Fix test with rack >= 3 and test with Ruby > 3.0

.github/workflows/ruby.yml

@@ -1,10 +1,3 @@
-# This workflow uses actions that are not certified by GitHub.
-# They are provided by a third-party and are governed by
-# separate terms of service, privacy policy, and support
-# documentation.
-# This workflow will download a prebuilt Ruby version, install dependencies and run tests with Rake
-# For more information see: https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby
-
 name: Tests
 on: [push, pull_request]
 
@@ -13,10 +6,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: [ '2.5', '2.6', '2.7', '3.0' ]
+        ruby: [ '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3' ]
     name: Ruby ${{ matrix.ruby }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:

Gemfile

@@ -9,4 +9,5 @@ gem 'pry'
 group :test do
   gem 'rspec', '~> 3'
   gem 'rack-test'
+  gem 'rack-session'
 end

spec/warden/proxy_spec.rb

@@ -1,5 +1,8 @@
 # encoding: utf-8
 # frozen_string_literal: true
+
+require 'rack/session'
+
 RSpec.describe Warden::Proxy do
   before(:all) do
     load_strategies