我如何用rspec写这个

Question

我将我的rspec版本升级到最新版本，我的测试打破了类似语法

it "should delete a company" do
  expect { click_link "Delete Company" }.should change(Company, :count).by(-1)
end

我看了documentation，在目前的情况下我看不到任何可以做到这一点的事情......关于如何实现这一点的任何想法

我得到的错误是

9) Company Pages Edit page as an admin user should delete a company
   Failure/Error: expect { click_link "Delete Company" }.should change(Company, :count).by(-1)
   NoMethodError:
     undefined method `call' for #<RSpec::Expectations::ExpectationTarget:0x007fccafdfc360>
   # ./spec/requests/companies_spec.rb:79:in `block (3 levels) in <top (required)>'

Answer 1

以下是关于使用期望的doc

it "should delete a company" do
  expect { click_link "Delete Company" }.to change{Company.count}.by(-1)
end

请注意以下更改

1. should变为to
2. (Company, :count)变为{Company.count}