### Question:
QueryFunctions { public static double ceil(String str) { return Math.ceil(Double.valueOf(str)); } private  QueryFunctions(); static int dayOfMonth(String str); static int dayOfWeek(String str); static int dayOfYear(String str); static double ceil(String str); static double floor(String str); static int hour(String str); static boolean like(String str, String likeExpression); static int millisecond(String str); static int minute(String str); static int month(String str); static int second(String str); static String space(int amount); static double sqrt(String str); static int week(String str); static int year(String str); static int yearMonth(String str);  }### Answer:
@Test public void Ceil() { assertEquals(1.0, QueryFunctions.ceil("0.5"), 0.01); }