Question

我在单例类中有一些方法需要在Ruby on Rails上编写rspec。这是示例课

class Logger
  class << self
    def log(event, msg)
      data = Helper.send(event, msg)
      PublishJob.perform(data)
    end
  end
end

如何编写名为Helper.send ...的测试方法并运行作业？

谢谢

Answer 1

您可以通过对类的方法进行存根测试来测试Logger是否调用Helper和PublishJob：

describe Logger do
  let(:event) { double("Event") }
  let(:msg) { double("Message") }
  let(:data) { double("Data") }

  before do
    allow(Helper).to receive(:send).and_return(data)
    allow(PublishJob).to receive(:perform)
  end

  before { Logger.log(event, msg) }

  it "sends a message and performs a job" do
    expect(Helper).to have_received(:send).with(event, msg)
    expect(PublishJob).to have_received(:perform).with(data)
  end
end

执行该作业的详细信息可以在该作业本身的规范文件中进行测试。

单例类RSpec的写作规范

1 个答案: