CI fixes

Author: Igor

Gemfile

@@ -12,5 +12,10 @@ gemspec
 
 # To use a debugger
 gem 'byebug', group: [:development, :test]
-gem 'sqlite3', '~> 1.3', '<= 1.4.2', group: [:development, :test]
+# Rails 8+ requires sqlite3 >= 2.1; older Rails use 1.4.x for Ruby 2.7 compatibility
+if ENV['RAILS_VERSION']&.start_with?('8.')
+  gem 'sqlite3', '>= 2.1', group: [:development, :test]
+else
+  gem 'sqlite3', '~> 1.3', '<= 1.4.2', group: [:development, :test]
+end
 gem 'sass-rails', '~> 5.0.7', group: [:development, :test]

imageboss-rails.gemspec

@@ -33,4 +33,14 @@ Gem::Specification.new do |s|
   end
 
   s.add_dependency 'rails', rails
+
+  # Rails 5.2 and 6.1 LineFiltering#run expects 2 args; Minitest 6 changed to 3. Pin to 5.x.
+  if rails_version != "default" && (rails_version.start_with?("5.") || rails_version.start_with?("6.1"))
+    s.add_development_dependency "minitest", "~> 5.14"
+  end
+
+  # Silence "will no longer be part of the default gems starting from Ruby 3.4.0" warnings in CI.
+  s.add_development_dependency "bigdecimal"
+  s.add_development_dependency "mutex_m"
+  s.add_development_dependency "drb"
 end

test/dummy/config/application.rb

@@ -17,6 +17,11 @@ class Application < Rails::Application
     config.imageboss.source = 'mywebsite-assets'
     config.imageboss.asset_host = 'https://mywebsite.com'
 
+    # Rails 8.1+: opt in to to_time preserving timezone (silences deprecation)
+    if config.respond_to?(:active_support) && config.active_support.respond_to?(:to_time_preserves_timezone=)
+      config.active_support.to_time_preserves_timezone = :zone
+    end
+
     # Silence SQLite boolean serialization deprecation (Rails 5.2+)
     if config.active_record.respond_to?(:sqlite3)
       config.active_record.sqlite3.represent_boolean_as_integer = true if config.active_record.sqlite3.respond_to?(:represent_boolean_as_integer=)