与法拉第和Rspec结账

Question

我有一个看起来像这样的模型:

class Gist
    def self.create(options)
    post_response = Faraday.post do |request|
      request.url 'https://api.github.com/gists'
      request.headers['Authorization'] = "Basic " + Base64.encode64("#{GITHUB_USERNAME}:#{GITHUB_PASSWORD}")
      request.body = options.to_json
    end
  end
end

和一个看起来像这样的测试:

require 'spec_helper'

describe Gist do
  context '.create' do
    it 'POSTs a new Gist to the user\'s account' do
      Faraday.should_receive(:post)
      Gist.create({:public => 'true',
                   :description => 'a test gist',
                   'files' => {'test_file.rb' => 'puts "hello world!"'}})
    end
  end
end

然而,这个测试并不能让我满意,因为我正在测试的是我正在使用法拉第进行一些POST,但我实际上无法测试URL,标题或正文,因为它们已被传入一个街区.我尝试使用法拉第测试适配器,但我也没有看到任何测试URL,标题或正文的方法.

有没有更好的方法来编写我的Rspec存根？或者我能以某种方式使用法拉第测试适配器我无法理解？

谢谢!

Answer 1

您可以使用优秀的WebMock库存根请求并测试已发出请求的期望,请参阅文档

在你的代码中:

Faraday.post do |req|
  req.body = "hello world"
  req.url = "http://example.com/"
end

Faraday.get do |req|
  req.url = "http://example.com/"
  req.params['a'] = 1
  req.params['b'] = 2
end

在RSpec文件中:

stub = stub_request(:post, "example.com")
  .with(body: "hello world", status: 200)
  .to_return(body: "a response to post")
expect(stub).to have_been_requested

expect(
  a_request(:get, "example.com")
    .with(query: { a: 1, b: 2 })
).to have_been_made.once

Answer 2

我的朋友@ n1kh1l向我指出了Rspec and_yield方法和这个SO帖子,让我像这样写我的测试:

require 'spec_helper'

describe Gist do
  context '.create' do
    it 'POSTs a new Gist to the user\'s account' do
      gist = {:public => 'true',
              :description => 'a test gist',
              :files => {'test_file.rb' => {:content => 'puts "hello world!"'}}}

      request = double
      request.should_receive(:url).with('https://api.github.com/gists')
      headers = double
      headers.should_receive(:[]=).with('Authorization', "Basic " + Base64.encode64("#{GITHUB_USERNAME}:#{GITHUB_PASSWORD}"))
      request.should_receive(:headers).and_return(headers)
      request.should_receive(:body=).with(gist.to_json)
      Faraday.should_receive(:post).and_yield(request)

      Gist.create(gist)
    end
  end
end