javascript - Jasmine 回归被 mock 工厂的 promise 被拒绝

Question

我的 Controller 的初始化:

    var init = function () {
        httpUsers.getUsers().then(function (data) {
            $timeout(function() {
                // Do something...
            });
        }).catch(function (error) {
            vm.error = "Me!";
            toastr.error(error);
        });
    }

我的模拟服务:

beforeEach(function() {
    module('httpService', function($provide) {
        $provide.factory('httpUsers', function () {

            var service = {
                getUsers: getUsers
            }

            function getUsers() {
                    deferred = $q.defer(); // deferred is a global variable
                    deferred.resolve([
                        { id: 1, firstName: "John", lastName: "Doe" },
                        { id: 2, firstName: "Jane", lastName: "Doe" },
                        { id: 3, firstName: "Jack", lastName: "Doe" }
                    ]);
                    return deferred.promise;
            };

            return service;
        });
    });
});

返回已解决的 promise 一切正常。

但是，我想测试 Controller init 函数中的 catch 子句。

我已经尝试过这个:

describe('init', function() {
    it('should throw error', function () {
        deferred.reject('testing');
        expect(controller.error).toBe("Error!");  // NOTE: 'vm' is set to 'this', so controller is 'vm'
    });
});

但我得到的是:

预期未定义为“错误!”。

我没有收到“测试”、“我!”或“错误!”。如何强制拒绝测试中的 promise ？

谢谢!

编辑
这是我的 Controller 注入(inject):

beforeEach(inject(function(_$controller_, _$rootScope_, _$q_, _$timeout_, _global_) {

    $rootScope = _$rootScope_;
    $scope = _$rootScope_.$new();
    $q = _$q_;
    $timeout = _$timeout_;
    global = _global_;

    controller = _$controller_('usersController', {
        $rootScope: $rootScope,
        $scope: $scope,
        $q: $q
    });

    $timeout.flush();
}));

Answer 1

如下所示:- 您的模拟服务

beforeEach(function() {
    module('httpService', function($provide) {
        $provide.factory('httpUsers', function () {

            var service = {
                getUsers: getUsers
            }

            function getUsers() {
                deferred = $q.defer(); // deferred is a global variable
                return deferred.promise;
            };

            return service;
        });
    });
});

你的拒绝测试

describe('init', function() {
    it('should throw error', function () {
        deferred.reject('testing');
        $scope.$apply();
        expect(controller.error).toBe("Error!"); 
    });
});

你的决心测试

describe('init', function() {
    it('should throw error', function () {
        deferred.resolve([
                    { id: 1, firstName: "John", lastName: "Doe" },
                    { id: 2, firstName: "Jane", lastName: "Doe" },
                    { id: 3, firstName: "Jack", lastName: "Doe" }
                ]);
        $scope.$apply();
        $timeout.flush();
        expect(controller.error).toBe("Error!"); 
    });
});