我可以窥探一堂课吗？

Question

为了使我的测试套件更具可读性，我在我的规范中引入了间谍，但我不确定如何处理类方法。有可能＆＃34;窥探一个班级＆＃34;？

我们说我有以下示例代码

  def publish(post)
    Publisher.call(post)
    post.save
  end

和通讯规范

it 'delegates the publishing to Publisher' do
  let(:blog) { ... }
  let(:post) { ... }

  expect(Publisher).to receive(:call).with(post).and_call_original
  blog.publish(post)
end

是否可以使用间谍重写规范？

由于

Answer 1

您可以通过allow加expect使用spies on partial doubles：

it 'delegates the publishing to Publisher' do
  let(:blog) { ... }
  let(:post) { ... }

  allow(Publisher).to receive(:call)
  blog.publish(post)
  expect(Publisher).to have_received(:call).with(post)
end