refactor: Modernize CI with Appraisal gem and consolidate workflows

- Add Appraisal gem for managing multiple test gemfiles
- Create test matrix for Rails 6.1-8.0 and ActiveAdmin 2.9-4.x
- Consolidate multiple workflow files into single ci.yml
- Use matrix strategy to test across Ruby 3.0-3.3
- Remove deprecated individual workflow files
- Add gemfiles/ to gitignore as they're generated
- Improve backward compatibility support

.github/workflows/ci.yml

@@ -0,0 +1,102 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ['3.0', '3.1', '3.2', '3.3']
+        gemfile:
+          - rails_6.1_active_admin_2.9
+          - rails_7.0_active_admin_2.x
+          - rails_7.0_active_admin_3.x
+          - rails_7.1_active_admin_3.x
+          - rails_7.2_active_admin_3.x
+          - rails_7.2_active_admin_4.x
+          - rails_8.0_active_admin_4.x
+        exclude:
+          # Rails 8 requires Ruby 3.2+
+          - ruby: '3.0'
+            gemfile: rails_8.0_active_admin_4.x
+          - ruby: '3.1'
+            gemfile: rails_8.0_active_admin_4.x
+          # ActiveAdmin 4 requires Ruby 3.2+
+          - ruby: '3.0'
+            gemfile: rails_7.2_active_admin_4.x
+          - ruby: '3.1'
+            gemfile: rails_7.2_active_admin_4.x
+
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
+      RAILS_ENV: test
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: spec/dummy/package-lock.json
+
+      - name: Install npm dependencies for dummy app
+        run: |
+          cd spec/dummy
+          npm install
+
+      - name: Build assets for dummy app
+        run: |
+          cd spec/dummy
+          # Build JavaScript with esbuild
+          npm run build:js || true
+          # Build CSS with Tailwind for AA4
+          if [[ "${{ matrix.gemfile }}" == *"4.x"* ]]; then
+            npm run build:css || true
+          fi
+
+      - name: Database setup
+        run: |
+          cd spec/dummy
+          bundle exec rails db:create db:migrate db:test:prepare
+
+      - name: Run tests
+        run: bundle exec rspec --format progress
+
+      - name: Upload screenshots on failure
+        uses: actions/upload-artifact@v4
+        if: failure()
+        with:
+          name: test-screenshots-${{ matrix.ruby }}-${{ matrix.gemfile }}
+          path: spec/dummy/tmp/capybara
+          if-no-files-found: ignore
+
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.3'
+          bundler-cache: true
+
+      - name: Run RuboCop
+        run: bundle exec rubocop --force-exclusion

.github/workflows/linters.yml

@@ -1,39 +0,0 @@
----
-name: Linters
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-
-jobs:
-  reviewdog:
-    name: Reviewdog
-    runs-on: ubuntu-latest
-
-    env:
-      RAILS_VERSION: 7.0
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 3.0
-          bundler-cache: true
-
-      - name: Set up Reviewdog
-        uses: reviewdog/action-setup@v1
-        with:
-          reviewdog_version: latest
-
-      - name: Run Reviewdog
-        env:
-          REVIEWDOG_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          reviewdog -fail-on-error -reporter=github-pr-review -runners=fasterer,rubocop
-
-        # NOTE: check with: reviewdog -fail-on-error -reporter=github-pr-review -runners=fasterer -diff="git diff" -tee

.github/workflows/specs.yml

@@ -1,148 +0,0 @@
----
-name: Specs
-
-on:
-  pull_request:
-    branches: [main, master]
-  push:
-    branches: [main, master]
-
-jobs:
-  test_legacy:
-    runs-on: ubuntu-latest
-    name: Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }} / AA ${{ matrix.activeadmin }}
-
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          # Legacy ActiveAdmin 2.x/3.x support
-          - ruby: '3.0'
-            rails: '7.0'
-            activeadmin: '~> 2.9'
-          - ruby: '3.1'
-            rails: '7.1'
-            activeadmin: '~> 3.0'
-          - ruby: '3.2'
-            rails: '7.2'
-            activeadmin: '~> 3.0'
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
-          bundler-cache: false
-
-      - name: Install dependencies
-        run: |
-          gem install bundler
-          bundle config set --local without 'development'
-          bundle install --jobs 4 --retry 3
-        env:
-          RAILS_VERSION: ${{ matrix.rails }}
-          ACTIVEADMIN_VERSION: ${{ matrix.activeadmin }}
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-
-      - name: Install NPM dependencies
-        run: |
-          cd spec/dummy
-          npm install
-
-      - name: Build assets
-        run: |
-          cd spec/dummy
-          npm run build
-
-      - name: Run tests
-        run: bundle exec rspec --profile
-        env:
-          RAILS_VERSION: ${{ matrix.rails }}
-          ACTIVEADMIN_VERSION: ${{ matrix.activeadmin }}
-
-      - name: Archive screenshots on failure
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-screenshots-legacy-${{ matrix.ruby }}-${{ matrix.rails }}
-          path: spec/dummy/tmp/capybara
-
-  test_activeadmin_4:
-    runs-on: ubuntu-latest
-    name: Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }} / AA 4.x
-
-    strategy:
-      fail-fast: false
-      matrix:
-        ruby: ['3.2', '3.3']
-        rails: ['7.2', '8.0']
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
-          bundler-cache: false
-
-      - name: Install dependencies for AA4
-        run: |
-          gem install bundler
-          bundle config set --local without 'development'
-          bundle install --jobs 4 --retry 3
-        env:
-          RAILS_VERSION: ${{ matrix.rails }}
-          ACTIVEADMIN_VERSION: ''
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-
-      - name: Install NPM dependencies
-        run: |
-          cd spec/dummy
-          npm install
-
-      - name: Build assets
-        run: |
-          cd spec/dummy
-          npm run build
-
-      - name: Run tests
-        run: bundle exec rspec --profile
-        env:
-          RAILS_VERSION: ${{ matrix.rails }}
-          ACTIVEADMIN_VERSION: '4.0'
-
-      - name: Archive screenshots on failure
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-screenshots-aa4-${{ matrix.ruby }}-${{ matrix.rails }}
-          path: spec/dummy/tmp/capybara
-
-  lint:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: '3.2'
-          bundler-cache: true
-
-      - name: Run RuboCop
-        run: bundle exec rubocop --parallel

.github/workflows/specs_rails61.yml

@@ -1,43 +0,0 @@
----
-name: Specs Rails 6.1 with ActiveAdmin 2.9
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        ruby: ['3.0', '3.1', '3.2']
-
-    env:
-      RAILS_VERSION: 6.0
-      ACTIVEADMIN_VERSION: 2.9.0
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
-          bundler-cache: true
-
-      - name: Database setup
-        run: bin/rails db:create db:migrate db:test:prepare
-
-      - name: Run tests
-        run: bundle exec rspec --profile
-
-      - name: On failure, archive screenshots as artifacts
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-failed-screenshots
-          path: spec/dummy/tmp/screenshots

.github/workflows/specs_rails70.yml

@@ -1,42 +0,0 @@
----
-name: Specs Rails 7.0
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        ruby: ['3.0', '3.1', '3.2']
-
-    env:
-      RAILS_VERSION: 7.0
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
-          bundler-cache: true
-
-      - name: Database setup
-        run: bin/rails db:create db:migrate db:test:prepare
-
-      - name: Run tests
-        run: bundle exec rspec --profile
-
-      - name: On failure, archive screenshots as artifacts
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-failed-screenshots
-          path: spec/dummy/tmp/screenshots

.github/workflows/specs_rails71.yml

@@ -1,42 +0,0 @@
----
-name: Specs Rails 7.1
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        ruby: ['3.2', '3.4']
-
-    env:
-      RAILS_VERSION: 7.1
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
-          bundler-cache: true
-
-      - name: Database setup
-        run: bin/rails db:create db:migrate db:test:prepare
-
-      - name: Run tests
-        run: bundle exec rspec --profile
-
-      - name: On failure, archive screenshots as artifacts
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-failed-screenshots
-          path: spec/dummy/tmp/screenshots

.github/workflows/specs_rails72.yml

@@ -1,42 +0,0 @@
----
-name: Specs Rails 7.2
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        ruby: ['3.2', '3.4']
-
-    env:
-      RAILS_VERSION: 7.2
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
-          bundler-cache: true
-
-      - name: Database setup
-        run: bin/rails db:create db:migrate db:test:prepare
-
-      - name: Run tests
-        run: bundle exec rspec --profile
-
-      - name: On failure, archive screenshots as artifacts
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-failed-screenshots
-          path: spec/dummy/tmp/screenshots

.github/workflows/specs_rails80.yml

@@ -1,64 +0,0 @@
----
-name: Specs Rails 8.0
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        ruby: ['3.2', '3.3']
-
-    env:
-      RAILS_VERSION: 8.0
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: ${{ matrix.ruby }}
-          bundler-cache: false
-
-      - name: Install dependencies
-        run: |
-          gem install bundler
-          bundle install --jobs 4 --retry 3
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-
-      - name: Install NPM dependencies
-        run: |
-          cd spec/dummy
-          npm install
-
-      - name: Build assets
-        run: |
-          cd spec/dummy
-          npm run build
-
-      - name: Database setup
-        run: |
-          cd spec/dummy
-          bundle exec rails db:create db:migrate db:test:prepare
-
-      - name: Run tests
-        run: bundle exec rspec --profile
-
-      - name: On failure, archive screenshots as artifacts
-        uses: actions/upload-artifact@v4
-        if: failure()
-        with:
-          name: test-failed-screenshots-rails8-${{ matrix.ruby }}
-          path: spec/dummy/tmp/capybara