File: loader.test.js

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import path from 'path';

import {
  compile,
  execute,
  getCompiler,
  normalizeErrors,
  readAsset,
} from './helpers';

describe('loader', () => {
  it('should work with unspecified value', async () => {
    const compiler = getCompiler('simple.js');
    const stats = await compile(compiler);

    expect(
      execute(readAsset('main.bundle.js', compiler, stats))
    ).toMatchSnapshot('result');
    expect(Object.keys(stats.compilation.assets)).toMatchSnapshot('assets');
    expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
      'warnings'
    );
    expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot('errors');
  });

  it('should work with SVG', async () => {
    const compiler = getCompiler('simple-svg.js');
    const stats = await compile(compiler);

    expect(
      execute(readAsset('main.bundle.js', compiler, stats))
    ).toMatchSnapshot('result');
    expect(Object.keys(stats.compilation.assets)).toMatchSnapshot('assets');
    expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
      'warnings'
    );
    expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot('errors');
  });

  it('should work with loader that exported string', async () => {
    const compiler = getCompiler(
      'simple.js',
      {},
      {
        module: {
          rules: [
            {
              test: /\.(gif|jpg|png|svg)$/i,
              rules: [
                {
                  loader: path.resolve(__dirname, '../src'),
                },
                {
                  loader: path.resolve(__dirname, 'fixtures/string-raw-loader'),
                },
              ],
            },
          ],
        },
      }
    );
    const stats = await compile(compiler);

    expect(
      execute(readAsset('main.bundle.js', compiler, stats))
    ).toMatchSnapshot('result');
    expect(Object.keys(stats.compilation.assets)).toMatchSnapshot('assets');
    expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
      'warnings'
    );
    expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot('errors');
  });

  it('should work with ModuleConcatenationPlugin', async () => {
    const compiler = getCompiler(
      'concated.js',
      {},
      {
        mode: 'production',
        optimization: {
          minimize: false,
        },
      }
    );
    const stats = await compile(compiler);

    expect(
      execute(readAsset('main.bundle.js', compiler, stats))
    ).toMatchSnapshot('result');
    expect(Object.keys(stats.compilation.assets)).toMatchSnapshot('assets');
    expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
      'warnings'
    );
    expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot('errors');
  });

  it('should work with ModuleConcatenationPlugin with fallback', async () => {
    const compiler = getCompiler(
      'concated.js',
      {
        limit: 10,
      },
      {
        mode: 'production',
        optimization: {
          minimize: false,
        },
      }
    );
    const stats = await compile(compiler);

    expect(
      execute(readAsset('main.bundle.js', compiler, stats))
    ).toMatchSnapshot('result');
    expect(Object.keys(stats.compilation.assets)).toMatchSnapshot('assets');
    expect(normalizeErrors(stats.compilation.warnings)).toMatchSnapshot(
      'warnings'
    );
    expect(normalizeErrors(stats.compilation.errors)).toMatchSnapshot('errors');
  });
});