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Filename : color.test.js
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import { Jimp, donutJGD } from "@jimp/test-utils";
import configure from "@jimp/custom";

import color from "../src";

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

describe("canvas color transformation", () => {
  const redDonutJGD = donutJGD(0x00000000, 0xff000088, 0xff0000ff);

  it("can apply more than one color transformation", async () => {
    const image = await jimp.read(redDonutJGD);
    const newJGD = image
      .color([
        { apply: "hue", params: [-180] },
        { apply: "lighten", params: [25] },
      ])
      .getJGDSync();

    newJGD.should.be.sameJGD(donutJGD(0x40404000, 0x80ffff88, 0x80ffffff));
  });

  it("lighten", async () => {
    const image = await jimp.read(redDonutJGD);

    image
      .color([{ apply: "lighten", params: [25] }])
      .getJGDSync()
      .should.be.sameJGD(donutJGD(0x40404000, 0xff808088, 0xff8080ff));
  });

  it("brighten", async () => {
    const image = await jimp.read(redDonutJGD);

    image
      .color([{ apply: "brighten", params: [25] }])
      .getJGDSync()
      .should.be.sameJGD(donutJGD(0x40404000, 0xff404088, 0xff4040ff));
  });

  it("spin hue", async () => {
    const image = await jimp.read(redDonutJGD);

    image
      .color([{ apply: "hue", params: [150] }])
      .getJGDSync()
      .should.be.sameJGD(donutJGD(0x00000000, 0x00ff8088, 0x00ff80ff));
  });
});