Function signUpAll

spec/ParseUser.spec.js:907–918

(list, optionsOrCallback)

  });

  function signUpAll(list, optionsOrCallback) {
    let promise = Promise.resolve();
    list.forEach(user => {
      promise = promise.then(function () {
        return user.signUp();
      });
    });
    promise = promise.then(function () {
      return list;
    });
    return promise.then(optionsOrCallback);
  }

  it('contained in user array queries', async done => {
    const USERS = 4;