final Constraint constraint = CustomSize.class.getAnnotation(Constraint.class);
        assertNotNull(constraint, "Constraint annotation should be present");
        assertEquals("Validator class should be CustomSizeValidator", CustomSizeValidator.class, constraint.validatedBy()[0]);
    }

    // Test default values
    @Test
    public void test_defaultValues() throws Exception {

### `standard` 의존성 { #standard-dependencies }

`pip install "fastapi[standard]"`로 FastAPI를 설치하면 `standard` 그룹의 선택적 의존성이 함께 설치됩니다.

Pydantic이 사용하는:

* [`email-validator`](https://github.com/JoshData/python-email-validator) - 이메일 유효성 검사.

Starlette이 사용하는:

* [`httpx`](https://www.python-httpx.org) - `TestClient`를 사용하려면 필요.
* [`jinja2`](https://jinja.palletsprojects.com) - 기본 템플릿 설정을 사용하려면 필요.

			ssParity, minParityDrives)
	}

	if ssParity > setDriveCount/2 {
		return fmt.Errorf("parity %d should be less than or equal to %d", ssParity, setDriveCount/2)
	}

	return nil
}

// Validates the parity drives.
func validateParity(ssParity, rrsParity, setDriveCount int) (err error) {
	// SS parity drives should be greater than or equal to minParityDrives.
	// Parity below minParityDrives is not supported.

		cfg.AuditKafka = make(map[string]kafka.Config)
		if cfg, err = lookupAuditKafkaConfig(scfg, cfg); err != nil {
			return cfg, err
		}
	}
	return cfg, nil
}

// ValidateSubSysConfig - validates logger related config of given sub-system
func ValidateSubSysConfig(ctx context.Context, scfg config.Config, subSys string) error {
	// Lookup for legacy environment variables first

            new FessTimeResourceProvider(null);
            // Constructor may accept null, so test continues
            assertTrue(true);
        } catch (NullPointerException e) {
            // Expected if constructor validates input
            assertTrue(true);
        }
    }

    // Test with different time adjustments
    @Test
    public void test_withDifferentTimeAdjustments() {
        // Test zero adjustment

    //                                                                        Small Helper
    //                                                                        ============

    /**
     * Validates group attributes using LDAP manager.
     *
     * @param attributes the attributes to validate
     * @param throwError the error handler
     */

    * 使用 Pydantic 模型時，你可以把資料結構分層設計，並且用 Python 的 `List` 和 `Dict` 等型別來定義。
    * 驗證器讓我們可以輕鬆地定義和檢查複雜的資料結構，並把它們轉換成 JSON Schema 進行記錄。
    * 你可以擁有深層**巢狀的 JSON** 物件，並對它們進行驗證和註釋。
* **可擴展**：
    * Pydantic 讓我們可以定義客製化的資料型別，或者你可以使用帶有 validator 裝飾器的方法來擴展模型中的驗證功能。

### Document Language Detection

During crawling and indexing, Fess:

1. Detects language from document content using Apache Tika
2. Validates against `supported.languages` list
3. Creates language-specific fields (e.g., `content_ja`, `title_en`, `content_sv`)
4. Applies language-specific analyzers for better search results

Configured in `fess_config.properties`:

	if !auth.IsSecretKeyValid(secretKey) {
		return auth.ErrInvalidSecretKeyLength
	}

	return sys.store.UpdateUserSecretKey(ctx, accessKey, secretKey)
}

// purgeExpiredCredentialsForExternalSSO - validates if local credentials are still valid
// by checking remote IDP if the relevant users are still active and present.
func (sys *IAMSys) purgeExpiredCredentialsForExternalSSO(ctx context.Context) {

	if t, ok := config.Tiers[tierName]; ok {
		return t.Type, true
	}
	return madmin.Unsupported, false
}

// Add adds tier to config if it passes all validations.
func (config *TierConfigMgr) Add(ctx context.Context, tier madmin.TierConfig, ignoreInUse bool) error {
	config.Lock()
	defer config.Unlock()

	// check if tier name is in all caps
	tierName := tier.Name