fix(test): allow rack 2/3 via RACK_VERSION to fix x509 tests

.gitignore

@@ -32,4 +32,5 @@ Gemfile.lock
 gemfiles/*.gemfile.lock
 reports/pacts
 spec/examples.txt
-*bethtest*
+*bethtest*
+.DS_Store

Gemfile

@@ -26,5 +26,10 @@ end
 group :test do
   gem 'faraday', '~>2.0'
   gem 'faraday-retry', '~>2.0'
-  gem 'rackup', '~> 2.1'
+  if ENV['RACK_VERSION'] == '2'
+    gem 'rack', '>= 2.0', '< 3.0'
+  else
+    gem 'rack', '>= 3.0', '< 4.0'
+    gem 'rackup', '~> 2.0'
+  end
 end

spec/support/ssl_server.rb

@@ -34,13 +34,15 @@ def webrick_opts port
   require "rack"
   begin
     require "rackup/handler/webrick" # rack 3
+    PactWEBrick = Rackup::Handler::WEBrick
   rescue LoadError
     require "rack/handler/webrick"  # rack 2
+    PactWEBrick = Rack::Handler::WEBrick
   end
 
   opts = webrick_opts(4444)
 
-  Rack::Handler::WEBrick.run(app, **opts) do |server|
+  PactWEBrick.run(app, **opts) do |server|
     @server = server
   end
 end