svoid test_DateAttractor_ymd() {
  test_DateAttractor_ymd("let's met on 2020/5/3", "2020/5/3", "2020/05/03");
}

svoid test_DateAttractor_ymd(S input, S matched, S ymd) {
  DateAttractor_ymd a = cast getSingleton(pAttractor_allMatches2(new DateAttractor_ymd, javaTok(input)));
  assertEqualsVerbose(matched, a.matchedString());
  assertEqualsVerbose(ymd, a.ymd);
}