Configure unit tests in CICD

.github/workflows/tests.yml

@@ -0,0 +1,34 @@
+name: Run unit tests
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  unit_tests:
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: ruby/setup-ruby@v1
+      - run: bundle install
+      - run: |
+          bundle exec rake db:create db:schema:load
+          bundle exec rspec
+        env:
+          RAILS_ENV: test
+          DATABASE_URL: postgres://postgres:postgres@postgres:5432/postgres