ComponentUtil.register(systemHelper, "systemHelper");
        ComponentUtil.setFessConfig(fessConfig);
        ComponentUtil.register(notificationHelper, "notificationHelper");
        // Postbox is handled by the framework

        // Execute
        String result = pingSearchEngineJob.execute();

        // Assert
        assertEquals("test-cluster is alive.", result);
    }

        //    }
        //}
        //try {
        //    return CDef.DefMeta.valueOf(searchName);
        //} catch (IllegalArgumentException ignored) { // not found
        //    return null; // handled later
        //}
    }

    @Override
    public OptionalThing<String> determineAlias(final Locale locale) {
        return OptionalObject.empty();
    }

            // expected
            assertTrue(e.getMessage().contains("Not found the classification: null"));
        } catch (NullPointerException e) {
            // Also acceptable if null is not handled explicitly
        }
    }

    @Test
    public void test_findOnMainSchema_alwaysReturnsNull() {
        // Since the implementation always returns null (no DBFlute classification used),

            systemProperties.remove("saml.sp.base.url");
        }
    }

    @Test
    public void test_buildDefaultUrl_withTrailingSlash() throws Exception {
        // Test that trailing slash is handled correctly
        SamlAuthenticator authenticator = new SamlAuthenticator();

        DynamicProperties systemProperties = ComponentUtil.getSystemProperties();
        try {

        // Note: Full testing requires a running OpenSearch cluster
        assertTrue(true);
    }

    @Test
    public void test_fieldSetConfiguration() {
        // Test that field set configuration is properly handled
        Set<String> fieldSet = new HashSet<>();
        fieldSet.add("cluster_name");
        fieldSet.add("status");

        FessConfig mockConfig = new FessConfig.SimpleImpl() {

            if ((member instanceof JApiClass) && member.getCompatibilityChanges().isEmpty()) {
                // A member of the class breaks binary compatibility.
                // That will be handled when the member is passed to `maybeViolation`.
                return null;
            }
            if (member instanceof JApiImplementedInterface) {

        // Execute
        final InvalidQueryException exception = new InvalidQueryException(messageCode, longMessage);

        // Verify long message is handled correctly
        assertNotNull(exception);
        assertEquals(longMessage, exception.getMessage());
        assertEquals(messageCode, exception.getMessageCode());
    }

    @Test

        Set<RequestData> result = crawlerThread.getAnchorSet(urls);
        assertNotNull(result, "getAnchorSet should handle duplicates");

        // Since it returns a Set, duplicates should be handled by URL comparison
        // The exact behavior depends on RequestData.equals() implementation
        assertTrue("Should have at most 5 items", result.size() <= 5);
    }

            // Should return empty or minimal results
            assertTrue(results.size() <= 10);
        }
    }

    /**
     * Test search with negative start position (should be handled gracefully).
     */
    @Test
    public void test_searchWithNegativeStartPosition() throws Exception {
        try (RankFusionProcessor processor = new RankFusionProcessor()) {

        // Test edge cases
        generator.setCommandTimeout(0L);
        generator.setCommandTimeout(-1L);
        generator.setCommandTimeout(Long.MAX_VALUE);

        assertTrue("Timeout edge cases should be handled", true);
    }

    // Test ProcessDestroyer inner class
    @Test
    public void test_processDestroyer_creation() throws Exception {