dgorodnichy

# frozen_string_literal: true

require 'bundler/inline'

gemfile(true) do
  source 'https://rubygems.org'

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem 'rails', '= 6.0.0'

dgorodnichy

class Posts
  cattr_accessor :source

  def initialize
    @client = source.new
  end

  def posts(args)
    @client.user_posts(args)
  end

dgorodnichy

posts = Posts.new
posts.source = PostsSources::FakeMedium
posts.user_posts

dgorodnichy

class Medium
  cattr_accessor :source
  
  def initialize(name = nil)
    @client = source.new(name)
  end
  
  def posts
    @client.user_posts
  end

dgorodnichy

module PostsSource
  class Remote
    def initialize(username)
      @client = MediumAPI.new(username)
    end
    
    def user_posts
      @client.posts
    end
  end

dgorodnichy

module PostsSource
  class Fake
    def initialize(username)
      @client = OpenStruct.new(
        posts: [
          {
            title: 'Signal v Noise exits Medium[Fake source]',
            ...
          }
        ]

dgorodnichy

# frozen_string_literal: true

require 'posts_source/remote'
require 'medium/testing'

Medium::Testing.fake! if Rails.env.test?

dgorodnichy

require 'posts_source/fake'

class Medium::Testing
  def self.fake!
    Medium.source = PostsSource::Fake
  end
end

dgorodnichy

posts = Medium.new('dhh')
posts.source = PostsSource::Remote
posts.user_posts

dgorodnichy

posts = Medium.new
posts.source = PostsSource::Fake
posts.user_posts