Angular Jasmine - 模拟服务（angularjs-rails-resource） - TypeError：对象不是函数

Question

这是带有 angular-rails gem 和 jasmine gem 的 Rails 4.0 应用程序。我也使用 angularjs-rails-resource。

我有简单的控制器：

app.controller('new', function ($scope, Appointment, flash) {

$scope.appointment = new Appointment();
$scope.attachments = [];
$scope.appointment.agendas_attributes = [];

$scope.createAppointment = function(){

    $scope.appointment.attachments = $scope.attachments;

    $scope.appointment.create().then(function(data){
      flash(data.message);
    }, function(error){
      flash('error', error.data.message);
      $scope.appointment.$errors = error.data.errors;
    });

};

在 Jasmine 的单元测试中，我想用 jasmine.createSpyObj 隔离依赖关系：

describe("Appointment new controller",function() {
var $scope, controller, mockAppointment, mockFlash, newCtrl;


beforeEach(function() {

    module("appointments");

    inject(function(_$rootScope_, $controller) {
      $scope = _$rootScope_.$new();

      $controller("new", {
        $scope: $scope,
        Appointment: jasmine.createSpyObj("Appointment", ["create"])
      });

    });

  });
});

但我得到一个错误：

TypeError: object is not a function

上线：

Appointment: jasmine.createSpyObj("Appointment", ["create"])

有人可以帮忙吗？ :-)

Answer 1

我相信错误是在这一行引发的：

$scope.appointment = new Appointment();

Appointment 是一个对象字面量，而不是一个函数，所以本质上你是在尝试这样做：

var x = {create: function(){}};
var y = new x();

但你似乎想做的是：

var x = function(){return  {create: function(){}}};
var y = new x();

所以让你的模拟像这样：

Appointment: function() {
    return jasmine.createSpyObj("Appointment", ["create"])
}

Answer 2

我看到有人打败了我的答案；）

我有一个建议可以让你的描述块看起来更干净 模块和注入语句可以嵌套在 beforeEach 定义中：

describe("Appointment new controller", function () {
    var $scope, controller, mockAppointment, mockFlash, newCtrl;

    beforeEach(module("appointments"));
    beforeEach(inject(function (_$rootScope_, $controller) {
        $scope = _$rootScope_.$new();
        $controller("new", {
            $scope: $scope,
            Appointment: function () {
                return jasmine.createSpyObj("Appointment", ["create"])
            }
        });
    }));
}