svoid test_LCSingleSearcher_v1_systematically(int max, O... _) {
  optPar bool verbose;
  optPar bool checkOverlongQueries = true;
  
  for (int n = 0; n <= max; n++) {
    print("Testing length " + n);
    int tests = 0;
    for (S text : allABCCombinationsOfLength(n)) {
      //print(+text);
      for (int j = 1; j <= n+(checkOverlongQueries ? 1 : 0); j++)
        for (S query : allABCCombinationsOfLength(j)) {
          ++tests;
          Pair<L<Int>, S> output = hijackPrintWithResult(() -> {
            new LCSingleSearcher_v1 searcher;
            searcher.text = text;
            ret searcher.search(query);
          });
          L<Int> correct = indicesOf(text, query);
          L<Int> out = sorted(output.a);
          if (eq(correct, out)) {
            if (verbose) print("OK " + query + " in " + text + ": " + out);
          } else {
            print(output);
            fail(query + " in " + text + ": " + out + " / " + correct);
          }
        }
    }
    print(nTests(tests) + " done");
  }
}

Began life as a copy of #1029101