assertNotNull(result);
        assertTrue(result.contains("title=null"));
        assertTrue(result.contains("key1=query1"));
    }

    @Test
    public void test_toString_withEmptyQueryMap() {
        facetQueryView.setTitle("Empty Map Test");

        String result = facetQueryView.toString();
        assertNotNull(result);
        assertTrue(result.contains("title=Empty Map Test"));