Paymill:如何在测试时模拟付款失败？

Question

背景

• 使用Paymill的订阅计费功能开发应用程序.
• 利用Ruby包装器,我创建了一个PaymentProvider类和规范,如下所示.

题

如何使测试付款失败？(例如,卡被拒绝,或者卡在未来的订阅付款中过期)

Stripe会让我使用特殊的卡号进行此操作,但Paymill 似乎没有任何此类文档(英文).

---

payment_provider.rb

class PaymentProvider
  Paymill.api_key = ENV['PAYMILL_PRIVATE_KEY']

  def self.start_new_subscription(email, description, token)
    offer = Paymill::Offer.find(ENV['PAYMILL_OFFER_ID'])
    client = Paymill::Client.create(email: email, description: description)
    payment = Paymill::Payment.create(token: token, client: client.id)
    subscription = Paymill::Subscription.create(client: client.id, offer: offer.id, payment: payment.id)
    subscription.id
  end
end

---

payment_provider_spec.rb

require 'spec_helper'

describe PaymentProvider do

  describe "#start_new_subscription" do
    it "returns a subscription id, starting 'sub_' when successful" do
      email = "mike@mike.com"
      description = "me"
      token = get_payment_token
      subscription_id = PaymentProvider.start_new_subscription(email, description, token)
      expect(subscription_id[0,4]).to eq('sub_')
    end
  end

  def get_payment_token
    # Simulate the JavaScript bridge we would use in production
    params = {
      'transaction.mode'        => 'CONNECTOR_TEST',
      'channel.id'              => ENV['PAYMILL_PUBLIC_KEY'],
      'jsonPFunction'           => 'any_string',
      'account.number'          => '5500000000000004',
      'account.expiry.month'    => 3.years.from_now.month,
      'account.expiry.year'     => 3.years.from_now.year,
      'account.verification'    => '111'
      #'presentation.amount3D'   => BigDecimal('10.00'),
      #'presentation.currency3D' => 'GBP'
    }
    http = Net::HTTP.new('test-token.paymill.de', 443)
    http.use_ssl = true
    response = http.get url_query_string(params)
    response.body.scan(/tok_\w*\b/).first # Use a regex to pull the token from the (not-quite-JSON) response
  end

  def url_query_string(hash)
    "/?" << URI.escape(hash.collect{|k,v| "#{k}=#{v}"}.join('&'))
  end

end

Answer 1

截至目前，还没有特殊的信用卡号码来模拟这些问题。然而，由于社区的要求，目前该方案尚待实施。我建议向支持人员发送电子邮件，以表达对此功能的兴趣。请求越多，该功能的实现速度就越快。

编辑：PAYMILL 现在提供特殊的万事达卡号码，如果使用到期月份和年份的特定组合，该号码将会失败。例如，如果发送的到期日期为 02/2020，则卡 5105105105105100 将因 RESPONSE_BACKEND_BLACKLISTED 而失败。