basic-checks.yml

# Filename: .github/workflows/basic-checks.yml
# Objective: Verify syntax, headers, and lightweight regression tests on push/PR.

name: basic-checks

on:
  pull_request:
  push:
    branches:
      - main

jobs:
  checks:
    name: Syntax and regression checks
    runs-on: ubuntu-latest

    strategy:
      matrix:
        python-version: ["3.11", "3.12", "3.13"]

    steps:
      - uses: actions/checkout@v6

      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: ${{ matrix.python-version }}

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt

      - name: Check syntax on tracked Python files
        run: python -m py_compile $(git ls-files '*.py')

      - name: Verify Garmt headers present
        run: |
          echo "Checking Garmt headers (Filename / Version / Objective)..."
          failed=0
          while IFS= read -r f; do
            if ! head -10 "$f" | grep -q "Filename:"; then
              echo "MISSING Garmt header: $f"
              failed=1
            fi
          done < <(git ls-files '*.py' | grep -v '__init__')
          if [ "$failed" -eq 1 ]; then
            echo "One or more files missing Garmt header."
            exit 1
          fi
          echo "All headers present."

      - name: Run regression tests
        run: |
          for t in dev/test_*.py; do
            echo "Running $t"
            python "$t"
          done