我无法让我的单元测试正常工作。我有一个$ scope数组,它开始是空的,但应该用$ http.get()填充。在真实环境中,阵列中大约有15个左右的对象,但是对于我的单元测试,我只抓了2.对于单元测试,我有:
expect($scope.stuff.length).toBe(2);
但茉莉花的错误是:预期0为2。
这是我的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);
});
};
我的controller.spec.js是:
/// <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,我更改了变量名称,因为这是为了工作,但希望这对任何人都有足够的信息来帮助我。如果需要,我可以提供更多。取消注释.flush()行时,我也会遇到第二个错误,但稍后我会稍等。
非常感谢任何帮助,并提前致谢!
编辑:
终于搞定了!这是我的最终代码:
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,我认为可能是这个问题的根本原因。见Unit test failing when function called on startup
答案 0 :(得分:7)
您需要在expect($ scope.stuff.length).toBe(2)之前放置httpLocalBackend.flush()语句。一旦您提出请求,您需要刷新它以使数据在您的客户端代码中可用。
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。