ruby - 根据要求使用特定的 VCR 磁带

Question

情况:使用 Rspec、FactoryGirl 和 VCR 测试 Rails 应用程序。

每次创建用户时，都会通过 Stripe 的 API 创建关联的 Stripe 客户。测试时，添加 VCR.use_cassette 或 describe "...", vcr: {cassette_name: 'stripe-customer'} do ... 到涉及用户创建的每个规范。我的实际解决方案如下:

RSpec.configure do |config|
  config.around do |example|
    VCR.use_cassette('stripe-customer') do |cassette|
      example.run
    end
  end
end

但这是不可持续的，因为每个 http 请求都会使用同一个盒式磁带，这当然是非常糟糕的。

问题如何根据个人要求使用特定的夹具(暗盒)，而不是为每个规范指定暗盒？

我有这样的想法，伪代码:

stub_request(:post, "api.stripe.com/customers").with(File.read("cassettes/stripe-customer"))

相关代码片段(作为 gist ):

# user_observer.rb

class UserObserver < ActiveRecord::Observer

  def after_create(user)
    user.create_profile!

    begin
      customer =  Stripe::Customer.create(
        email: user.email,
        plan: 'default'
        )

      user.stripe_customer_id = customer.id
      user.save!
    rescue Stripe::InvalidRequestError => e
      raise e
    end

  end
end


# vcr.rb

require 'vcr'

VCR.configure do |config|
  config.default_cassette_options = { record: :once, re_record_interval: 1.day }
  config.cassette_library_dir = 'spec/fixtures/cassettes'
  config.hook_into :webmock
  config.configure_rspec_metadata!
end


# user_spec.rb

describe :InstanceMethods do
  let(:user) { FactoryGirl.create(:user) }

  describe "#flexible_name" do
    it "returns the name when name is specified" do
      user.profile.first_name = "Foo"
      user.profile.last_name = "Bar"

      user.flexible_name.should eq("Foo Bar")
    end
  end
end

编辑

我结束了这样的事情:

VCR.configure do |vcr|
  vcr.around_http_request do |request|

    if request.uri =~ /api.stripe.com/
      uri = URI(request.uri)
      name = "#{[uri.host, uri.path, request.method].join('/')}"
      VCR.use_cassette(name, &request)

    elsif request.uri =~ /twitter.com/
      VCR.use_cassette('twitter', &request)
    else
    end

  end
end

Answer 1

VCR 2.x 包含专门用于支持此类用例的功能:

https://relishapp.com/vcr/vcr/v/2-4-0/docs/hooks/before-http-request-hook ! https://relishapp.com/vcr/vcr/v/2-4-0/docs/hooks/after-http-request-hook ! https://relishapp.com/vcr/vcr/v/2-4-0/docs/hooks/around-http-request-hook !

VCR.configure do |vcr|
  vcr.around_http_request(lambda { |req| req.uri =~ /api.stripe.com/ }) do |request|
    VCR.use_cassette(request.uri, &request)
  end
end