在下面的SampleController中，如何对postAttributes函数调用sampleService.updateMethod进行单元测试。自从updateMethod返回Promise以来，我遇到了麻烦。
angular.module('sampleModule')
.controller('SampleController', SampleController);
SampleController.$inject =['sampleService'];
function SampleController(sampleService){
this.postAttributes = function() {
sampleService.updateMethod(number,attributes)
.then(function(response){
//do something on successful update
},function(response){
//do something on unsuccessful update
});
};
}
这是我所拥有的工厂服务：
angular.module('sampleModule')
.factory('sampleService', sampleService);
sampleService.$inject = ['$http'];
function sampleService($http) {
return {
getMethod: function(acctNumber){
return $http({
method: 'GET',
url: //api endpoint
});
},
updateMethod: function(number, attributes){
return $http({
method: 'PUT',
url: //api endpoint,
data: //payload
});
}
};
}
我想在控制器规范中模拟工厂服务，而不是将实际服务直接注入$ controller，因为大多数单元测试指南都指定要在隔离下测试单元。
样例控制器规格：
describe('SampleController Test', function(){
var $controller;
var service;
beforeEach(angular.mock.module('sampleModule'));
beforeEach(angular.mock.inject(function(_$controller_){
$controller = _$controller_;
}));
it('Testing $scope variable', function(){
var sampleController = $controller('SampleController', {
sampleService: service, //mocked factory service
});
sampleController.postAttributes(); //calling the function first
//here I would like to make an assertion to check if
//sampleService.updateMethod has been called with certain parameters
//how do I do that??
});
});
谷歌搜索并找到了一种模拟工厂服务的解决方案，并遵循了像@TehBeardedOne这样的承诺创建方法，并使其从模拟服务中返回。
describe('SampleController', function(){
var mockService, controller, deferred, $rootScope;
beforeEach(function(){
angular.mock.module('sampleModule');
angular.mock.module(function($provide){
$provide.factory('sampleService', function($q){
function updateMethod(acct, attr){
deferred = $q.defer();
return deferred.promise;
}
return{updateMethod: updateMethod};
});
});
angular.mock.inject(function($controller, sampleService, _$rootScope_){
$rootScope = _$rootScope_;
mockService = sampleService;
spyOn(mockService, 'updateMethod').and.callThrough();
controller =$controller('SampleController', {
sampleService: mockService,
})
});
});
it('postAttributes function should call updateMethod', function(){
controller.postAttributes();
expect(mockService.updateMethod).toHaveBeenCalled();
expect(mockService.updateMethod).toHaveBeenCalledWith(controller.accountNumber, controller.attributes);
});
it('postAttributes success block', function(){
controller.postAttributes();
var res = {
data: '2323'
}
deferred.resolve(res);
$rootScope.$digest();
expect(//something in success block).toBe(something);
});
it('postAttributes failure block', function(){
controller.postAttributes();
var res = {
data: '9898'
}
deferred.reject(res);
$rootScope.$digest();
expect(controller.lame).toBe('dont type shit');
});
});
我嘲笑sampleService与$提供商的服务并取得updateMethod返回使用一个承诺$ Q。稍后，您可以解决或拒绝诺言，并逐个测试成功和失败的障碍。
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