Question

我使用AngularJS，Karma，Mocha，Chai，Chai-as-promise，Sinon。
我正在尝试下面的控制器。我无法模拟服务User并测试控制器中的.then（）部分。

控制器代码

.controller('SignupPhoneCtrl', function(User, $scope) {
  $scope.sendPhoneNumber = function(countryCode, phoneNumber){
    User.sendPhoneNumber(countryCode, phoneNumber)
    .then(function(result){
      if(result == "success"){
        //I WANT TO TEST THIS SECTION
        return "success";
      }
        //I WANT TO TEST THIS SECTION
      return "fail";
    });
  }
})

ControllerTest代码

describe('Controller: Signup-phone', function() {
  var scope;
  var UserMock;
  var SignupPhoneCtrl;

  beforeEach(function() {
    module('starter.controllers');
  });

  beforeEach(inject(function($rootScope, $controller, $q){
    scope = $rootScope.$new();
    UserMock = {
      sendPhoneNumber: function(countryCode, phoneNumber){
        var deferred = $q.defer();
        // console.log("called"); //This part is being called
        deferred.resolve('foo');
        return deferred.promise;
      }
    };
    SignupPhoneCtrl = $controller("SignupPhoneCtrl", {$scope: scope, User: UserMock});
  }))

  it('should return asdf', function(){
    scope.$digest();

    //WHAT SHOULD I WRITE HERE?

  })
});

我已经尝试过以下但是没有调用断言部分。

scope.sendPhoneNumber(12, 53452123).then(function(result){
  result.should.equal("fail");  //THIS SECTION IS NOT CALLED
})

我已尝试过以下内容，但它会出错：＆＃39; undefined＆＃39;不是一个功能（评估＆＃39; promise.then.bind（承诺）＆＃39;

scope.sendPhoneNumber(12, 53452123).should.eventually.equal("fail");

sendPhoneNumber(12, 53452123)返回Object{$$state: Object{status: 0}}

我尝试添加sinon.spy(UserMock, 'sendPhoneNumber')，但没有区别。

Answer 1

问题是，$scope.sendPhoneNumber没有返回任何内容。试试

return User.sendPhoneNumber(...

在控制器方法中。

另外，如果您只是想立即解决模拟中的承诺，我发现这很有效并且可以节省您设置延迟对象

UserMock = {
  sendPhoneNumber: function(countryCode, phoneNumber){
    return $q.when('foo');
  }
};

话虽如此，您可能希望能够控制每个测试中的已解析值，这样更有意义......

var scope;
var UserMock;
var SignupPhoneCtrl;
var deferred;

// snip

inject(function($rootScope, $controller, $q) {
    deferred = $q.defer();
    UserMock = {
        sendPhoneNumber: function() {
            return deferred.promise;
        }
    };
});

// snip

it('tests for success', inject(function($rootScope) {
    deferred.resolve('success');

    scope.sendPhoneNumber(...).then(...);

    $rootScope.$apply();
}));

it('tests for failure', inject(function($rootScope) {
    deferred.resolve('not success');

    scope.sendPhoneNumber(...).then(...);

    $rootScope.$apply();
}));

AngularJS，Mocha，Karma。测试控制器，模拟服务承诺

1 个答案: