build_and_test.yml

name: Run unit tests

on:
  push:

jobs:
  unit-tests:
    runs-on: ubuntu-20.04
    env:
      OMPI_VERSION: 4.1.5
    steps:

    - uses: actions/checkout@v3

    # We don't want to build openmpi each time this workflow is
    # run. Setup caching of OpenMPI after it is built and installed.
    # See "Caching dependencies to speed up workflows" on the GH
    # actions docs.
    - name: Cache OpenMPI
      id: cache-openmpi
      uses: actions/cache@v2
      with:
        path: openmpi-${{ env.OMPI_VERSION }}/installed
        key: openmpi-${{ env.OMPI_VERSION }}

    - name: Display GCC version number
      run: gcc --version

    - name: Build openmpi
      if: steps.cache-openmpi.outputs.cache-hit != 'true'
      run: |
        wget https://download.open-mpi.org/release/open-mpi/v4.1/openmpi-$OMPI_VERSION.tar.gz
        tar -xf openmpi-$OMPI_VERSION.tar.gz
        cd openmpi-$OMPI_VERSION/ && mkdir installed
        ./configure --prefix=$(pwd)/installed
        make all install

    - name: Update PATH
      run: |
        echo "$GITHUB_WORKSPACE/openmpi-${OMPI_VERSION}/installed/bin" \
          >> $GITHUB_PATH

    - name: Configure build
      run: FC=mpif90 cmake -S . -B build

    - name: Build tests
      run: make -C build

    - name: Run the tests
      run: make -C build test