svoid test_AutoClassifier1() {
  int n = 2; // number of examples to learn for pos/neg - 2 actually work
  AutoClassifier1<S> c = new(S);
  c.noQ = true;
  c.start();
  pnl("feature", assertNempty("features", c.getAllFeatures("hello")));
  assertEmpty(c.confidentlyPredictedLabelsForObject("hello"));
  c.learn(takeFirst(n, ll("hello", "abcde", "xxxxx")), "5 chars");
  c.learn(takeFirst(n, ll("bla", "abcd", "aa")), "not 5 chars");
  //c.checkAllTheories();
  assertEqualsICVerbose("5 chars", joinWithComma(c.confidentlyPredictedLabelsForObject("world")));
  assertEqualsICVerbose("not 5 chars", joinWithComma(c.confidentlyPredictedLabelsForObject("......")));
}