fail("setObject should handle missing request gracefully: " + e.getMessage());
        }
    }

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

                }
            }
        };

        FwAssistantDirector assistantDirector = createMockAssistantDirector();

        // Should handle ClassNotFoundException gracefully
        customHook.hook(assistantDirector);

        // Verify no exception is thrown to the caller
        assertTrue(true);
    }

    // Test shutdownCommonsHttpClient private method with reflection

        Map<String, Object> docMap = new HashMap<>();

        // Note: isTarget requires FessConfig which needs container
        // We can only verify the method handles missing container gracefully
        try {
            generator.isTarget(docMap);
        } catch (IllegalStateException e) {
            // Expected when container is not initialized
            assertTrue(e.getMessage().contains("Not initialized"));

        // when proper conditions are not met.

        Map<String, Object> docMap = new HashMap<>();

        // This will return false because getFessConfig() will fail
        // We verify the method handles the case gracefully
        try {
            emptyGenerator.isTarget(docMap);
        } catch (IllegalStateException e) {
            // Expected when container is not initialized

            }

            @Override
            public <T> T unwrap(Class<T> type) {
                return null;
            }
        };

        // Should handle exception gracefully and still return result
        assertEquals("1TestUser", sambaHelper.getAccountId(exceptionSID));
    }

    // Helper methods

    private SID createMockSID(final int type, final String accountName) {

            fail("writeThreadDump should handle invalid paths gracefully: " + e.getMessage());
        }
    }

    public void test_writeThreadDump_withNullPath() {
        try {
            ThreadDumpUtil.writeThreadDump(null);
            // Should not throw exception but log warning
        } catch (Exception e) {
            fail("writeThreadDump should handle null path gracefully: " + e.getMessage());
        }
    }

            }

            setupMockConfig("localhost:9200", "", "", invalidCertFile.getAbsolutePath());

            curlHelper.init();

            // Should handle invalid certificate gracefully
            SSLSocketFactory sslSocketFactory = getSSLSocketFactory(curlHelper);
            assertNull(sslSocketFactory);

        } catch (IOException e) {

        ComponentUtil.setFessConfig(fessConfig);

        // Create new instance after registering the updated config
        purgeDocJob = new PurgeDocJob();

        // Execute the job - should handle empty field name gracefully
        try {
            String result = purgeDocJob.execute();
            // The job should handle the exception internally but since QueryBuilders.rangeQuery

                // Expected due to missing dependencies in test environment
                assertTrue(true);
                return;
            }
            // Should handle null keywords gracefully
            assertNotNull(functionBuilders);
        } catch (Exception e) {
            // May throw exception due to null handling
            assertNotNull(e);
        }
    }

    }

    public void test_highlightedFields_withNull() {
        queryFieldConfig.highlightedFields = null;

        // When highlightedFields is null, the method should handle it gracefully
        // or throw an exception. Test the actual behavior.
        queryFieldConfig.highlightedFields(stream -> {
            // If it doesn't throw NPE, it should provide an empty stream