Run the CI on all supported ruby versions

`solidus_bolt` needs to be disabled for the dummy app otherwise it
fails due to the contrived nature of the app.

For rubies < 3 using the latest rails we need to use the external
net/http gem to avoid this error:

rake aborted!
LoadError: cannot load such file -- net/smtp
/home/circleci/project/vendor/bundle/v3.1/ruby/3.1.0/gems/activesupport-6.1.6.1/lib/active_support/dependencies.rb:332:in `require'
/home/circleci/project/vendor/bundle/v3.1/ruby/3.1.0/gems/activesupport-6.1.6.1/lib/active_support/dependencies.rb:332:in `block in require'
/home/circleci/project/vendor/bundle/v3.1/ruby/3.1.0/gems/activesupport-6.1.6.1/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/circleci/project/vendor/bundle/v3.1/ruby/3.1.0/gems/activesupport-6.1.6.1/lib/active_support/dependencies.rb:332:in `require'
/home/circleci/project/vendor/bundle/v3.1/ruby/3.1.0/gems/mail-2.7.1/lib/mail.rb:9:in `<module:Mail>'
/home/circleci/project/vendor/bundle/v3.1/ruby/3.1.0/gems/mail-2.7.1/lib/mail.rb:3:in `<top (required)>'

Ref rails/rails#44175 (comment)

Author: elia

.circleci/config.yml

@@ -1,6 +1,7 @@
 version: 2.1
 
 orbs:
+  # Required for feature specs.
   browser-tools: circleci/browser-tools@1.1
 
   # Always take the latest version of the orb, this allows us to
@@ -11,21 +12,41 @@ orbs:
 
 jobs:
   run-specs-with-postgres:
-    executor: solidusio_extensions/postgres
+    executor:
+      name: solidusio_extensions/postgres
+      ruby_version: '3.1'
     steps:
       - browser-tools/install-browser-tools
-      - solidusio_extensions/run-tests
+      - checkout
+      - solidusio_extensions/run-tests-solidus-master
+      - solidusio_extensions/store-test-results
   run-specs-with-mysql:
-    executor: solidusio_extensions/mysql
+    executor:
+      name: solidusio_extensions/mysql
+      ruby_version: '3.0'
     steps:
       - browser-tools/install-browser-tools
-      - solidusio_extensions/run-tests
+      - checkout
+      - solidusio_extensions/run-tests-solidus-current
+      - solidusio_extensions/store-test-results
+
+  run-specs-with-sqlite:
+    executor:
+      name: solidusio_extensions/sqlite
+      ruby_version: '2.7'
+    steps:
+      - browser-tools/install-browser-tools
+      - checkout
+      - solidusio_extensions/run-tests-solidus-older
+      - solidusio_extensions/store-test-results
+
 
 workflows:
   "Run specs on supported Solidus versions":
     jobs:
       - run-specs-with-postgres
       - run-specs-with-mysql
+      - run-specs-with-sqlite
   "Weekly run specs against master":
     triggers:
       - schedule:
@@ -37,3 +58,4 @@ workflows:
     jobs:
       - run-specs-with-postgres
       - run-specs-with-mysql
+      - run-specs-with-sqlite

Gemfile

@@ -30,6 +30,18 @@ end
 
 gem 'rails-controller-testing', group: :test
 
+if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('3')
+  # While we still support Ruby < 3 we need to workaround a limitation in
+  # the 'async' gem that relies on the latest ruby, since RubyGems doesn't
+  # resolve gems based on the required ruby version.
+  gem 'async', '< 3', require: false
+
+  # 'net/smtp' is required by 'mail', see:
+  # - https://github.com/ruby/net-protocol/issues/10
+  # - https://stackoverflow.com/a/72474475
+  gem 'net-smtp', require: false
+end
+
 gemspec
 
 # Use a local Gemfile to include development dependencies that might not be

Rakefile

@@ -1,5 +1,8 @@
 # frozen_string_literal: true
 
+# Don't build a dummy app with solidus_bolt enabled
+ENV['SKIP_SOLIDUS_BOLT'] = 'true'
+
 require 'bundler'
 Bundler::GemHelper.install_tasks