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/* eslint-disable import/no-dynamic-require, global-require */
import fs from 'fs';
import path from 'path';
import webpack from 'webpack';
import ExtractTextPlugin from 'extract-text-webpack-plugin';
import OptimizeCssAssetsPlugin from '../src/';
import { readFileOrEmpty, defaultConfig, checkForWebpackErrors } from './util/helpers';
const cases = process.env.CASES ? process.env.CASES.split(',') : fs.readdirSync(path.join(__dirname, 'cases'));
describe('Webpack Integration Tests', () => {
cases.forEach((testCase) => {
if (/^_skip_/.test(testCase)) return;
it(testCase, (done) => {
const testDirectory = path.join(__dirname, 'cases', testCase);
const outputDirectory = path.join(__dirname, 'js', testCase);
const expectedDirectory = path.join(testDirectory, 'expected');
const configFile = path.join(testDirectory, 'webpack.config.js');
const config = Object.assign(
fs.existsSync(configFile) ? require(configFile) : { entry: { test: './index.js' } },
{
context: testDirectory,
output: {
filename: '[name].js',
path: outputDirectory
}
}
);
webpack(config, (err, stats) => {
checkForWebpackErrors({ err, stats, done });
fs.readdirSync(expectedDirectory).forEach((file) => {
const expectedFile = readFileOrEmpty(path.join(expectedDirectory, file));
const actualFile = readFileOrEmpty(path.join(outputDirectory, file));
expect(actualFile).toEqual(expectedFile);
expect(actualFile).toMatchSnapshot();
});
done();
});
});
});
it('calls cssProcessor with correct arguments', (done) => {
const destination = 'destination.css';
const expectedCss = readFileOrEmpty(__dirname + '/util/default.css');
const cssProcessorOptions = { discardComments: { removeAll: true } };
const cssProcessor = {
process: (actualCss, options) => {
expect(options).toEqual(expect.objectContaining(cssProcessorOptions));
expect(actualCss).toEqual(expectedCss);
return Promise.resolve({ css: actualCss });
}
};
const plugin = new OptimizeCssAssetsPlugin({ cssProcessor, cssProcessorOptions });
const config = Object.assign(defaultConfig, {plugins: [plugin, new ExtractTextPlugin(destination)]});
webpack(config, (err, stats) => {
checkForWebpackErrors({ err, stats, done });
done();
});
});
it('writes processed css to destination', (done) => {
const destination = 'destination.css';
const expectedCss = '.inifinity-pool{overflow:hidden;}';
const fakeCssProcessor = {
process: jest.fn().mockReturnValue(Promise.resolve({ css: expectedCss }))
};
const plugin = new OptimizeCssAssetsPlugin({ cssProcessor: fakeCssProcessor });
const config = Object.assign(defaultConfig, {plugins: [plugin, new ExtractTextPlugin(destination)]});
webpack(config, (err, stats) => {
checkForWebpackErrors({ err, stats, done });
const actualCss = readFileOrEmpty(__dirname + '/js/default-exports/destination.css');
expect(fakeCssProcessor.process).toHaveBeenCalled();
expect(actualCss).toEqual(expectedCss);
done();
});
});
});