System.clearProperty("123");
        System.clearProperty("test_var");
    }

    @Test
    public void test_resolve_edgeCases() {
        // Test empty property replacement
        System.setProperty("empty", "");
        String value = "${empty}";
        assertEquals("", ResourceUtil.resolve(value));

        // Test property with just spaces
        System.setProperty("spaces", "   ");

        EntraIdAuthenticator authenticator = new EntraIdAuthenticator();
        authenticator.setMaxGroupDepth(2);

        // Test that depth limit returns empty arrays when depth is exceeded
        // With depth limit set to 2, depth 10 should return empty arrays
        Pair<String[], String[]> result = authenticator.getParentGroup(null, "test-id", 10);
        assertNotNull(result);
        assertEquals(0, result.getFirst().length);

            }
        }

        // An empty file should return no items
        assertEquals("Empty file should have no items", 0, result.size());
        assertEquals("Empty file should have no records", 0, result.getAllRecordCount());
        assertEquals("Empty file should have no pages", 0, result.getAllPageCount());
    }

    // Test selectList method with valid data

        public Map<String, Object> toSource() {
            return null;
        }

        @Override
        public String getEventType() {
            return null;
        }
    }

    // Test empty values implementation
    private static class EmptySearchLogEvent implements SearchLogEvent {
        @Override
        public String getId() {
            return "";
        }

        @Override

    }

    @Test
    public void test_empty() {
        // Test empty user bean creation
        FessUserBean emptyBean = FessUserBean.empty();
        assertNotNull(emptyBean);

        // Test getUserId returns EMPTY_USER_ID
        assertEquals(Constants.EMPTY_USER_ID, emptyBean.getUserId());

        // Test hasRoles always returns true for empty user
        assertTrue(emptyBean.hasRoles(new String[] { "admin" }));

     * @param dataCrawlStartTime The parameter value of dataCrawlStartTime. (NotNull)
     */
    public void setDataCrawlStartTime(String dataCrawlStartTime) {
        registerVariable("dataCrawlStartTime", dataCrawlStartTime);
    }

    /**
     * Set the value of dataCrawlEndTime, used in parameter comment. <br>

        // Assert deleteByQuery was called with the configured empty index
        assertTrue(deleteByQueryCalled);
        assertEquals("", deleteIndex);

        // Assert result is empty when successful
        assertEquals("", result);
    }

    @Test
    public void test_execute_withEmptyFieldName() {
        // Configure empty field name
        expiresFieldName = "";

            processor.init();

            // Should handle empty searcher list gracefully
            final List<Map<String, Object>> results = processor.search("*", new TestSearchRequestParams(0, 10, 0), OptionalThing.empty());
            assertNotNull(results);
        }
    }

    /**
     * Test setSearcher when list is initially empty.
     */
    @Test

    }

    /**
     * Test isSortField with empty array - should return false, not throw exception.
     * This test addresses the Copilot AI concern about empty arrays.
     */
    @Test
    public void test_isSortField_withEmptyArray_returnsFalse() {
        String[] emptyFields = {};
        queryFieldConfig.setSortFields(emptyFields);

        // Set should be empty but not null

        }
    }

    @Test
    public void test_setObject_withEmptyName() {
        // Test setObject with empty name
        try {
            WebApiUtil.setObject("", "testValue");
        } catch (Exception e) {
            fail("setObject should handle empty name gracefully: " + e.getMessage());
        }
    }

    @Test
    public void test_getObject_noRequest() {