their_site = 'http://rest.example.com'
stub_request(:any, /#{their_site}.*/ ).to_raise(Errno::ECONNREFUSED)

their_site = 'https://rest.example.com:443/api'
stub_request(:any, %r[#{their_site}.*] ).to_timeout

stub_request(:any, %r[#{their_site}.*] )
  .to_return(status: 500, body: 'Sorry, mate.')

stub_request(:any, %r[#{their_site}.*] )
  .to_return(status: 404)

stub_request(:any, %r[#{their_site}.*] )
  .to_return(status: 200, 'We tried our best.')

stub_request(:any, /.*/ ).to_timeout