错误:超时 - 在指定的超时时间内未调用异步回调.... .DEFAULT_TIMEOUT_INTERVAL

时间:2015-03-24 07:20:28

标签: angularjs unit-testing asynchronous jasmine

我有一个角度服务类: -

angular.module('triggerTips')
       .service('userData', function ($rootScope, $http, $log, $firebase) {

    this._log = {
        service : 'userData'
    };

    // Synchronized objects storing the user data
    var config;
    var userState;

    // Loads the user data from firebase
    this.init = function(readyCallback) {
        var log = angular.extend({}, this._log);
        log.funct = 'init';

        var fireRef = new Firebase('https://XYZfirebaseio.com/' + $rootScope.clientName);
       config = $firebase(fireRef.child('config')).$asObject();
       userState = $firebase(fireRef.child('userState').child($rootScope.userName)).$asObject();

  Promise.all([config.$loaded(), userState.$loaded()]).
    then(
      function() {
        if(config == null || Object.keys(config).length < 4) {
          log.message = 'Invalid config';
          $log.error(log);
          return;
        }

        if(!userState.userProperties) {
          userState.userProperties = {};
        }

        if(!userState.contentProperties) {
          userState.contentProperties = {};
        } 

        log.message = 'User Properties: ' + JSON.stringify(userState.userProperties);
        $log.debug(log);

        log.message = 'Content Properties: ' + JSON.stringify(userState.contentProperties);
        $log.debug(log);

        log.message = 'Loaded user data from firebase';
        $log.debug(log);
        readyCallback();
      },
      function() {
        log.message = 'Unable to load user data from firebase';
        $log.error(log);
      }
    );
};

// Returns the initial tip configuration
this.getConfig = function() {
  return config;
};

// Set the value of a user property
// A user property is something about the user himself
this.setUserProperty = function(property, value) {
  if(!userState.userProperties) {
    userState.userProperties = {};
  }
  userState.userProperties[property] = value;
  userState.$save();
  $rootScope.$broadcast('user-property-change', property);
};

// Get the value of a user property
this.getUserProperty = function(property) {
  if(userState.userProperties) {
    return userState.userProperties[property];
  }
};

// Set the value of a user content property
// A content property is something about a particular peice of content for a particular user
this.setContentProperty = function(contentName, property, value) {
  if(!userState.contentProperties[contentName]) {
    userState.contentProperties[contentName] = {};
  }

  userState.contentProperties[contentName][property] = value;
  userState.$save();
  $rootScope.$broadcast('content-property-change', contentName, property);
};

// Increment a count property on the user state for a given tip
this.incrementContentProperty = function(contentName, property) {
  if(!userState.contentProperties[contentName]) {
    userState.contentProperties[contentName] = {};
  }
  if(!userState.contentProperties[contentName][property]) {
    userState.contentProperties[contentName][property] = 0;
  }

  userState.contentProperties[contentName][property]++;
  userState.$save();
  $rootScope.$broadcast('content-property-change', contentName, property);
};

// Returns the user state for a given tip and property
this.getContentProperty = function(contentName, property) {
  if(userState.contentProperties) {
    var t = userState.contentProperties[contentName];
    if(t) {
      return t[property];
    }
  }
};
});

我正在尝试使用jasmine对此服务进行单元测试: -

我的单元测试是: -

    'use strict';

describe('Service: userData', function () {

  // load the service's module
  beforeEach(function() {
    module('triggerTips');
  });

  // instantiate service
  var userData;
  beforeEach(inject(function (_userData_) {
    userData = _userData_;
  }));

  it('should load correctly', function () {
    expect(!!userData).toBe(true);
  });

  describe('after being initialized', function () {

    beforeEach(function(done) {
      // Unable to get this working because the callback is never called
        userData.init(function() {
            done();
        });
        jasmine.DEFAULT_TIMEOUT_INTERVAL = 2000;
    });

    it('should have a valid config', function (done) {
         setTimeout(function() {
             expect(Object.keys(userData.getConfig()).length == 0);
             done();
           }, 1500);}); }); });

我读到了Jasmine中的异步支持,但由于我不熟悉使用JavaScript进行单元测试,因此无法实现。

我收到错误:

  

在指定的超时时间内未调用异步回调   jasmine.DEFAULT_TIMEOUT_INTERVAL

有人可以通过一些解释帮我提供我的代码的工作示例吗?

1 个答案:

答案 0 :(得分:4)

我建议您将setTimeout替换为$timeout,以加快您的规范套件。您需要ngMock才能成为规范套件的一部分,以便以预期的方式实现这一目标,但这似乎已经考虑到了您的规范。好东西。

然后,为了使规范“消失”的异步性质,你会打电话:

$timeout.flush([delay])其中delay是可选的。

  • 如果没有传递延迟,所有待处理的异步任务(角度世界中的 )将完成他们正在做的事情。
  • 如果延迟通过,则指定延迟内的所有待处理任务都将完成。超出指定延迟的人将保持“待定”状态。

有了这个,你可以删除done回调并写下你的测试:

describe('after being initialized', function () {
  var $timeout;

  beforeEach(function () {
    // Unable to get this working because the callback is never called
    userData.init();

    inject(function ($injector) {
      $timeout = $injector.get('$timeout');
    });
  }));

  it('should have a valid config', function () {
    $timeout.flush();
    // callback should've been called now that we flushed().
    expect(Object.keys(userData.getConfig()).length).toEqual(0);
  });
});

您使用的Promise实施方案是什么?我看到了Promise.all的电话,但为了继续我的回答,我将假设它等同于$q.all。运行$timeout.flush应该注意解决这些值。

如果你想对Jasmine中的promise的被拒绝/已解决的值写下期望,我会调查像jasmine-promise-matchers这样的东西来使它干净漂亮,但是除非你可以这样做:< / p>

// $q
function get () {
  var p1 = $timeout(function () { return 'x'; }, 250);
  var p2 = $timeout(function () { return 'y'; }, 2500); 

  return $q.all([p1, p2]);
}

// expectation
it('is correct', function () {
  var res; 

  get().then(function (r) {
    res = r;
  });

  $timeout.flush(2500);

  expect(res).toEqual(['x', 'y']);
});

根据您的设置,您可能会或可能不会根据您的本地config变量隐藏/监视(取决于间谍的框架定义) ,但这是我认为的另一个故事。

我根本不熟悉$ firebase(某事)。$ asObject。$ loaded - 因此我可能在这里错过了一些东西,但假设它的工作原理“就像任何其他承诺一样”你应该对去。

<强> jsfiddle