How can I validate exit value in rspec? [duplicate]

问题

This question already has answers here:

How can I validate exits and aborts in RSpec? (7 answers)

Closed 5 years ago.

I have a method that will sometimes call exit(numeric_value).

Is it possible for rspec to validate that when the method is invoked, the process is exiting with the correct value?

I have seen these other posts, but they do not answer this specific question.

• How can I validate exits and aborts in RSpec?
• How to spec methods that exit or abort

回答1:

Given sample ruby code:

def it_will_exit
  puts "before exit"
  exit(false)
  puts "never get here"
end

rspec test case can be:

it "it must exit" do
  expect { it_will_exit }.raise_exception(SystemExit)
end

it "the exit value should be false" do
  begin
    it_will_exit
  rescue SystemExit=>e
    expect(e.status).to eq(1)
  end
end

来源：https://stackoverflow.com/questions/20432358/how-can-i-validate-exit-value-in-rspec