name: CI

on:
  workflow_dispatch:
  pull_request:
  push:
    branches:
      - master
      - stable
      - v*

jobs:
  standard:
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu, windows, macos]
        python:
        - 2.7
        - 3.5
        - 3.8
        - 3.9-dev
        - pypy2
        - pypy3

        include:
          - os: ubuntu
            python: 3.6
          - os: macos
            python: 3.7

        exclude:
            # Currently 32bit only, and we build 64bit
          - os: windows
            python: pypy2
          - os: windows
            python: pypy3

            # Currently can't build due to warning, fixed in CPython > 3.9b5
          - os: macos
            python: 3.9-dev

            # Currently broken on embed_test
          - os: windows
            python: 3.8
          - os: windows
            python: 3.9-dev

    name: Python ${{ matrix.python }} on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}-latest

    steps:
    - uses: actions/checkout@v2

    - name: Setup Python ${{ matrix.python }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python }}

    - name: Prepare env
      run: python -m pip install -r tests/requirements.txt

    - name: Configure C++11
      shell: bash
      run: >
        cmake --version &&
        cmake -S . -B build
        -DPYBIND11_WERROR=ON
        -DDOWNLOAD_CATCH=ON
        -DCMAKE_CXX_STANDARD=11
        -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")

    - name: Build C++11
      run: cmake --build build -j 2

    - name: Python tests C++11
      run: cmake --build build --target pytest -j 2 -v

    - name: C++11 tests
      run: cmake --build build --target cpptest -j 2 -v

    - name: Interface test C++11
      run: cmake --build build --target test_cmake_build

    - name: Configure C++17
      shell: bash
      run: >
        cmake -S . -B build17
        -DPYBIND17_WERROR=ON
        -DDOWNLOAD_CATCH=ON
        -DCMAKE_CXX_STANDARD=17
        -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")

    - name: Build C++17
      run: cmake --build build17 -j 2

    - name: Python tests C++17
      run: cmake --build build17 --target pytest

    - name: C++17 tests
      run: cmake --build build17 --target cpptest

    - name: Interface test C++17
      run: cmake --build build17 --target test_cmake_build

  clang:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        clang:
          - 3.6
          - 3.7
          - 3.8
          - 3.9
          - 5
          - 7
          - 9
          - dev

    name: Clang ${{ matrix.clang }}
    container: "silkeh/clang:${{ matrix.clang }}"

    steps:
    - uses: actions/checkout@v2

    - name: Add wget and python3
      run: apt-get update && apt-get install -y python3-dev python3-numpy python3-pytest

    - name: Configure
      shell: bash
      run: >
        cmake --version &&
        cmake -S . -B build
        -DPYBIND11_WERROR=ON
        -DDOWNLOAD_CATCH=ON
        -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)")

    - name: Build
      run: cmake --build build -j 2

    - name: Python tests
      run: cmake --build build --target pytest

    - name: C++ tests
      run: cmake --build build --target cpptest

    - name: Interface test
      run: cmake --build build --target test_cmake_build