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Viewing file:     cover.test.js (4.1 KB)      -rw-r--r--

import { Jimp, mkJGD, hasOwnProp } from "@jimp/test-utils";
import configure from "@jimp/custom";
import crop from "@jimp/plugin-crop";
import scale from "@jimp/plugin-scale";
import resize from "@jimp/plugin-resize";

import cover from "../src";
import { expectToBeJGD } from "@jimp/test-utils/src";

const jimp = configure({ plugins: [resize, scale, crop, cover] }, Jimp);

describe("All align combinations for cover", () => {
  const verticalJGD = mkJGD(
    "▴▴▴▴▸▸▸▸",
    "▴▴▴▴▸▸▸▸",
    "▴▴▴▴▸▸▸▸",
    "▴▴▴▴▸▸▸▸",
    "▴▴▴▴▸▸▸▸",
    "▴▴▴▴▸▸▸▸",
    "▾▾▾▾◆◆◆◆",
    "▾▾▾▾◆◆◆◆",
    "▾▾▾▾◆◆◆◆",
    "▾▾▾▾◆◆◆◆",
    "▾▾▾▾◆◆◆◆",
    "▾▾▾▾◆◆◆◆"
  );

  const horizontalJGD = mkJGD(
    "▴▴▴▴▴▴▸▸▸▸▸▸",
    "▴▴▴▴▴▴▸▸▸▸▸▸",
    "▴▴▴▴▴▴▸▸▸▸▸▸",
    "▴▴▴▴▴▴▸▸▸▸▸▸",
    "▾▾▾▾▾▾◆◆◆◆◆◆",
    "▾▾▾▾▾▾◆◆◆◆◆◆",
    "▾▾▾▾▾▾◆◆◆◆◆◆",
    "▾▾▾▾▾▾◆◆◆◆◆◆"
  );

  let vertical;
  let horizontal; // stores the Jimp instances of the JGD images above.

  before((done) => {
    const img1 = jimp.read(verticalJGD);
    const img2 = jimp.read(horizontalJGD);
    Promise.all([img1, img2])
      .then((images) => {
        vertical = images[0];
        horizontal = images[1];
        done();
      })
      .catch(done);
  });

  const tests = {}; // Stores the expected result for each alignment combination.
  tests["LEFT TOP"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▴▴▸▸", "▴▴▸▸", "▾▾◆◆"),
      horiz: mkJGD("▴▴▴▸", "▴▴▴▸", "▾▾▾◆", "▾▾▾◆"),
    },
  };
  tests["CENTER TOP"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▴▴▸▸", "▴▴▸▸", "▾▾◆◆"),
      horiz: mkJGD("▴▴▸▸", "▴▴▸▸", "▾▾◆◆", "▾▾◆◆"),
    },
  };
  tests["RIGHT TOP"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▴▴▸▸", "▴▴▸▸", "▾▾◆◆"),
      horiz: mkJGD("▴▸▸▸", "▴▸▸▸", "▾◆◆◆", "▾◆◆◆"),
    },
  };

  tests["LEFT MIDDLE"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▴▴▸▸", "▾▾◆◆", "▾▾◆◆"),
      horiz: mkJGD("▴▴▴▸", "▴▴▴▸", "▾▾▾◆", "▾▾▾◆"),
    },
  };
  tests["CENTER MIDDLE"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▴▴▸▸", "▾▾◆◆", "▾▾◆◆"),
      horiz: mkJGD("▴▴▸▸", "▴▴▸▸", "▾▾◆◆", "▾▾◆◆"),
    },
  };
  tests["RIGHT MIDDLE"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▴▴▸▸", "▾▾◆◆", "▾▾◆◆"),
      horiz: mkJGD("▴▸▸▸", "▴▸▸▸", "▾◆◆◆", "▾◆◆◆"),
    },
  };

  tests["LEFT BOTTOM"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▾▾◆◆", "▾▾◆◆", "▾▾◆◆"),
      horiz: mkJGD("▴▴▴▸", "▴▴▴▸", "▾▾▾◆", "▾▾▾◆"),
    },
  };
  tests["CENTER BOTTOM"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▾▾◆◆", "▾▾◆◆", "▾▾◆◆"),
      horiz: mkJGD("▴▴▸▸", "▴▴▸▸", "▾▾◆◆", "▾▾◆◆"),
    },
  };
  tests["RIGHT BOTTOM"] = {
    cover: {
      verti: mkJGD("▴▴▸▸", "▾▾◆◆", "▾▾◆◆", "▾▾◆◆"),
      horiz: mkJGD("▴▸▸▸", "▴▸▸▸", "▾◆◆◆", "▾◆◆◆"),
    },
  };

  function runAlignTest(align) {
    const jgdCoverV = tests[align].cover.verti;
    const jgdCoverH = tests[align].cover.horiz;
    let a = align.split(" ");
    a = Jimp["HORIZONTAL_ALIGN_" + a[0]] | Jimp["VERTICAL_ALIGN_" + a[1]];
    it("cover aligned to " + align, () => {
      expectToBeJGD(vertical.clone().cover(4, 4, a).getJGDSync(), jgdCoverV);
      expectToBeJGD(horizontal.clone().cover(4, 4, a).getJGDSync(), jgdCoverH);
    });
  }

  for (const align in tests) if (hasOwnProp(tests, align)) runAlignTest(align);
});