@Test
    public void testMDCContextMapValues() {
        Map<String, String> map = new HashMap<>();
        map.put("ka", "va");
        map.put("kb", "vb");

        MDC.put("k", "v");
        assertEquals("v", MDC.get("k"));
        MDC.setContextMap(map);
        assertNull(MDC.get("k"));
        assertEquals("va", MDC.get("ka"));
        assertEquals("vb", MDC.get("kb"));
    }
Test whether invoking the SLF4J API causes problems or not.

@author Ceki Gulcu
slf4j-reload4j/src/test/java/org/slf4j/reload4j/InvocationTest.java