assertTrue(queryFieldConfig.searchFieldSet.contains("field3"));
    }

    /**
     * Test that setting facet fields creates both array and Set.
     */
    @Test
    public void test_setFacetFields_createsSet() {
        String[] fields = { "facet1", "facet2", "facet3" };
        queryFieldConfig.setFacetFields(fields);

        // Verify array is set
        assertNotNull(queryFieldConfig.facetFields);