Throwable ioCause = new java.io.IOException("IO error");
        GsaConfigException ioException = new GsaConfigException("GSA IO error", ioCause);
        assertNotNull(ioException);
        assertTrue(ioException.getCause() instanceof java.io.IOException);

        // Test with custom exception
        Throwable customCause = new FessSystemException("Custom Fess error");

func TestBadExpr(t *testing.T) {
	for i, test := range badExprTests {
		err := runBadTest(i, test, t)
		if err == nil {
			if test.error != "" {
				t.Errorf("#%d: %q: expected error %q; got none", i, test.input, test.error)
			}
			continue
		}
		if !strings.Contains(err.Error(), test.error) {
			t.Errorf("#%d: expected error %q; got %q", i, test.error, err)
			continue
		}
	}
}

	defer cancel()
	e, err := c.endpoint(bucket, true)
	if err != nil {
		return err
	}
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, e, nil)
	if err != nil {
		return err
	}
	if err = c.addAuthHeader(req); err != nil {
		return err
	}
	resp, err := c.httpClient.Do(req)
	if err != nil {
		return err
	}
	xhttp.DrainBody(resp.Body)

	logger.LogOnceIf(ctx, "internal", err, id, errKind...)
}

func transitionLogIf(ctx context.Context, err error, errKind ...any) {
	logger.LogIf(ctx, "transition", err, errKind...)
}

func configLogIf(ctx context.Context, err error, errKind ...any) {
	logger.LogIf(ctx, "config", err, errKind...)
}

class JsonApiResponse(JSONResponse):
    media_type = "application/vnd.api+json"


class Error(BaseModel):
    status: str
    title: str


class JsonApiError(BaseModel):
    errors: list[Error]


@app.get(
    "/a/{id}",
    response_class=JsonApiResponse,
    responses={422: {"description": "Error", "model": JsonApiError}},
)
async def a(id):
    pass  # pragma: no cover

    //                                                                      ==============
    /**
     * Displays the bad request error page.
     *
     * @param form the error form containing error information
     * @return HTML response for the bad request error page
     */
    @Execute
    public HtmlResponse index(final ErrorForm form) {
        return asHtml(virtualHost(path_Error_BadRequestJsp));
    }

     * Default constructor for ErrorBusyAction.
     */
    public ErrorBusyAction() {
        super();
    }

    /**
     * Displays the busy error page.
     *
     * @param form the error form containing error information
     * @return HTML response for the busy error page
     */
    @Execute
    public HtmlResponse index(final ErrorForm form) {
        return asHtml(virtualHost(path_Error_BusyJsp));
    }

func TestUpdateHasManyAssociations(t *testing.T) {
	user := *GetUser("update-has-many", Config{})

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	user.Pets = []*Pet{{Name: "pet1"}, {Name: "pet2"}}
	if err := DB.Save(&user).Error; err != nil {
		t.Fatalf("errors happened when update: %v", err)
	}

	var user2 User
	DB.Preload("Pets").Find(&user2, "id = ?", user.ID)

func (s *Stream) Results(next func(b []byte) error) (err error) {
	done := false
	defer func() {
		if s.cancel != nil {
			s.cancel(err)
		}

		if !done {
			// Drain channel.
			for range s.responses {
			}
		}
	}()
	doneCh := s.ctx.Done()
	for {
		select {
		case <-doneCh:
			if err := context.Cause(s.ctx); !errors.Is(err, errStreamEOF) {
				return err
			}

	if e.Cause == nil {
		return e.Err
	}
	return fmt.Sprintf("%s: %v", e.Err, e.Cause)
}

func errKeyCreationFailed(err error) Error {
	return Error{
		Code:    http.StatusInternalServerError,
		APICode: "kms:KeyCreationFailed",
		Err:     "failed to create KMS key",
		Cause:   err,
	}
}

func errKeyDeletionFailed(err error) Error {
	return Error{
		Code:    http.StatusInternalServerError,