old_contents: var chai = require('chai');
  var lib = require('../src/index');
  var assert = chai.assert;
  
  describe('library', function () {
      it('should expose run', function () {
          assert.ok(lib.run);
      });
      it('should expose TestCase', function () {
          assert.ok(lib.TestCase);
      });
  });
  
new_contents: var chai = require('chai');
  var lib = require('../src/index');
  var assert = chai.assert;
  
  describe('library', function () {
      it('should expose run', function () {
          assert.ok(lib.run);
      });
      it('should expose TestCase', function () {
          assert.ok(lib.scenario.TestCase);
      });
  });
  
subject: Fix failing test.