pathMappingHelper.setPathMappingList(sessionId, null);
        assertNull(pathMappingHelper.getPathMappingList(sessionId));
    }

    @Test
    public void test_removePathMappingList_withNullSessionId() {
        pathMappingHelper.removePathMappingList(null);
    }

    @Test
    public void test_getPathMappingList_withNullSessionId() {