YueWen/node_modules/@jimp/plugin-normalize/test/normalize.test.js

import { Jimp, mkJGD } from '@jimp/test-utils';
import configure from '@jimp/custom';

import normalize from '../src';

const jimp = configure({ plugins: [normalize] }, Jimp);

describe('Normalize', () => {
  it('change grayscale image', async () => {
    const image = await jimp.read(mkJGD('36▦', '6▦9', '▦9C'));

    image
      .normalize()
      .getJGDSync()
      .should.be.sameJGD(mkJGD('■5▦', '5▦A', '▦A□'));
  });

  it('change red/blue image', async () => {
    const image = await jimp.read({
      width: 3,
      height: 2,
      data: [
        0x000000ff,
        0x400022ff,
        0x40002200,
        0x400000ff,
        0x000022ff,
        0x800055ff
      ]
    });

    image
      .normalize()
      .getJGDSync()
      .should.be.sameJGD({
        width: 3,
        height: 2,
        data: [
          0x000000ff,
          0x7f0066ff,
          0x7f006600,
          0x7f0000ff,
          0x000066ff,
          0xff00ffff
        ]
      });
  });
});