Ember Addon Build Test Example

application-fixture.js

/* eslint-env node */

// This is for TEST_APPLICATION_FIXTURE in the next file
module.exports = function() {
  return {
    application: {
      app: {
        styles: {
          'app.css': ''
        },
        'index.html': ''
      },
      config: {
        'environment.js': "module.exports = function() { return { modulePrefix: 'application' } };"
      },
      'ember-cli-build.js': 'module.exports = {};',
      'package.json': JSON.stringify({
        name: 'application',
        devDependencies: {
          'ember-cli': '*',
          'ember-cli-babel': '*',
          'ember-cli-htmlbars': '*',
          'ember-engines': '*',
          'ember-source': '*',
          'loader.js': '*'
        },
        'ember-addon': {
          paths: ['../my-addon-name']
        }
      }),
      tmp: {}
    }
  }
};

ember-addon-build-test.js

/* eslint-env node, mocha */
'use strict';

const fs = require('fs');
const path = require('path');

const co = require('co');
const expect = require('chai').expect;
const helper = require('broccoli-test-helper');
const createBuilder = helper.createBuilder;
const createTempDir = helper.createTempDir;
const EmberApp = require('ember-cli/lib/broccoli/ember-app');
const _resetTreeCache = require('ember-cli/lib/models/addon')._resetTreeCache;

const ADDON_ROOT = path.resolve(__dirname, '..', '..');

describe('engines', function () {
  this.timeout(10000);

  let cwd;
  beforeEach(function () {
    cwd = process.cwd();
  });

  afterEach(function () {
    process.chdir(cwd);
    _resetTreeCache();
  });

  it(
    'builds things correctly',
    co.wrap(function* () {
      const input = yield createTempDir();

      /*
        Expected file system layout:
        ${tmp-dir}/       <- process.cwd, used as the ember-cli project.root
          application/    <- fixture files for a minimal application
          my-addon-name/  <- symlink; installed in application via package.json ember-addon.paths
          node_modules/   <- symlink
      */
      input.write(TEST_APPLICATION_FIXTURE);

      fs.symlinkSync(
        path.join(ADDON_ROOT, 'node_modules'),
        path.join(input.path(), 'node_modules')
      );
      fs.symlinkSync(
        ADDON_ROOT,
        path.join(input.path(), 'my-addon-name')
      );

      process.chdir(input.path());

      const emberApp = new EmberApp();
      const output = createBuilder(emberApp.toTree());

      try {
        yield output.build();
        const files = output.read();

        expect(files.assets['tailwind.css']).to.contain('example css');
      } finally {
        yield output.dispose();
        yield input.dispose();
      }
    })
  );
});