Gemfile in u-case-4.1.1 vs Gemfile in u-case-4.2.0

@@ -1,32 +1,43 @@
 source "https://rubygems.org"
 
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
-activemodel_version = ENV.fetch('ACTIVEMODEL_VERSION', '6.1.0')
+activerecord_version = ENV.fetch('ACTIVERECORD_VERSION', '6.1')
 
-activemodel = case activemodel_version
+activerecord = case activerecord_version
               when '3.2' then '3.2.22'
+              when '4.0' then '4.0.13'
+              when '4.1' then '4.1.16'
+              when '4.2' then '4.2.11'
+              when '5.0' then '5.0.7'
+              when '5.1' then '5.1.7'
               when '5.2' then '5.2.3'
-              when '6.0' then '6.0.2'
+              when '6.0' then '6.0.3'
               end
 
-if activemodel_version < '6.1.0'
-  gem 'activemodel', activemodel, require: false
-  gem 'activesupport', activemodel, require: false
-end
-
 simplecov_version =
   case RUBY_VERSION
   when /\A2.[23]/ then '~> 0.17.1'
   when /\A2.4/ then '~> 0.18.5'
   else '~> 0.19'
   end
 
 group :test do
-  gem 'minitest', activemodel_version < '4.1' ? '~> 4.2' : '~> 5.0'
+  gem 'minitest', activerecord_version < '4.1' ? '~> 4.2' : '~> 5.0'
 
   gem 'simplecov', simplecov_version, require: false
+
+  if activerecord
+    sqlite3 =
+      case activerecord
+      when /\A6\.0/, nil then '~> 1.4.0'
+      else '~> 1.3.0'
+      end
+
+    gem 'sqlite3', sqlite3
+    gem 'activerecord', activerecord, require: 'active_record'
+  end
 end
 
 pry_byebug_version =
   case RUBY_VERSION
   when /\A2.[23]/ then '3.6'