eleventy-plugin-local-respimg/tests/includes.js

Eleventy plugin for optimizing and making responsive local images

/**
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const test = require('ava');
const { promisify } = require('util');
const rimraf = promisify(require('rimraf'));

const path = require('path');
const { readdirSync, statSync } = require('fs');

const respimgSetup = require('../lib/respimg');

const sourcePath = path.join(__dirname, 'fixtures');
const outputBase = path.join(__dirname, 'output', 'includes');

// // Ensure no images exist in the output base before starting
test.before('Cleanup Output Images', async t => {
  await rimraf(outputBase);
});

// Clean up after yourself
test.after.always('Cleanup Output Images', async t => {
  await rimraf(outputBase);
});

test('Optimizes Additional Images', async t => {
  const input = '<h1>Hello World</h1>';
  const outputPath = 'file.html';
  const output = '<h1>Hello World</h1>';
  const transformer = respimgSetup({
    folders: {
      source: sourcePath,
      output: outputBase,
    },
    images: {
      additional: ['images/**/*'],
    },
  });
  const expectedImages = ['fish.svg', 'crowne-plaza-hefei.jpg', 'crowne-plaza-hefei.png', 'fugu-edit.gif'].sort();

  t.is(await transformer(input, outputPath), output);
  t.deepEqual(readdirSync(path.join(outputBase, 'images')).sort(), expectedImages);

  expectedImages.forEach(image => {
    const inputStats = statSync(path.join(sourcePath, 'images', image));
    const outputStats = statSync(path.join(outputBase, 'images', image));
    t.true(outputStats.size <= inputStats.size, `Optimized "${image}"`);
  });
});