```

以下のようなテキスト版を取得します:

```
1 validation error
path -> item_id
  value is not a valid integer (type=type_error.integer)
```

#### `RequestValidationError`と`ValidationError`

/// warning | "注意"

これらは今のあなたにとって重要でない場合は省略しても良い技術的な詳細です。

///

	if kerrors.IsNotFound(err) {
		return nil, fmt.Errorf("namespace: %s not found", ns)
	} else if err != nil {
		return nil, fmt.Errorf("failed to get namespace %s: %v", ns, err)
	}
	return nsObj, nil
}

func errorWithMessage(errMsg string, gwc *gateway.Gateway, err error) error {
	errorMsg := fmt.Sprintf("%s\t%v/%v", errMsg, gwc.Namespace, gwc.Name)
	if err != nil {
		errorMsg += fmt.Sprintf(": %s", err)

			s3Select.progressReader.Close()

			var stErr bzip2.StructuralError
			if errors.As(err, &stErr) {
				return errInvalidCompression(err, s3Select.Input.CompressionType)
			}
			// Test these compressor errors
			errs := []error{
				gzip.ErrHeader, gzip.ErrChecksum,
				s2.ErrCorrupt, s2.ErrUnsupported, s2.ErrCRC,

	}
	return toAPIError(ctx, fmt.Errorf("error exporting %s from %s with: %w", entity, fname, err))
}

// wraps import error for more context
func importError(ctx context.Context, err error, fname, entity string) APIError {
	if entity == "" {
		return toAPIError(ctx, fmt.Errorf("error importing %s with: %w", fname, err))
	}
	return toAPIError(ctx, fmt.Errorf("error importing %s from %s with: %w", entity, fname, err))
}

	if err := DB.Create(&data).Error; err != nil {
		t.Errorf("Should got no error when creating data, but got %v", err)
	}

	if err := DB.Model(&data).Update("password", EncryptedData("xnewpass")).Error; err == nil {
		t.Errorf("Should failed to update data with invalid data")
	}

	if err := DB.Model(&data).Update("password", EncryptedData("newpass")).Error; err != nil {

	if err := DB.Create(&product).Error; err == nil {
		t.Errorf("should got failed to save, but error is nil")
	}

	if DB.First(&Product4{}, "name = ?", product.Name).Error == nil {
		t.Errorf("should got RecordNotFound, but got nil")
	}

	product = Product4{Name: "Product-2", Price: 100, Item: ProductItem{Code: "valid"}}
	if err := DB.Create(&product).Error; err != nil {

				t.Errorf("%s: missing error, want %s", fileline, all)
			} else if !strings.Contains(err, mm[0][1]) {
				t.Errorf("%s: wrong error for %s:\n%s", fileline, all, err)
			}
		} else {
			if errors[fileline] != "" {
				t.Errorf("unexpected error on %s: %v", fileline, errors[fileline])
			}
		}
		delete(errors, fileline)
	}
	var extra []string
	for key := range errors {
		extra = append(extra, key)

		t.Errorf("Table with escape character, got %v", sql)
	}

	if DB.First(&User{}, "name = ?", user.Name).Error == nil {
		t.Errorf("Can't find a soft deleted record")
	}

	count = 0
	if DB.Model(&User{}).Where("name = ?", user.Name).Count(&count).Error != nil || count != 0 {
		t.Errorf("Count soft deleted record, expects: %v, got: %v", 0, count)
	}

	age = 0

)

type Watcher struct {
	watcher *fsnotify.Watcher
	Events  chan struct{}
	Errors  chan error
}

// Waits until a file is modified (returns nil), the context is cancelled (returns context error), or returns error
func (w *Watcher) Wait(ctx context.Context) error {
	select {
	case <-w.Events:
		return nil
	case err := <-w.Errors:
		return err
	case <-ctx.Done():
		return ctx.Err()
	}
}

		t.Errorf("no error should happen when auto migrate, but got %v", err)
	}

	if err := DB.Create(&EmptyStruct{}).Error; err != nil {
		t.Errorf("No error should happen when creating user, but got %v", err)
	}
}

func TestCreateEmptySlice(t *testing.T) {
	data := []User{}
	if err := DB.Create(&data).Error; err != gorm.ErrEmptySlice {
		t.Errorf("no data should be created, got %v", err)
	}