### Question:
RackLogger { public void fatal(String message) { logger.error(FATAL, message); } RackLogger(Logger logger); void info(String message); void debug(String message); void warn(String message); void error(String message); void fatal(String message); static final Marker FATAL; }### Answer:
@Test public void fatal() { subject.fatal(MESSAGE); verify(delegate).error(FATAL, MESSAGE); }