### Question:
CharacterReader { boolean containsIgnoreCase(String seq) { String loScan = seq.toLowerCase(Locale.ENGLISH); String hiScan = seq.toUpperCase(Locale.ENGLISH); return (nextIndexOf(loScan) > -1) || (nextIndexOf(hiScan) > -1); } CharacterReader(Reader input, int sz);  CharacterReader(Reader input);  CharacterReader(String input); int pos(); boolean isEmpty(); char current(); void advance(); String consumeTo(char c); String consumeToAny(final char... chars); @Override String toString();  }### Answer:
@Test public void containsIgnoreCase() { CharacterReader r = new CharacterReader("One TWO three"); assertTrue(r.containsIgnoreCase("two")); assertTrue(r.containsIgnoreCase("three")); assertFalse(r.containsIgnoreCase("one")); }