}

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

    public void test_replaceUrl_withNullSessionId() {
        final String url = "file:///home/user/";
        assertEquals(url, pathMappingHelper.replaceUrl((String) null, url));
    }

    public void test_replaceUrl_withNonExistentSessionId() {