[英]Testing angular service that is also a promise
I'm working with browserify
to bundle up an angular service. 我正在使用
browserify
捆绑一个角度服务。 I'm using jasmine
to write tests for this service, which is defined like: 我正在使用
jasmine
为这项服务编写测试,其定义如下:
angular
.module('Client', [])
.factory('client', ['url', 'otherService', '$http', '$log', client])
function client (url, otherService, $http, $log) {
$log.debug('Creating for url %s', url)
var apiRootPromise = $http.get(url).then(function (apiRoot) {
$log.debug('Got api root %j', apiRoot)
return otherService.stuff(apiRoot.data)
})
return Object.assign(apiRootPromise, otherService)
}
The following test suite: 以下测试套件:
describe('test client', function () {
beforeEach(function () {
angular.mock.module('Client')
angular.mock.module(function ($provide) {
$provide.value('url', 'http://localhost:8080/')
})
})
it('should connect at startup', angular.mock.inject(function (client, $rootScope, $httpBackend) {
$rootScope.$apply()
$httpBackend.flush()
expect(client).toBeDefined()
}))
})
Throws a TypeError: undefined is not a constructor
on (evaluating Object.assign(apiRootPromise, otherService)')
. 引发
TypeError: undefined is not a constructor
(evaluating Object.assign(apiRootPromise, otherService)')
。 I'm not sure what's happening here, but my best guess is Angular is not injecting properly the dependent service or not returning the $http
promise. 我不确定这里发生了什么,但我最好的猜测是Angular没有正确地注入依赖服务或者没有返回
$http
承诺。
Possible duplicate question 可能重复的问题
Object.assign
is introduced in ECMAScript 6th edition and is not currently natively supported in all browsers. Object.assign
在ECMAScript第6版中引入,目前在所有浏览器中都不受支持。 Try using a polyfill for Object.assign
. 尝试将polyfill用于
Object.assign
。 Here's one: 这是一个:
if (typeof Object.assign != 'function') {
(function () {
Object.assign = function (target) {
'use strict';
if (target === undefined || target === null) {
throw new TypeError('Cannot convert undefined or null to object');
}
var output = Object(target);
for (var index = 1; index < arguments.length; index++) {
var source = arguments[index];
if (source !== undefined && source !== null) {
for (var nextKey in source) {
if (source.hasOwnProperty(nextKey)) {
output[nextKey] = source[nextKey];
}
}
}
}
return output;
};
})();
}
Otherwise, your code is working in this fiddle (I had to fill in a few blanks, but the general gist is there) 否则,你的代码正在这个小提琴中工作 (我必须填写一些空白,但一般的要点就在那里)
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