@Test
public void multipleOnlyInSource() {

    RangeComparator comparator = comparator(context(0L, 100L));
    RangeStats stats = comparator.compare(keys(4, 5, 6, 7, 8), keys(4, 5), this::alwaysMatch);
    assertFalse(stats.isEmpty());
    assertEquals(3, stats.getOnlyInSource());
    assertEquals(0, stats.getOnlyInTarget());
    assertEquals(2, stats.getMatchedPartitions());
    assertReported(6, MismatchType.ONLY_IN_SOURCE, mismatches);
    assertReported(7, MismatchType.ONLY_IN_SOURCE, mismatches);
    assertReported(8, MismatchType.ONLY_IN_SOURCE, mismatches);
    assertNothingReported(errors, journal);
    assertCompared(4, 5);
}