreMatchers.is(1));
    assertThat(labelstat1.getExpected(), CoreMatchers.is(2));
    assertThat(labelstat2.getObserved(), CoreMatchers.is(0));
    assertThat(labelstat2.getExpected(), CoreMatchers.is(1));
}