Rakefile in identity_cache-0.5.1 vs Rakefile in identity_cache-1.0.0

@@ -1,24 +1,33 @@
 #!/usr/bin/env rake
+# frozen_string_literal: true
 require 'bundler/gem_tasks'
 
 require 'rake/testtask'
 require 'rdoc/task'
 
-desc 'Default: run unit tests.'
-task :default => :test
+desc('Default: run tests and style checks.')
+task(default: [:test, :rubocop])
 
-desc 'Test the identity_cache plugin.'
+desc('Test the identity_cache plugin.')
 Rake::TestTask.new(:test) do |t|
   t.libs << 'lib'
   t.libs << 'test'
   t.pattern = 'test/**/*_test.rb'
   t.verbose = true
 end
 
-desc 'Update serialization format test fixture.'
+task :rubocop do
+  require 'rubocop/rake_task'
+  RuboCop::RakeTask.new
+end
+
+desc('Update serialization format test fixture.')
 task :update_serialization_format do
-  ruby './test/helpers/update_serialization_format.rb'
+  %w(mysql2 postgresql).each do |db|
+    ENV["DB"] = db
+    ruby './test/helpers/update_serialization_format.rb'
+  end
 end
 
 namespace :benchmark do
   desc "Run the identity cache CPU benchmark"
   task :cpu do