svoid test_EnglishDateParser() {
  //long baseDate = parseYMDHMS_slashesSpaceColons("2019/02/05 18:23:15");
  //XXX - nasty infinite transpilation bug...
  //delegate Day to DateStructures.
  //delegate Month to DateStructures.
  //delegate Year to DateStructures.
  replace DS with DateStructures.
  
  EnglishDateParser parser = new EnglishDateParser(baseDate);
  parser.assumeFuture = true;
  testFunctionValues(s -> parser.parse(s),
    "2020/5/13" => new DS.Day(13, new DS.Month(5, new DS.Year(2020))),
    /*"tuesday" =>
    next tuesday
    in 5 days/5 days from now*/
  );
}