💚 Use custom gemfile for test

Author: pboling

.github/workflows/ci.yml

@@ -99,6 +99,8 @@ jobs:
           ore list
           echo "==> ore check:"
           ore check
+          echo "==> Smoke a Rake"
+          bundle exec rake -T
 
 
   # Test the action with ore gem installation (Compiled Extensions)
@@ -236,13 +238,22 @@ jobs:
   test-fallback:
     name: Test Fallback (${{ matrix.ruby }})
     runs-on: ubuntu-latest
+    env:
+      BUNDLE_GEMFILE: TestGemfile
     strategy:
       fail-fast: false
       matrix:
         ruby: ['3.1', 'jruby', 'truffleruby', '4.0', 'head']
     steps:
       - uses: actions/checkout@v5
 
+      - name: Create test Gemfile
+        run: |
+          cat > ${{ env.BUNDLE_GEMFILE }} << 'EOF'
+          source 'https://gem.coop'
+          gem 'rake'
+          EOF
+
       - name: Setup Ruby (should use fallback)
         uses: ./
         with:
@@ -264,3 +275,5 @@ jobs:
           gem --version
           echo "==> Bundler version:"
           bundle --version
+          echo "==> Smoke a Rake"
+          bundle exec rake -T