单元测试 angular-bootstrap $modal

Question

我在尝试为 Angular-Bootstrap $modal 编写 jasmine 单元测试时遇到问题。确切的错误是 Expected spy open to have been called with [ { templateUrl : '/n/views/consent.html', controller : 'W2ConsentModal as w2modal', resolve : { employee : Function }, size : 'lg' } ] but actual calls were [ { templateUrl : '/n/views/consent.html', controller : 'W2ConsentModal as w2modal', resolve : { employee : Function }, size : 'lg' } ]

预期和实际的模态选项对象是相同的。怎么回事？

控制器

(function () {
    'use strict';

    angular
        .module('app')
        .controller('W2History', W2History);

    W2History.$inject = ['$scope', '$modal', 'w2Service'];

    function W2History($scope, $modal, w2Service) {
        /* jshint validthis:true */
        var vm = this;
        vm.showModal = showModal;

        function showModal(employee) {
            var modalInstance = $modal.open({
                templateUrl: '/n/views/consent.html',
                controller: 'W2ConsentModal as w2modal',
                resolve: {
                    employee: function () {
                        return employee;
                    }
                },
                size: 'lg'
            });

            modalInstance.result.then(function (didConsent) {
                // code omitted
            });
        }


    }
})();

测试

 describe('W2History controller', function () {
        var controller, scope, modal;

        var fakeModal = {
            result: {
                then: function (confirmCallback, cancelCallback) {
                    //Store the callbacks for later when the user clicks on the OK or Cancel button of the dialog
                    this.confirmCallBack = confirmCallback;
                    this.cancelCallback = cancelCallback;
                }
            },
            close: function (item) {
                //The user clicked OK on the modal dialog, call the stored confirm callback with the selected item
                this.result.confirmCallBack(item);
            },
            dismiss: function (type) {
                //The user clicked cancel on the modal dialog, call the stored cancel callback
                this.result.cancelCallback(type);
            }
        };

        var modalOptions = {
            templateUrl: '/n/views/consent.html',
            controller: 'W2ConsentModal as w2modal',
            resolve: {
                employee: function () {
                    return employee;
                }
            },
            size: 'lg'
        };

        beforeEach(function () {
            module('app');

            inject(function (_$controller_, _$rootScope_, _$modal_) {
                scope = _$rootScope_.$new();                         
                modal = _$modal_;

                spyOn(modal, 'open').and.returnValue(fakeModal);

                controller = _$controller_('W2History', {
                    $scope: scope,
                    $modal: modal,
                    w2Service: w2Srvc
                });

            });

        });

        it('Should correctly show the W2 consent modal', function () {
            var employee = terminatedaccessMocks.getCurrentUserInfo();

            controller.showModal(employee);
            expect(modal.open).toHaveBeenCalledWith(modalOptions);
        });



    });

Answer 1

我不确定现在这是否对您有所帮助，但是当您监视某些内容时，您可以获得传递给 $uibModal.open 间谍的参数，然后您可以调用该函数来测试它是否返回了解决方法。

it('expect resolve to be have metadataid that will return 9999', () => {
            spyOn($uibModal, 'open');
            //add test code here that will call the $uibModal.open
            var spy = <jasmine.Spy>$uibModal.open;
            var args = spy.calls.argsFor(0);
            expect(args[0].resolve.metadataId()).toEqual(9999);
});

*****我的代码使用的是打字稿，但这对我有用。**

Answer 2

我也遇到过同样的情况。我遇到了以下给定解决方案的问题

//Function to open export modal
scope.openExportModal();
expect( uibModal.open ).toHaveBeenCalledWith(options);
expect( uibModal.open.calls.mostRecent().args[0].resolve.modalData() ).toEqual(modalData);

如果您想快速修复，希望这可能会有所帮助。

Answer 3

试试这个：

describe('W2History controller', function () {
        var controller, scope, modal;

        var fakeModal = {
            result: {
                then: function (confirmCallback, cancelCallback) {
                    //Store the callbacks for later when the user clicks on the OK or Cancel button of the dialog
                    this.confirmCallBack = confirmCallback;
                    this.cancelCallback = cancelCallback;
                }
            },
            close: function (item) {
                //The user clicked OK on the modal dialog, call the stored confirm callback with the selected item
                this.result.confirmCallBack(item);
            },
            dismiss: function (type) {
                //The user clicked cancel on the modal dialog, call the stored cancel callback
                this.result.cancelCallback(type);
            }
        };

        var modalOptions = {
            templateUrl: '/n/views/consent.html',
            controller: 'W2ConsentModal as w2modal',
            resolve: {
                employee: jasmine.any(Function)
            },
            size: 'lg'
        };

        var actualOptions;

        beforeEach(function () {
            module('plunker');

            inject(function (_$controller_, _$rootScope_, _$modal_) {
                scope = _$rootScope_.$new();                         
                modal = _$modal_;

                spyOn(modal, 'open').and.callFake(function(options){
                    actualOptions = options;

                    return fakeModal;
                });

                controller = _$controller_('W2History', {
                    $scope: scope,
                    $modal: modal
                });

            });

        });

        it('Should correctly show the W2 consent modal', function () {
            var employee = { name : "test"};

            controller.showModal(employee);
            expect(modal.open).toHaveBeenCalledWith(modalOptions);
            expect(actualOptions.resolve.employee()).toEqual(employee);
        });
    });

PLUNK

解释：

我们不应该期望实际的resolve.employee 与假的resolve.employee 相同，因为resolve.employee 是一个返回员工的函数（在这种情况下，员工在闭包中被捕获）。函数可能相同，但在运行时返回的对象可能不同。

您的测试失败的原因是 javascript 比较函数的方式。看看这个fiddle。无论如何，我不关心这个，因为我们不应该期望函数实现。在这种情况下，我们关心的是 resolve.employee 返回与我们传入的对象相同的对象：

expect(actualOptions.resolve.employee()).toEqual(employee);

所以这里的解决方案是： 除了resolve.employee，我们期待一切：

var modalOptions = {
                templateUrl: '/n/views/consent.html',
                controller: 'W2ConsentModal as w2modal',
                resolve: {
                    employee: jasmine.any(Function) //don't care about the function as we check it separately.
                },
                size: 'lg'
            };

   expect(modal.open).toHaveBeenCalledWith(modalOptions);

先捕获resolve.employee，然后单独检查它：

var actualOptions;

 spyOn(modal, 'open').and.callFake(function(options){
      actualOptions = options; //capture the actual options               
      return fakeModal;
 });

expect(actualOptions.resolve.employee()).toEqual(employee); //Check the returned employee is actually the one we pass in.

Answer 4

这是一个pass by reference vs pass by value 问题。 $modal.open中使用的resolve.employee匿名函数：

var modalInstance = $modal.open({
    templateUrl: '/n/views/consent.html',
    controller: 'W2ConsentModal as w2modal',
    resolve: {
        employee: function () {
            return employee;
        }
    },
    size: 'lg'
});

与您测试中的resolve.employee 匿名函数不相同（通过引用）：

var modalOptions = {
    templateUrl: '/n/views/consent.html',
    controller: 'W2ConsentModal as w2modal',
    resolve: {
        employee: function () {
            return employee;
        }
    },
    size: 'lg'
};

你的测试应该是：

resolve: {
    employee: jasmine.any(Function)
}

如果必须测试 resolve 函数，则应将其公开在可以在测试中获得对同一函数的引用的地方。