old_contents: 'use strict';
  var path = require('path');
  var assert = require('yeoman-assert');
  var helpers = require('yeoman-test');
  
  describe('generator-pug-gulp-sass-bootstrap:app', function () {
    before(function () {
      return helpers.run(path.join(__dirname, '../generators/app'))
        .withPrompts({someAnswer: true})
        .toPromise();
    });
  
    it('creates files', function () {
      assert.file([
        'dummyfile.txt'
      ]);
    });
  });
  
new_contents: 'use strict';
  var path = require('path');
  var assert = require('yeoman-assert');
  var helpers = require('yeoman-test');
  
  describe('generator-pug-gulp-sass-bootstrap:app', function () {
    before(function () {
      return helpers.run(path.join(__dirname, '../generators/app'))
        .withPrompts({someAnswer: true})
        .toPromise();
    });
  
    it('creates files', function () {
      assert.file([
        'dummyfile.txt'
      ]);
    });
  
    it('installs bootstrap', function (done) {
      helpers.mockPrompt(this.app, {
        format: 'css'
      });
  
      this.app.run(function () {
        assert.equal(this.bowerInstallCalls[0][0], 'bootstrap');
        done();
      }.bind(this));
    });
  });
  
subject: add test for installing bootstrap