Question

在我的测试中模拟/监视API调用时，我在运行Jasmine测试时遇到上述错误。以下是调用API的代码：

UploadedReleasesController.$inject = ['$log', '$scope', '$filter', '$modal', 'ReleaseService', 'TrackService', 'APP_CONFIG', 'DeliveriesService'];
function UploadedReleasesController ($log, $scope, $filter, $modal, releaseService, trackService, APP_CONFIG, deliveriesService){
.
. 
.
releaseService.releases(vm.currentWorkspace).then(function (responseValues) {
            vm.albums = responseValues;
            if(vm.albums.length !== 0){
                vm.selected.album = vm.albums[0];

其中releaseService是我定义的服务，而releases是我想要监视的方法之一。它需要一个字符串参数，比如说'HIGH'。这是我的测试文件，我想模拟该调用：

describe('app module', function() {
    var vm, scope, modalInstance, releaseService, trackService, deliveriesService;

    beforeEach(module('app.uploadedReleases'));     // Main module name

    beforeEach(module('app.config'));       
    beforeEach(module('auth'));             

    beforeEach(function() {
        var mockReleasesData = {
            "test" : 100
            }
        };

        releaseService = jasmine.createSpyObj("releaseService", ["releases"]);
        releaseService.releases('HIGH').and.returnValue(mockReleasesData);
    });


    beforeEach(inject(function($controller, $log, $rootScope, $filter, APP_CONFIG) {

        scope = $rootScope.$new();

        modalInstance = {
            close: jasmine.createSpy('modalInstance.close'),
            open: jasmine.createSpy('modalInstance.open'),
            dismiss: jasmine.createSpy('modalInstance.dismiss'),
            result: {
                then: jasmine.createSpy('modalInstance.result.then')
            }
        };

        vm = $controller('UploadedReleasesController', {'APP_CONFIG':APP_CONFIG, '$log':$log, '$scope':scope, '$filter':$filter, '$modal':modalInstance,
            'ReleaseService':releaseService, 'TrackService':trackService, 'DeliveriesService':deliveriesService});

    }));

运行测试后，我收到错误：

TypeError：'undefined'不是对象（评估'releaseService.releases（'HIGH'）。和'）在test-release.controller.spec.js：93 TypeError：'undefined'不是对象（评估'releaseService.releases（vm.currentWorkspace）.then'）未定义

以下是来自release.service.js

的实际releaseService

releaseService.releases = getReleases;
 .
 .
 .
function getReleases(workspace){
        var releases = [];
        headers.Workspace = workspace;  // set the workspace
        var deferred = $q.defer();
       // Then make $http calls and return a promise
  .
  .

Answer 1

我看到一些可能存在问题的事情：

调用release方法：

releaseService.releases('HIGH').and.returnValue(mockReleasesData);

releases方法，如果应该在这里设置返回值，那么我认为语法可能是：

releaseService.releases.and.returnValue(mockReleasesData);

然后你可以使用正确的数据在releases上断言。

以上解决后。 mockReleaseData没有then方法。由于它将从releases退回，因此将调用then方法：

releaseService.releases(vm.currentWorkspace).then(function (responseValues)

   var mockReleasesData = {
        "test" : 100
        },
        then: function(callbackFn) {  
          // could call callbackFn with fake responseValues
        }
    };

测试的目的是什么？是运用then匿名函数吗？通过少量重组来暴露您的逻辑，测试可能是微不足道的。

function handleResponseValues(vm, responseValues) {
            vm.albums = responseValues;
            if(vm.albums.length !== 0){
                vm.selected.album = vm.albums[0];
}

这仍然需要then回调调用handleResponseValues并引用vm和responseValues，但会公开所有与承诺链无关的逻辑。< / p>

AngularJS TypeError：'undefined'不是对象'Jasmine测试

1 个答案: