diff --git a/.gitea/workflows/code-quality.yaml b/.gitea/workflows/code-quality.yaml
new file mode 100644
index 0000000..9ee421c
--- /dev/null
+++ b/.gitea/workflows/code-quality.yaml
@@ -0,0 +1,36 @@
+name: Code Quality
+
+on:
+  push:
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v5
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: .ruby-version
+          bundler-cache: true
+
+      - name: Check formatting
+        run: bundle exec rubocop --only Layout --parallel
+
+  lint:
+    runs-on: ubuntu-latest
+    needs: format
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v5
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: .ruby-version
+          bundler-cache: true
+
+      - name: Run lint
+        run: bundle exec rubocop --except Layout --parallel
diff --git a/.gitea/workflows/run-tests.yaml b/.gitea/workflows/run-tests.yaml
index ed4fcf2..8fd62c2 100644
--- a/.gitea/workflows/run-tests.yaml
+++ b/.gitea/workflows/run-tests.yaml
@@ -3,14 +3,17 @@ on:
   push:
 
 jobs:
-  test-project:
+  test:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository code
         uses: actions/checkout@v5
+
       - name: Setup ruby
         uses: ruby/setup-ruby@v1
-      - name: Install dependencies
-        run: bundle install
+        with:
+          ruby-version: .ruby-version
+          bundler-cache: true
+
       - name: Run tests
         run: bundle exec rake test
\ No newline at end of file
diff --git a/.rubocop.yml b/.rubocop.yml
index 5c143cd..9c7b034 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,3 +1,6 @@
 AllCops:
   TargetRubyVersion: 3.4
   NewCops: enable
+plugins: 
+  - rubocop-minitest
+  - rubocop-rake
diff --git a/Gemfile b/Gemfile
index ba23d1b..5c826c4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,3 +8,5 @@ gem 'minitest', '~> 5.25'
 gem 'rake', '~> 13.3'
 
 gem 'rubocop', require: false
+gem 'rubocop-minitest', '~> 0.38.2', require: false
+gem 'rubocop-rake', '~> 0.7.1', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 2db42d2..61a9cc8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,6 +29,13 @@ GEM
     rubocop-ast (1.46.0)
       parser (>= 3.3.7.2)
       prism (~> 1.4)
+    rubocop-minitest (0.38.2)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.75.0, < 2.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
+    rubocop-rake (0.7.1)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.72.1)
     ruby-progressbar (1.13.0)
     unicode-display_width (3.1.5)
       unicode-emoji (~> 4.0, >= 4.0.4)
@@ -42,6 +49,8 @@ DEPENDENCIES
   minitest (~> 5.25)
   rake (~> 13.3)
   rubocop
+  rubocop-minitest (~> 0.38.2)
+  rubocop-rake (~> 0.7.1)
 
 BUNDLED WITH
    2.7.1
diff --git a/Rakefile b/Rakefile
index 15dc09b..1dcae1b 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,7 +1,8 @@
-require "rake/testtask"
+# frozen_string_literal: true
+
+require 'rake/testtask'
 
 Rake::TestTask.new(:test) do |t|
-  t.libs << "tests"
-  t.test_files = FileList["tests/**/*_test.rb"]
+  t.libs << 'tests'
+  t.test_files = FileList['tests/**/*_test.rb']
 end
-
diff --git a/main.rb b/main.rb
index f2db1ba..714359a 100644
--- a/main.rb
+++ b/main.rb
@@ -1,6 +1,8 @@
-#! /usr/bin/env ruby
+# frozen_string_literal: true
 
+# main
 def main
+  0
 end
 
 main if __FILE__ == $PROGRAM_NAME
diff --git a/tests/main_test.rb b/tests/main_test.rb
index 4a1daec..169c00f 100644
--- a/tests/main_test.rb
+++ b/tests/main_test.rb
@@ -1,8 +1,11 @@
+# frozen_string_literal: true
+
 require 'minitest/autorun'
 require_relative '../main'
 
+# TestMain
 class TestMain < Minitest::Test
   def test_main
-    assert_equal true, true
+    assert_equal 0, main
   end
 end