Test if the AppSignal middleware isn't added#1446

unflxw merged 2 commits intoonly-instrument-rails-if-appsignal-startedappsignal/appsignal-ruby:only-instrument-rails-if-appsignal-startedfrom

fix-railtie-middleware-assertionsappsignal/appsignal-ruby:fix-railtie-middleware-assertionsCopy head branch name to clipboard