test-parity.yml

name: Test Parity Verification

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]

jobs:
  test-parity:
    name: Verify C++ wrapper maintains test parity with original C implementation
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y cmake build-essential

      - name: Configure build
        run: |
          mkdir -p build
          cd build
          cmake -DCMAKE_BUILD_TYPE=Release ..

      - name: Build all components
        run: |
          cd build
          cmake --build . --parallel --config Release

      - name: Build C tests
        run: |
          cd build
          cmake --build . --target test_csv --config Release

      - name: Run C tests
        run: |
          ./build/legacy/test_csv > /tmp/c_tests_output.txt 2>&1
          echo "✓ C tests completed"
          cat /tmp/c_tests_output.txt

      - name: Run C++ tests
        run: |
          ./build/tests/test_parity > /tmp/cpp_tests_output.txt 2>&1
          echo "✓ C++ tests completed"
          cat /tmp/cpp_tests_output.txt

      - name: Verify test parity
        run: |
          echo "Comparing test outputs..."
          if diff /tmp/c_tests_output.txt /tmp/cpp_tests_output.txt; then
            echo "✅ PERFECT PARITY: C and C++ tests produce identical output"
            exit 0
          else
            echo "❌ PARITY MISMATCH: Test outputs differ"
            echo ""
            echo "=== Differences ==="
            diff -u /tmp/c_tests_output.txt /tmp/cpp_tests_output.txt || true
            exit 1
          fi

      - name: Upload test results
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: test-outputs
          path: |
            /tmp/c_tests_output.txt
            /tmp/cpp_tests_output.txt