Angular资源测试:$httpBackend.flush()导致意外请求

Angular resource testing: $httpBackend.flush() cause Unexpected request

本文关键字：意外 请求 flush 测试 资源 httpBackend Angular      更新时间：2023-09-26

我想测试一下angularjs的资源。

'use strict';
/**
 * AddressService provides functionality to use address resource in easy way.
 *
 * This is an example usage of method:
 *
 * `get`:
 *
     var a = AddressService.get({id: '1'},
         function (data) {
            // Work here with your resource
         }
     );
 *
 */
App.factory('AddressService', function ($resource, $rootScope) {
    var url = [
            $rootScope.GLOBALS.API_PATH,
            $rootScope.GLOBALS.API_VERSION,
            'models/address/:id'
        ].join('/'),
        actions = {
            'get': {
                method: 'GET',
                params: {id: '@id'}
            }
        };
    return $resource(url, {}, actions);
});
我创建了测试: 
'use strict';
var $httpBackend;
describe('Service: AddressService', function () {
    beforeEach(module('myApp'));
    beforeEach(inject(function ($injector) {
        var url_get = 'api/v1/models/address/5';
        var response_get = {
            address_line_1: '8 Austin House Netly Road',
            address_line_2: 'Ilford IR2 7ND'
        };
        $httpBackend = $injector.get('$httpBackend');
        $httpBackend.whenGET(url_get).respond(response_get);
    }));
    describe('AddressService get test', function () {
        it('Tests get address', inject(function (AddressService) {
            var address = AddressService.get({ id: '5'});
            $httpBackend.flush();
            expect(address.address_line_1).toEqual('8 Austin House Netly Road');
            expect(address.address_line_2).toEqual('Ilford IR2 7ND');
        }));
    });
});

我对角不是很有经验。我已经在karma.config.js中设置了jasmine。AngularJS v1.0.6Yoeman和Grunt管理项目。

I try grunt test 

Running "karma:unit" (karma) task
INFO [karma]: Karma server started at http://localhost:8080/
INFO [launcher]: Starting browser Chrome
INFO [Chrome 27.0 (Linux)]: Connected on socket id RFFUY5bW8Hb5eTu0n-8L
Chrome 27.0 (Linux) Service: AddressService AddressService get Tests get address FAILED
        Error: Unexpected request: GET views/home.html
        No more request expected
            at Error (<anonymous>)
            at $httpBackend (/home/bart/y/projects/x/frontend/app/components/angular-mocks/angular-mocks.js:910:9)
            at sendReq (/home/bart/y/projects/x/frontend/app/components/angular/angular.js:9087:9)
            at $http (/home/bart/y/projects/x/frontend/app/components/angular/angular.js:8878:17)
            at Function.$http.(anonymous function) [as get] (/home/bart/y/projects/x/frontend/app/components/angular/angular.js:9021:18)
            at $q.when.then.then.next.locals (/home/bart/y/projects/x/frontend/app/components/angular/angular.js:7394:34)
            at wrappedCallback (/home/bart/y/projects/x/frontend/app/components/angular/angular.js:6797:59)
            at wrappedCallback (/home/bart/y/projects/x/frontend/app/components/angular/angular.js:6797:59)
            at /home/bart/y/projects/x/frontend/app/components/angular/angular.js:6834:26
            at Object.Scope.$eval (/home/bart/y/projects/x/frontend/app/components/angular/angular.js:8011:28)
        Error: Declaration Location
            at window.jasmine.window.inject.angular.mock.inject (/home/bart/y/projects/x/frontend/app/components/angular-mocks/angular-mocks.js:1744:25)
            at null.<anonymous> (/home/bart/y/projects/x/frontend/test/spec/services/userdata/AddressService.js:32:30)
            at null.<anonymous> (/home/bart/y/projects/x/frontend/test/spec/services/userdata/AddressService.js:31:5)
            at /home/bart/y/projects/x/frontend/test/spec/services/userdata/AddressService.js:5:1
..................................................................
Chrome 27.0 (Linux): Executed 67 of 67 (1 FAILED) (0.343 secs / 0.179 secs)
Warning: Task "karma:unit" failed. Use --force to continue.

如果我在测试中移除$httpBackend.flush()。测试通过。但是我从address得到了undefined。我看到的例子:例子都使用flush()，但只有我得到愚蠢的例外:Error: Unexpected request: GET views/home.html

views/home.html是我在项目目录下的视图。我不知道如何解决我的问题，我找不到任何解决办法。我是不是没说到重点?

有人能看出我的代码中的错误吗?如有任何建议，我们将不胜感激。

编辑

我发现我需要使用这个:

$httpBackend.when('GET', /'.html$/).passThrough();

但另一个问题是我得到:

TypeError: Object #<Object> has no method 'passThrough'

这个错误是由你的测试试图加载你的应用程序的主页引起的。因为你没有告诉测试期望这个服务器调用，返回一个错误。关于这一点的说明，请参阅$httpBackend的文档。

你的$templateCache解决方案是为单元测试指令设计的，而不是其他任何东西。你很接近:

$httpBackend.when('GET', /'.html$/).passThrough();

由于您不需要对实际的模板文件做任何操作，因此将其添加到beforeEach()块中是一种安全而简单的方法。

$httpBackend.whenGET(/'.html$/).respond('');

这将阻止你得到你所拥有的TypeError。

TypeError: Object #<Object> has no method 'passThrough'

在升级到新版本的Angular JS后，我在单元测试中也遇到了同样的问题，使用respond('')工作得很好。

我终于找到解决办法了:

我试图遵循这个:其他帖子

所以我添加了$templateCache: 

'use strict';
var $httpBackend;
describe('Service: AddressService', function () {
    beforeEach(module('myApp'));
    beforeEach(inject(function ($injector, $templateChache) {
        $templateCache.put('views/home.html', '.<template-goes-here />');
        var url_get = 'api/v1/models/address/5';
        var response_get = {
            address_line_1: '8 Austin House Netly Road',
            address_line_2: 'Ilford IR2 7ND'
        };
        $httpBackend = $injector.get('$httpBackend');
        $httpBackend.whenGET(url_get).respond(response_get);
    }));
    describe('AddressService get test', function () {
        it('Tests get address', inject(function (AddressService) {
            var address = AddressService.get({ id: '5'});
            $httpBackend.flush();
            expect(address.address_line_1).toEqual('8 Austin House Netly Road');
            expect(address.address_line_2).toEqual('Ilford IR2 7ND');
        }));
    });
});
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