如何模拟返回图像缓冲区的axios调用

const axios = require('axios');
const fs = require('fs');
const { createCanvas, loadImage } = require('canvas');

async function simulateAxiosCall() {
  const canvas = createCanvas(800, 600);
  const ctx = canvas.getContext('2d');

  const imageUrl = 'https://example.com/image.jpg'; // 替换为实际的图像URL
  const image = await loadImage(imageUrl);
  ctx.drawImage(image, 0, 0);

  const buffer = canvas.toBuffer('image/jpeg');

  const response = {
    data: buffer,
    status: 200,
    statusText: 'OK',
    headers: {
      'Content-Type': 'image/jpeg',
    },
  };

  return response;
}

simulateAxiosCall()
  .then((response) => {
    // 处理返回的图像缓冲区
    const buffer = response.data;
    fs.writeFileSync('image.jpg', buffer);
    console.log('图像缓冲区已保存为image.jpg');
  })
  .catch((error) => {
    console.error('模拟axios调用出错:', error);
  });