How can I validate exits and aborts in RSpec?

Question

I am trying to spec behaviors for command line arguments my script receives to ensure that all validation passes. Some of my command line arguments will result in abo

Answer 1

There's no need for custom matchers or rescue blocks, simply:

expect { exit 1 }.to raise_error(SystemExit) do |error|
  expect(error.status).to eq(1)
end

I'd argue that this is superior because it's explicit and plain Rspec.