Rakefile in imap_guard-1.0.0 vs Rakefile in imap_guard-1.2.0

@@ -1,9 +1,13 @@
+# frozen_string_literal: true
+
 require "bundler/gem_tasks"
 require "rspec/core/rake_task"
+require "rubocop/rake_task"
 
 RSpec::Core::RakeTask.new(:spec) do |t|
-  t.ruby_opts = '-w'
+  t.ruby_opts = "-w"
 end
 
-task default: :spec
+RuboCop::RakeTask.new(:rubocop)
 
+task default: %i[spec rubocop]