测试使用ActiveRecord模型的gem [英] Testing a gem that uses ActiveRecord models

问题描述

我写了一个gem，如果您传入ActiveRecord模型，它将数据导入数据库。例如：

I wrote a gem that imports data into your database if you pass in an ActiveRecord model. For example:

importer = Importer.new(Widget)
importer.import(data_source)

是否有测试此gem的好方法？我将以某种方式需要连接到测试数据库并创建测试模型。谢谢！

Is there a good way to test this gem? I would somehow need to connect to a test database and create a test model. Thanks!

推荐答案

此帖子的主要启发是：
http://blog.markstarkman.com/blog/2013/01/23/using -sqlite-to-test-active-record-models /

Mostly inspired from this post: http://blog.markstarkman.com/blog/2013/01/23/using-sqlite-to-test-active-record-models/

首先，在您的gemspec中，可以将ActiveRecord和sqlite3添加为依赖项，如下所示：

First, in your gemspec, you can add ActiveRecord and sqlite3 as dependencies like so:

spec.add_development_dependency "activerecord", "~> 4.0.0"
spec.add_development_dependency "sqlite3"

然后在spec / schema.rb中，您可以这样定义模式：

Then in spec/schema.rb, you can define your schema like so:

ActiveRecord::Schema.define do
  self.verbose = false

  create_table :users, :force => true do |t|
    t.string :key
    t.string :name
    t.integer :age
    t.datetime :dob

    t.timestamps
  end

end

然后您可以在模型中创建模型。 rb文件：

Then you can create your models in a models.rb file:

class User < ActiveRecord::Base
end

在您的spec_helper.rb中，您想连接到内存中的sqlite数据库，加载架构并需要模型：

In your spec_helper.rb, you want to connect to an in-memory sqlite database, load the schema, and require the models:

require 'active_record'

ActiveRecord::Base.establish_connection adapter: "sqlite3", database: ":memory:"

load File.dirname(__FILE__) + '/schema.rb'
require File.dirname(__FILE__) + '/models.rb'

这篇关于测试使用ActiveRecord模型的gem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！