控制器

Question

我似乎无法弄清楚如何获得＆＃34; - 生成POD返回PDF文件＆＃39;规格。 Jasmine在任何返回之前超时，所以我无法测试。当我拿出完成回调函数然后测试运行正常但我怀疑它是误报。

控制器

(function() {
    'use strict';
        angular
            .module('app.controllers')
            .controller('podController', podController);

        podController.$inject = ['podService','$window'];

        function podController(podService,$window) {
            var vm = this;

            vm.generatePOD = generatePOD;
            vm.downloadPDF = downloadPDF;
            vm.openPDF = openPDF;

            /////////////

            function downloadPDF(willCallId){
                var fileName = 'pod-' + willCallId;
                generatePODFile(willCallId).then(function(file){
                    openPDF(file,fileName);
                });
            }

            function generatePOD(willCallId) {
                return podService.getPOD(willCallId).then(function(data){
                    var byteCharacters = atob(data);
                    var byteNumbers = new Array(byteCharacters.length);
                    for (var i = 0; i < byteCharacters.length; i++) {
                        byteNumbers[i] = byteCharacters.charCodeAt(i);
                    }
                    var byteArray = new Uint8Array(byteNumbers);
                    var file = new Blob([byteArray], {type: 'application/pdf'});
                    return file;
                });
            }

            function openPDF(file,fileName){
                var fileURL = $window.URL.createObjectURL(file);
                $window.open(fileURL,fileName);
            }
        }
})();

服务

    (function() {
    'use strict';
        angular
            .module('app.services')
            .service('podService', podService);

        podService.$inject = ['IEHRestangular'];

        function podService(IEHRestangular) {

                var service = {
                    getPOD: getPOD
                };

                return service;

                ///////////////////////

                function getPOD(willCallId) {
                    return IEHRestangular.one('/ClientEventNotification/api/POD/').customGET('GetPOD', {'willcallid': willCallId},{responseType: 'arraybuffer'}).then(function (data) {
                        return data;
                    });
                }
            }

})();

控制器测试套件

describe('POD Controller Test', function () {
    beforeEach(module('app'));

    beforeEach(module(function($urlRouterProvider) {
        $urlRouterProvider.deferIntercept();
    }));


    var $controller,$window,podService,$q,vm,deferred;

    beforeEach(inject(function (_$controller_,$window,_podService_,$q,$timeout){
        deferred = $q.defer();
        $controller = _$controller_;
        $window = $window;
        $timeout = $timeout;
        podservice = _podService_;
        $q = $q;
        vm = $controller('podController', {'$window': $window, podservice:podService});
    }));


    it(' - Generate POD returns a PDF File', function (done) {
        var willcallid = 3265987;
        deferred.resolve('resolveData');
        spyOn(podservice, 'getPOD').and.returnValues(deferred.promise);
        vm.generatePOD(willcallid).then(function(data){
            expect(data).toBe((data instanceof Blob));
            expect(podservice.getPOD).toHaveBeenCalledWith(willcallid);
done();
        });
    });

    it(' - Opens a window displaying a PDF File', inject( function( $window ) {
        spyOn( $window, 'open' ).and.callFake( function() {
            return true;
        } );
        var byteArray = new Uint8Array(1024);
        var file = new Blob([byteArray], {type: 'application/pdf'});
        vm.openPDF(file,'testFile');
        expect( $window.open ).toHaveBeenCalled();
    } ) );

});

Answer 1

使用ngMock时，许多服务被可以以同步方式控制的版本替换，以便在测试期间更好地控制流。这意味着在许多情况下您不需要使用Jasmine done回调。

知道承诺与摘要周期相关也很重要，这意味着承诺的then，catch和finally回调仅在摘要运行后执行。

您不需要进行太多更改：

it(' - Generate POD returns a PDF File', function() {

  var willcallid = 3265987;

  spyOn(podservice, 'getPOD').and.returnValue(deferred.promise);

  vm.generatePOD(willcallid).then(function (data) {

    expect(podservice.getPOD).toHaveBeenCalledWith(willcallid);
    expect(data instanceof Blob).toBe(true);
  });

  deferred.resolve('resolveData');

  // Trigger the digest loop and resolution of promise callbacks
  $rootScope.$digest();
});

在您的示例中删除done回调时发生的事情是规范将在没有任何等待的情况下运行，但是promise回调函数永远不会被执行，期望永远不会被执行并且测试将通过（因为在承诺回调之外没有exepcts）。