}
        // but ok from repo: local disk is ignored
        testInheritance("tricky-flat-artifactId-urls", true);

        // parent references child with directory name (which is not artifact id)
        // then relative path calculation will success during build from disk but fail when calculated from repo
        testInheritance("tricky-flat-directory-urls", false);

        AssertionError afe = assertThrows(

      result = (byte) (result ^ checksum.getValue());
    }
    return result;
  }

  // Helpers + main

  private byte runHashFunction(int reps, HashFunction hashFunction) {
    byte result = 0x01;
    // Trick the JVM to prevent it from using the hash function non-polymorphically
    result ^= Hashing.crc32().hashInt(reps).asBytes()[0];
    result ^= Hashing.adler32().hashInt(reps).asBytes()[0];
    for (int i = 0; i < reps; i++) {

      sort(
          insertionOrder,
          new Comparator<V>() {
            @Override
            public int compare(V left, V right) {
              // The indexes are small enough for the subtraction trick to be safe.
              return indexOfEntryWithValue(left) - indexOfEntryWithValue(right);
            }

            int indexOfEntryWithValue(V value) {
              for (int i = 0; i < orderedEntries.size(); i++) {

    // to validate the properties. We also need a way to navigate from the Tex specification documents to
    // the test in question and vice versa. A little Eclipse plugin would do the trick.
    public void testThatExecutionsWithoutIdsAreMergedAndTheChildWins() throws Exception {
        PomTestWrapper tester = buildPom("micromailer");