[英]How do I specify MongoDB key/value parameters in an $http.get with an AngularJS controller?
[英]How do I mock the result in a $http.get promise when testing my AngularJS controller?
经过多次阅读后,似乎从AngularJS控制器调用Web服务的推荐方法是使用工厂并从中返回一个promise。
这里我有一个简单的工厂,它调用一个示例API。
myApp.factory('MyFactory', ['$http',function($http) {
var people = {
requestPeople: function(x) {
var url = 'js/test.json';
return $http.get(url);
}
};
return people;
}]);
这就是我在控制器中调用它的方式
myApp.controller('MyCtrl1', ['$scope', 'MyFactory', function ($scope, MyFactory) {
MyFactory.requestPeople(22).then(function(result) {
$scope.peopleList = result;
});
}]);
虽然它工作得很好,我希望能够嘲笑result
是在传递时, then
被调用。 这可能吗?
到目前为止,我的尝试没有产生任 这是我的尝试:
//Fake service
var mockService = {
requestPeople: function () {
return {
then: function () {
return {"one":"three"};
}
}
}
};
//Some setup
beforeEach(module('myApp.controllers'));
var ctrl, scope;
beforeEach(inject(function ($rootScope, $controller) {
scope = $rootScope.$new();
ctrl = $controller('MyCtrl1', { $scope: scope, MyFactory: mockService });
}));
//Test
it('Event Types Empty should default to false', inject(function () {
expect(scope.peopleList.one).toBe('three');
}));
我在karma运行器中运行时得到的错误是
TypeError:'undefined'不是对象(评估'scope.peopleList.one')
如何使用我的模拟数据进行此测试?
我不认为$ httpBackend就是你在这里所追求的,你想要整个工厂被嘲笑而不依赖于$ http?
看一下$ q ,特别是Testing头下的代码示例。 您的问题可能会使用如下代码解决:
'use strict';
describe('mocking the factory response', function () {
beforeEach(module('myApp.controllers'));
var scope, fakeFactory, controller, q, deferred;
//Prepare the fake factory
beforeEach(function () {
fakeFactory = {
requestPeople: function () {
deferred = q.defer();
// Place the fake return object here
deferred.resolve({ "one": "three" });
return deferred.promise;
}
};
spyOn(fakeFactory, 'requestPeople').andCallThrough();
});
//Inject fake factory into controller
beforeEach(inject(function ($rootScope, $controller, $q) {
scope = $rootScope.$new();
q = $q;
controller = $controller('MyCtrl1', { $scope: scope, MyFactory: fakeFactory });
}));
it('The peopleList object is not defined yet', function () {
// Before $apply is called the promise hasn't resolved
expect(scope.peopleList).not.toBeDefined();
});
it('Applying the scope causes it to be defined', function () {
// This propagates the changes to the models
// This happens itself when you're on a web page, but not in a unit test framework
scope.$apply();
expect(scope.peopleList).toBeDefined();
});
it('Ensure that the method was invoked', function () {
scope.$apply();
expect(fakeFactory.requestPeople).toHaveBeenCalled();
});
it('Check the value returned', function () {
scope.$apply();
expect(scope.peopleList).toBe({ "one": "three" });
});
});
我已经添加了一些关于$ apply的测试,直到我开始玩这个我都不知道!
高格
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