}

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

    @Test
    public void test_getPathMappingList_withNullSessionId() {
        assertNull(pathMappingHelper.getPathMappingList(null));
    }

    @Test
    public void test_replaceUrl_withNullSessionId() {
        final String url = "file:///home/user/";