assertFalse(queryFieldConfig.isFacetField("category"));
    }

    /**
     * Test that init() creates Sets when arrays are initialized.
     */
    @Test
    public void test_init_createsSets() {
        queryFieldConfig.init();

        // All Sets should be created during init
        assertNotNull(queryFieldConfig.searchFieldSet);
        assertNotNull(queryFieldConfig.facetFieldSet);