Er *_*pra 11 unit-testing asynchronous jasmine angularjs
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];
}
}
};
});
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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);}); }); });
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我读到了Jasmine中的异步支持,但由于我对使用JavaScript的单元测试不熟悉,因此无法使其工作.
我收到一个错误:
在jasmine.DEFAULT_TIMEOUT_INTERVAL指定的超时内未调用异步回调
有人可以通过一些解释帮我提供我的代码的工作示例吗?
小智 4
我建议您替换setTimeout为$timeout以加快您的规格套件的速度。您将需要ngMock成为您的规范套件的一部分,以便使其按预期方式工作,但这似乎已经在您的规范中得到了处理。好东西。
然后,为了使规范的异步性质“消失”,您可以调用:
$timeout.flush([delay])其中 delay是可选的。
这样,您可以删除done回调并按如下方式编写测试:
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 () {
$timeout.flush();
// callback should've been called now that we flushed().
expect(Object.keys(userData.getConfig()).length).toEqual(0);
});
});
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Promise您使用什么实现?我看到一个调用,Promise.all但为了继续我的回答,我将假设它相当于$q.all。跑步$timeout.flush应该解决这些价值观。
如果你想在 Jasmine 中写下对承诺的拒绝/解决值的期望,我会研究诸如jasmine-promise-matchers之类的东西,以使其干净漂亮,但除非你可以这样做:
// $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']);
});
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根据您的设置,您可能需要或不需要对与本地变量相关的承诺进行存根/监视(取决于您的框架对间谍的定义)config,但我认为这完全是另一个故事。
我一点也不熟悉 $firebase(something).$asObject.$loaded - 因此我可能在这里错过了一些东西,但假设它“就像任何其他承诺一样”工作,你应该很高兴。
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