name: linux tests

on:
  push:
    branches:
      - develop
      - releases/**
  pull_request:
    branches:
      - develop
      - releases/**
jobs:
  # Validate that the code can be run on all the Python versions
  # supported by Spack
  validate:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - name: Install Python Packages
      run: |
        pip install --upgrade pip
        pip install --upgrade vermin
    - name: vermin (Spack's Core)
      run: vermin --backport argparse --violations --backport typing -t=2.6- -t=3.5- -vvv lib/spack/spack/ lib/spack/llnl/ bin/
    - name: vermin (Repositories)
      run: vermin --backport argparse --violations --backport typing -t=2.6- -t=3.5- -vvv var/spack/repos
  # Run style checks on the files that have been changed
  style:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - name: Install Python packages
      run: |
        pip install --upgrade pip six setuptools types-six
    - name: Setup git configuration
      run: |
        # Need this for the git tests to succeed.
        git --version
        . .github/workflows/setup_git.sh
    - name: Run style tests
      run: |
          share/spack/qa/run-style-tests
  # Build the documentation
  documentation:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - name: Install System packages
      run: |
        sudo apt-get -y update
        sudo apt-get install -y coreutils ninja-build graphviz
    - name: Install Python packages
      run: |
        pip install --upgrade pip six setuptools
        pip install --upgrade -r lib/spack/docs/requirements.txt
    - name: Build documentation
      run: |
          share/spack/qa/run-doc-tests

  # Check which files have been updated by the PR
  changes:
    runs-on: ubuntu-latest
    # Set job outputs to values from filter step
    outputs:
      core: ${{ steps.filter.outputs.core }}
      packages: ${{ steps.filter.outputs.packages }}
      with_coverage: ${{ steps.coverage.outputs.with_coverage }}
    steps:
    - uses: actions/checkout@v2
      if: ${{ github.event_name == 'push' }}
      with:
        fetch-depth: 0
    # For pull requests it's not necessary to checkout the code
    - uses: dorny/paths-filter@v2
      id: filter
      with:
        # See https://github.com/dorny/paths-filter/issues/56 for the syntax used below
        filters: |
          core:
          - './!(var/**)/**'
          packages:
          - 'var/**'
    # Some links for easier reference:
    #
    # "github" context: https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#github-context
    # job outputs: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#jobsjob_idoutputs
    # setting environment variables from earlier steps: https://docs.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-environment-variable
    #
    - id: coverage
      # Run the subsequent jobs with coverage if core has been modified,
      # regardless of whether this is a pull request or a push to a branch
      run: |
        echo Core changes: ${{ steps.filter.outputs.core }}
        echo Event name: ${{ github.event_name }}
        if [ "${{ steps.filter.outputs.core }}" == "true" ]
        then
          echo "::set-output name=with_coverage::true"
        else
          echo "::set-output name=with_coverage::false"
        fi

  # Run unit tests with different configurations on linux
  unittests:
    needs: [ validate, style, documentation, changes ]
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
        concretizer: ['original', 'clingo']
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: Install System packages
      run: |
          sudo apt-get -y update
          # Needed for unit tests
          sudo apt-get -y install \
              coreutils cvs gfortran graphviz gnupg2 mercurial ninja-build \
              patchelf cmake bison libbison-dev kcov
    - name: Install Python packages
      run: |
          pip install --upgrade pip six setuptools codecov coverage[toml]
          # ensure style checks are not skipped in unit tests for python >= 3.6
          # note that true/false (i.e., 1/0) are opposite in conditions in python and bash
          if python -c 'import sys; sys.exit(not sys.version_info >= (3, 6))'; then
              pip install --upgrade flake8 isort>=4.3.5 mypy>=0.900 black
          fi
    - name: Setup git configuration
      run: |
          # Need this for the git tests to succeed.
          git --version
          . .github/workflows/setup_git.sh
    - name: Bootstrap clingo
      if: ${{ matrix.concretizer == 'clingo' }}
      env:
          SPACK_PYTHON: python
      run: |
          . share/spack/setup-env.sh
          spack bootstrap untrust spack-install
          spack -v solve zlib
    - name: Run unit tests (full suite with coverage)
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      env:
          SPACK_PYTHON: python
          COVERAGE: true
          SPACK_TEST_SOLVER: ${{ matrix.concretizer }}
      run: |
          share/spack/qa/run-unit-tests
          coverage combine
          coverage xml
    - name: Run unit tests (reduced suite without coverage)
      if: ${{ needs.changes.outputs.with_coverage == 'false' }}
      env:
          SPACK_PYTHON: python
          ONLY_PACKAGES: true
          SPACK_TEST_SOLVER: ${{ matrix.concretizer }}
      run: |
          share/spack/qa/run-unit-tests
    - uses: codecov/codecov-action@v2.0.3
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      with:
        flags: unittests,linux,${{ matrix.concretizer }}
  # Test shell integration
  shell:
    needs: [ validate, style, documentation, changes ]
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - name: Install System packages
      run: |
          sudo apt-get -y update
          # Needed for shell tests
          sudo apt-get install -y coreutils kcov csh zsh tcsh fish dash bash
    - name: Install Python packages
      run: |
          pip install --upgrade pip six setuptools codecov coverage[toml]
    - name: Setup git configuration
      run: |
          # Need this for the git tests to succeed.
          git --version
          . .github/workflows/setup_git.sh
    - name: Run shell tests (without coverage)
      if: ${{ needs.changes.outputs.with_coverage == 'false' }}
      run: |
          share/spack/qa/run-shell-tests
    - name: Run shell tests (with coverage)
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      env:
          COVERAGE: true
      run: |
          share/spack/qa/run-shell-tests
    - uses: codecov/codecov-action@v2.0.3
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      with:
        flags: shelltests,linux
  # Test for Python2.6 run on Centos 6
  centos6:
    needs: [ validate, style, documentation, changes ]
    runs-on: ubuntu-latest
    container: spack/github-actions:centos6
    steps:
    - name: Run unit tests (full test-suite)
      # The CentOS 6 container doesn't run with coverage, but
      # under the same conditions it runs the full test suite
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      env:
          HOME: /home/spack-test
      run: |
          whoami && echo $HOME && cd $HOME
          git clone https://github.com/spack/spack.git && cd spack
          git fetch origin ${{ github.ref }}:test-branch
          git checkout test-branch
          share/spack/qa/run-unit-tests
    - name: Run unit tests (only package tests)
      if: ${{ needs.changes.outputs.with_coverage == 'false' }}
      env:
          HOME: /home/spack-test
          ONLY_PACKAGES: true
      run: |
          whoami && echo $HOME && cd $HOME
          git clone https://github.com/spack/spack.git && cd spack
          git fetch origin ${{ github.ref }}:test-branch
          git checkout test-branch
          share/spack/qa/run-unit-tests

  # Test RHEL8 UBI with platform Python. This job is run
  # only on PRs modifying core Spack
  rhel8-platform-python:
    needs: [ validate, style, documentation, changes ]
    runs-on: ubuntu-latest
    if: ${{ needs.changes.outputs.with_coverage == 'true' }}
    container: registry.access.redhat.com/ubi8/ubi
    steps:
    - name: Install dependencies
      run: |
          dnf install -y \
              bzip2 curl file gcc-c++ gcc gcc-gfortran git gnupg2 gzip \
              make patch tcl unzip which xz
    - uses: actions/checkout@v2
    - name: Setup repo and non-root user
      run: |
          git --version
          git fetch --unshallow
          . .github/workflows/setup_git.sh
          useradd spack-test
          chown -R spack-test .
    - name: Run unit tests
      shell: runuser -u spack-test -- bash {0}
      run: |
          source share/spack/setup-env.sh
          spack unit-test -k 'not cvs and not svn and not hg' -x --verbose
  # Test for the clingo based solver (using clingo-cffi)
  clingo-cffi:
    needs: [ validate, style, documentation, changes ]
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - uses: actions/setup-python@v2
      with:
        python-version: 3.9
    - name: Install System packages
      run: |
          sudo apt-get -y update
          # Needed for unit tests
          sudo apt-get -y install \
              coreutils cvs gfortran graphviz gnupg2 mercurial ninja-build \
              patchelf kcov
    - name: Install Python packages
      run: |
          pip install --upgrade pip six setuptools codecov coverage[toml] clingo
    - name: Setup git configuration
      run: |
          # Need this for the git tests to succeed.
          git --version
          . .github/workflows/setup_git.sh
    - name: Run unit tests (full suite with coverage)
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      env:
          COVERAGE: true
          SPACK_TEST_SOLVER: clingo
      run: |
          share/spack/qa/run-unit-tests
          coverage combine
          coverage xml
    - name: Run unit tests (reduced suite without coverage)
      if: ${{ needs.changes.outputs.with_coverage == 'false' }}
      env:
          ONLY_PACKAGES: true
          SPACK_TEST_SOLVER: clingo
      run: |
          share/spack/qa/run-unit-tests
    - uses: codecov/codecov-action@v2.0.3
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      with:
        flags: unittests,linux,clingo
  # Run unit tests on MacOS
  build:
    needs: [ validate, style, documentation, changes ]
    runs-on: macos-latest
    strategy:
      matrix:
        python-version: [3.8]
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: Install Python packages
      run: |
          pip install --upgrade pip six setuptools
          pip install --upgrade codecov coverage[toml]
    - name: Setup Homebrew packages
      run: |
        brew install dash fish gcc gnupg2 kcov
    - name: Run unit tests
      env:
        SPACK_TEST_SOLVER: clingo
      run: |
        git --version
        . .github/workflows/setup_git.sh
        . share/spack/setup-env.sh
        $(which spack) bootstrap untrust spack-install
        $(which spack) solve zlib
        if [ "${{ needs.changes.outputs.with_coverage }}" == "true" ]
        then
          coverage run $(which spack) unit-test -x
          coverage combine
          coverage xml
          # Delete the symlink going from ./lib/spack/docs/_spack_root back to
          # the initial directory, since it causes ELOOP errors with codecov/actions@2
          rm lib/spack/docs/_spack_root
        else
          echo "ONLY PACKAGE RECIPES CHANGED [skipping coverage]"
          $(which spack) unit-test -x -m "not maybeslow" -k "package_sanity"
        fi
    - uses: codecov/codecov-action@v2.0.3
      if: ${{ needs.changes.outputs.with_coverage == 'true' }}
      with:
        files: ./coverage.xml
        flags: unittests,macos