@Test
public void partitionPresentOnlyInTarget() {

    RangeComparator comparator = comparator(context(0L, 100L));
    RangeStats stats = comparator.compare(keys(7, 8), keys(7, 8, 9), this::alwaysMatch);
    assertFalse(stats.isEmpty());
    assertEquals(0, stats.getOnlyInSource());
    assertEquals(1, stats.getOnlyInTarget());
    assertEquals(2, stats.getMatchedPartitions());
    assertReported(9, MismatchType.ONLY_IN_TARGET, mismatches);
    assertNothingReported(errors, journal);
    assertCompared(7, 8);
}