expect(MessagingApiBlobClientMock).toHaveBeenCalledWith({ channelAccessToken: "line-token" });

expect(setRichMenuImageMock).toHaveBeenCalledOnce();

const [richMenuId, blob] = setRichMenuImageMock.mock.calls.at(0) ?? [];

const [richMenuId, blob] = setRichMenuImageMock.mock.calls[0] ?? [];

expect(richMenuId).toBe("rich-menu-1");

expect(blob).toBeInstanceOf(Blob);

expect((blob as Blob).type).toBe("image/png");

});

expect(setRichMenuImageMock).toHaveBeenCalledOnce();

const blob = setRichMenuImageMock.mock.calls.at(0)?.[1] as Blob;

const blob = setRichMenuImageMock.mock.calls[0]?.[1] as Blob;

expect(blob.type).toBe("image/jpeg");

await expect(blob.arrayBuffer()).resolves.toEqual(

imageBytes.buffer.slice(imageBytes.byteOffset, imageBytes.byteOffset + imageBytes.byteLength),