Check raise error with backtrace

gistfile1.rb

def capture_backtrace(with_error: StandardError, &action)
  action.call
  :no_error_raised
rescue with_error => e
  e.backtrace
end

# This fails if SocketError is not raised,
# or if the message doesn't match
it "raises a socket error reporting the address info" do
  expect{ zone.sync_update }.to raise_error(SocketError)
    .with_message('getaddrinfo: Name or service not known: example.com')
end

# Fails if SocketError is not raised, or if
# nothing is raised. If nothing is raised the error is:
# expected :no_error_raised to include /.../, but it does not respond to `include?`
it "keeps the original backtrace details" do
  expected_failure_callsite = /lib\/zone_sync.rb:88:in `getaddrinfo\'\z/
  expect(
    capture_backtrace(with_error: SocketError) { zone.sync_update }
  ).to include expected_failure_callsite
end