assertEquals(0, queryFieldConfig.sortFieldSet.size());

        // Should return false for any field, not throw exception
        assertFalse(queryFieldConfig.isSortField("anyfield"));
        assertFalse(queryFieldConfig.isSortField("score"));
        assertFalse(queryFieldConfig.isSortField(""));
    }

    /**

        assertFalse(queryFieldConfig.isSortField("anyfield"));
        assertFalse(queryFieldConfig.isSortField(""));
        assertFalse(queryFieldConfig.isSortField(null));
    }

    @Test
    public void test_isFacetField_withEmptyArray() {
        queryFieldConfig.setFacetFields(new String[] {});

        assertFalse(queryFieldConfig.isFacetField("anyfield"));
        assertFalse(queryFieldConfig.isFacetField(""));

        queryFieldConfig.setSearchFields(new String[] {});

        assertFalse(queryCommand.isSearchField("title"));
        assertFalse(queryCommand.isSearchField("content"));
        assertFalse(queryCommand.isSearchField("anyfield"));
    }

    /**
     * Test isSearchField() performance with large field set.
     */
    @Test
    public void test_isSearchField_performance() {
        // Create a large set of search fields

        // No system properties set - should pass without checking

        final File anyFile = new File(tempDir.toFile(), "any/test.txt");
        anyFile.getParentFile().mkdirs();
        anyFile.createNewFile();

        // Should not throw when no allowed paths are configured
        action.validateFilePath(anyFile.getAbsolutePath());
    }