name: Tests

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  run_tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12"]

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

    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v5
      with:
        python-version: ${{ matrix.python-version }}

    - name: Cache pip dependencies
      uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key: ${{ runner.os }}-pip-${{ matrix.python-version }}-${{ hashFiles('**/requirements-test.txt', '**/pyproject.toml') }}
        restore-keys: |
          ${{ runner.os }}-pip-${{ matrix.python-version }}-
          ${{ runner.os }}-pip-

    - name: Cache system dependencies
      uses: actions/cache@v4
      with:
        path: /var/cache/apt
        key: ${{ runner.os }}-apt-${{ hashFiles('.github/workflows/tests.yml') }}
        restore-keys: |
          ${{ runner.os }}-apt-

    - name: Install system dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y libopenmpi-dev

    - name: Install Python dependencies
      run: |
        python -m pip install --upgrade pip setuptools wheel
        # Install JAX first as it's a key dependency
        pip install jax
        # Install build dependencies
        pip install setuptools cython mpi4py
        # Install test requirements with no-build-isolation for faster builds
        pip install -r requirements-test.txt --no-build-isolation
        # Install additional test dependencies
        pip install pytest diffrax
        # Install package in development mode
        pip install -e .
        echo "numpy version installed:"
        python -c "import numpy; print(numpy.__version__)"

    - name: Run Single Device Tests
      run: |
        cd tests
        pytest -v -m "not distributed"

    - name: Run Distributed tests
      run: |
        pytest -v tests/test_distributed_pm.py