code: function validate () {
    var env = state.env('NODE_ENV');
    var uri = state.env('MONGO_URI');
    var notTestEnv = env !== 'test';
    if (notTestEnv) {
      throw new Error('NODE_ENV must be set to "test".');
    }
    var notTestDb = word.test(uri) === false;
    if (notTestDb) {
      throw new Error('MONGO_URI must contain "test" word.');
    }
  }
docs: being able to drop the database is kind of a big deal disallow outside of 'test' environment, and also outside of 'test' database