@Test
public void enhanceLogWithCorrelationId() {

    final String correlationId = "theCorrelationId";
    final Map<String, Object> expectedMap = new HashMap<>(DEFAULT_MDC);
    expectedMap.put(LogUtil.X_CORRELATION_ID, correlationId);
    LogUtil.enhanceLogWithCorrelationId(log, correlationId);
    Mockito.verify(log).setMDC(expectedMap);
}