Test against upcoming Rails 8.x

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby: ["ruby-2.5", "ruby-2.6", "ruby-2.7", "ruby-3.0", "ruby-3.1", "ruby-3.2", "ruby-3.3", "jruby-9.4"]
-        gemfile: ["rails-5.0", "rails-5.1", "rails-5.2", "rails-6.0", "rails-6.1", "rails-7.0", "rails-7.1", "rails-7.2"]
+        gemfile: ["rails-5.0", "rails-5.1", "rails-5.2", "rails-6.0", "rails-6.1", "rails-7.0", "rails-7.1", "rails-7.2", "rails-main"]
         exclude:
           - ruby: "ruby-3.3"
             gemfile: "rails-5.2"

gemfiles/Gemfile.rails-7.2

@@ -5,7 +5,7 @@ gemspec path: ".."
 gem "rake", "~> 12.0"
 gem "warning"
 
-gem "rails", "~> 7.2.0.beta3"
+gem "rails", "~> 7.2.0"
 gem "sqlite3", "~> 1.4",                platforms: :mri
 gem "activerecord-jdbcsqlite3-adapter", platforms: :jruby
 

gemfiles/Gemfile.rails-main

@@ -0,0 +1,22 @@
+source "https://rubygems.org"
+
+gemspec path: ".."
+
+gem "rake", "~> 12.0"
+gem "warning"
+
+gem "rails", github: "rails/rails"
+gem "sqlite3", "~> 1.4",                platforms: :mri
+gem "activerecord-jdbcsqlite3-adapter", platforms: :jruby
+
+gem "capybara"
+
+if RUBY_VERSION >= "3.1.0"
+  # mail gem dependencies on Ruby 3.1+
+  gem "net-smtp"
+  gem "net-imap"
+  gem "net-pop"
+
+  # rake gem dependency on Ruby 3.1+
+  gem "matrix"
+end