### Question:
RomanNumeral { public int toInt() { return num; } RomanNumeral(int arabic);  RomanNumeral(String roman); String toString(); int toInt(); static String integerToRomanNumeral( Integer i );  }### Answer:
@Test public void testToInt() { System.out.println("toInt"); RomanNumeral instance = new RomanNumeral("CXXIII"); int expResult = 123; int result = instance.toInt(); assertEquals(expResult, result); }