$ httpBackend在AngularJs茉莉花单元测试 [英] $httpBackend in AngularJs Jasmine unit test

问题描述

我无法让我的单元测试正常工作。我有开始是空的一个$范围数组，但应该充满了$ http.get（）。在现实环境中，会是阵列中的约15个左右的物体，但对于我的单元测试我只是抓住2.对于单元测试，我有：

I'm unable to get my unit test to work properly. I have a $scope array that starts out empty, but should be filled with an $http.get(). In the real environment, there'd be approx 15 or so objects in the array, but for my unit test I just grabbed 2. For the unit test, I have:

expect($scope.stuff.length).toBe(2);

但茉莉的错误是：预期0为2

But jasmine's error is: Expected 0 to be 2.

这是我的controller.js：

here's my controller.js:

$scope.stuff = [];
$scope.getStuff = function () {
    var url = site.root + 'api/stuff';
    $http.get(url)
        .success(function (data) {
            $scope.stuff = data;
        })
        .error(function(error) {
            console.log(error);
        });
};

和我controller.spec.js是：

and my controller.spec.js is:

/// <reference path="../../../scripts/angular-loader.min.js" />
/// <reference path="../../../scripts/angular.min.js" />
/// <reference path="../../../scripts/angular-mocks.js" />
/// <reference path="../../../scripts/angular-resource.js" />
/// <reference path="../../../scripts/controller.js" />
beforeEach(module('ui.router'));
beforeEach(module('ngResource'));
beforeEach(module('ngMockE2E'));
beforeEach(module('myApplication'));
var $scope;
var controller;
var httpLocalBackend;

beforeEach(inject(function ($rootScope, $controller, $injector) {
    $scope = $rootScope.$new();
    controller = $controller("StuffController", {
        $scope: $scope
    });
}));

beforeEach(inject(function ($httpBackend) {
    httpLocalBackend = $httpBackend;
}));

it('should get stuff', function () {
    var url = '/api/stuff';
    var httpResponse = [{ "stuffId": 1 }, { "stuffId": 2 }];
    httpLocalBackend.expectGET(url).respond(200, httpResponse);
    $scope.getStuff();
    expect($scope.stuff.length).toBe(2);
    //httpLocalBackend.flush();
} );

现在，很明显，我改变变量名和这样的，因为这是工作，但希望这是足够的信息，任何人帮助我​​。如果需要，我可以提供更多。在取消对.flush（）线的时候我也获得了第二个错误，但我会去的晚了一点。

Now, obviously, I changed variable names and such since this is for work, but hopefully this is enough information for anybody to help me. I can provide more if needed. I also get a second error when uncommenting the .flush() line, but I'll get to that a bit later.

任何帮助是极大AP preciated并在此先感谢！

Any help is greatly appreciated and thanks in advance!

编辑：

终于得到了它的工作！这是我的最后code：

Finally got it working! Here's my final code:

it('should get stuff', function () {
    var url = '/api/stuff';
    var httpResponse = [{ "stuffId": 1 }, { "stuffId": 2 }];
    httpLocalBackend.expectGET(url).respond(200, httpResponse);
    $scope.getStuff();
    httpLocalBackend.flush();
    expect($scope.stuff.length).toBe(2);
} );

编辑2：
我遇到了另一个问题，我想可能是这样做的根本原因。见<一href=\"http://stackoverflow.com/questions/25794501/unit-test-failing-when-function-called-on-startup\">Unit试验失败时，呼吁启动功能

推荐答案

您需要将httpLocalBackend.flush（）语句之前预期（$ scope.stuff.length）.toBe（2）。一旦你的要求，你需要刷新它的数据在客户端code可用。

You need to place httpLocalBackend.flush() statement before expect($scope.stuff.length).toBe(2). Once you make a request you need to flush it for the data to be available in your client code.

it('should get stuff', function () {
    var url = '/api/roles';
    var httpResponse = [{ "stuffId": 1 }, { "stuffId": 2 }];
    scope.getStuff(); //Just moved this from after expectGET
    httpLocalBackend.expectGET(url).respond(200, httpResponse);
    httpLocalBackend.flush();
    expect($scope.stuff.length).toBe(2);
} );

试试这个。

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