AngularJS和PouchDB服务的单元测试 [英] Unit Testing AngularJS and PouchDB Service

问题描述

我正在尝试对单个Angular工厂进行单元测试，但是很难正确地模拟和注入PouchDB对象.我的工厂代码当前如下:

I am attempting to unit test my individual Angular factories but am having a hard time trying to correctly mock and inject the PouchDB object. My factory code is currently as follows:

factory('Track', [function() {
    var db = new PouchDB('tracks');
    var resource = {
        getAll: function() {
          return db.allDocs({include_docs: true});
        }
    return resource;
}]);

我曾经尝试使用Angular的$ provide服务注入一个没有运气的模拟PouchDB实例:

I had tried to use Angular's $provide service to inject a mock PouchDB instance with no luck:

 module(function($provide) {
    $provide.value('PouchDB', {
        allDocs: function() {
            return 'MOCKED';
        }
    });

我不确定从这儿去哪里.任何帮助将不胜感激！

I am not entirely sure where to go from here. Any help would be greatly appreciated!

推荐答案

如评论中所述: 您必须将全局变量PouchDB包装在服务中以使其可注入.这是由于Angular通过简单的函数参数执行DI.因此，只需执行以下操作即可:

As just stated in the comments: you have to wrap the global variable PouchDB inside a service to make it injectable. This is due to Angular doing DI via simple function-parameters. So just do something like:

  angular.module('myModule')
     .factory('PouchDBWrapper', function(){
         return PouchDB;
     }

然后您可以将其注入Track工厂:

Then you can inject it into your Track factory:

 factory('Track', [function(PouchDBWrapper) {
   var db = new PouchDBWrapper('tracks');
   var resource = {
      getAll: function() {
         return db.allDocs({include_docs: true});
      }
    return resource;
}]);

在测试中，您可以通过以下方式对其进行模拟:

and in your test you can mock it by:

module(function($provide) {
   $provide.factory('PouchDBWrapper', {
       allDocs: function() {
           return 'MOCKED';
       }
});

这篇关于AngularJS和PouchDB服务的单元测试的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！