name: Tests

# gh-84728: "paths-ignore" is not used to skip documentation-only PRs, because
# it prevents to mark a job as mandatory. A PR cannot be merged if a job is
# mandatory but not scheduled because of "paths-ignore".
on:
  workflow_dispatch:
  push:
    branches:
    - 'main'
    - '3.11'
    - '3.10'
    - '3.9'
    - '3.8'
  pull_request:
    branches:
    - 'main'
    - '3.11'
    - '3.10'
    - '3.9'
    - '3.8'

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}-reusable
  cancel-in-progress: true

jobs:
  check_source:
    name: 'Check for source changes'
    runs-on: ubuntu-latest
    timeout-minutes: 10
    outputs:
      run-docs: ${{ steps.docs-changes.outputs.run-docs || false }}
      run_tests: ${{ steps.check.outputs.run_tests }}
      run_ssl_tests: ${{ steps.check.outputs.run_ssl_tests }}
      config_hash: ${{ steps.config_hash.outputs.hash }}
    steps:
      - uses: actions/checkout@v4
      - name: Check for source changes
        id: check
        run: |
          if [ -z "$GITHUB_BASE_REF" ]; then
            echo "run_tests=true" >> $GITHUB_OUTPUT
            echo "run_ssl_tests=true" >> $GITHUB_OUTPUT
          else
            git fetch origin $GITHUB_BASE_REF --depth=1
            # git diff "origin/$GITHUB_BASE_REF..." (3 dots) may be more
            # reliable than git diff "origin/$GITHUB_BASE_REF.." (2 dots),
            # but it requires to download more commits (this job uses
            # "git fetch --depth=1").
            #
            # git diff "origin/$GITHUB_BASE_REF..." (3 dots) works with Git
            # 2.26, but Git 2.28 is stricter and fails with "no merge base".
            #
            # git diff "origin/$GITHUB_BASE_REF.." (2 dots) should be enough on
            # GitHub, since GitHub starts by merging origin/$GITHUB_BASE_REF
            # into the PR branch anyway.
            #
            # https://github.com/python/core-workflow/issues/373
            git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qvE '(\.rst$|^Doc|^Misc|^\.pre-commit-config\.yaml$|\.ruff\.toml$)' && echo "run_tests=true" >> $GITHUB_OUTPUT || true
            git diff --name-only origin/$GITHUB_BASE_REF.. | grep -qE '(ssl|hashlib|hmac|^.github)' && echo "run_ssl_tests=true" >> $GITHUB_OUTPUT || true
          fi
      - name: Compute hash for config cache key
        id: config_hash
        run: |
          echo "hash=${{ hashFiles('configure', 'configure.ac', '.github/workflows/build.yml') }}" >> $GITHUB_OUTPUT
      - name: Get a list of the changed documentation-related files
        if: github.event_name == 'pull_request'
        id: changed-docs-files
        uses: Ana06/get-changed-files@v2.2.0
        with:
          filter: |
            Doc/**
            Misc/**
            .github/workflows/reusable-docs.yml
          format: csv  # works for paths with spaces
      - name: Check for docs changes
        if: >-
          github.event_name == 'pull_request'
          && steps.changed-docs-files.outputs.added_modified_renamed != ''
        id: docs-changes
        run: |
          echo "run-docs=true" >> "${GITHUB_OUTPUT}"

  check-docs:
    name: Docs
    needs: check_source
    if: fromJSON(needs.check_source.outputs.run-docs)
    uses: ./.github/workflows/reusable-docs.yml

  check_abi:
    name: 'Check if the ABI has changed'
    runs-on: ubuntu-20.04
    needs: check_source
    if: needs.check_source.outputs.run_tests == 'true'
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v4
      - name: Install dependencies
        run: |
            sudo ./.github/workflows/posix-deps-apt.sh
            sudo apt-get install -yq abigail-tools
      - name: Build CPython
        env:
          CFLAGS: -g3 -O0
        run: |
          # Build Python with the libpython dynamic library
          ./configure --enable-shared
          make -j4
      - name: Check for changes in the ABI
        id: check
        run: |
          if ! make check-abidump; then
            echo "Generated ABI file is not up to date."
            echo "Please add the release manager of this branch as a reviewer of this PR."
            echo ""
            echo "The up to date ABI file should be attached to this build as an artifact."
            echo ""
            echo "To learn more about this check: https://devguide.python.org/setup/#regenerate-the-abi-dump"
            echo ""
            exit 1
          fi
      - name: Generate updated ABI files
        if: ${{ failure() && steps.check.conclusion == 'failure' }}
        run: |
          make regen-abidump
      - uses: actions/upload-artifact@v3
        name: Publish updated ABI files
        if: ${{ failure() && steps.check.conclusion == 'failure' }}
        with:
          name: abi-data
          path: ./Doc/data/*.abi

  check_generated_files:
    name: 'Check if generated files are up to date'
    runs-on: ubuntu-latest
    timeout-minutes: 60
    needs: check_source
    if: needs.check_source.outputs.run_tests == 'true'
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v4
        with:
          python-version: '3.x'
      - name: Restore config.cache
        uses: actions/cache@v3
        with:
          path: config.cache
          key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}-${{ env.pythonLocation }}
      - name: Install Dependencies
        run: sudo ./.github/workflows/posix-deps-apt.sh
      - name: Add ccache to PATH
        run: echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
      - name: Configure ccache action
        uses: hendrikmuhs/ccache-action@v1.2
        with:
          save: false
      - name: Check Autoconf version 2.69 and aclocal 1.16.3
        run: |
          grep "Generated by GNU Autoconf 2.69" configure
          grep "aclocal 1.16.3" aclocal.m4
          grep -q "runstatedir" configure
          grep -q "PKG_PROG_PKG_CONFIG" aclocal.m4
      - name: Configure CPython
        run: |
          # Build Python with the libpython dynamic library
          ./configure --config-cache --with-pydebug --enable-shared
      - name: Regenerate autoconf files with container image
        run: make regen-configure
      - name: Build CPython
        run: |
          # Deepfreeze will usually cause global objects to be added or removed,
          # so we run it before regen-global-objects gets rum (in regen-all).
          make regen-deepfreeze
          make -j4 regen-all
          make regen-stdlib-module-names
      - name: Check for changes
        run: |
          git add -u
          changes=$(git status --porcelain)
          # Check for changes in regenerated files
          if test -n "$changes"; then
            echo "Generated files not up to date."
            echo "Perhaps you forgot to run make regen-all or build.bat --regen. ;)"
            echo "configure files must be regenerated with a specific version of autoconf."
            echo "$changes"
            echo ""
            git diff --staged || true
            exit 1
          fi
      - name: Check exported libpython symbols
        run: make smelly
      - name: Check limited ABI symbols
        run: make check-limited-abi

  build_windows:
    name: 'Windows'
    needs: check_source
    if: needs.check_source.outputs.run_tests == 'true'
    uses: ./.github/workflows/reusable-windows.yml

  build_macos:
    name: 'macOS'
    needs: check_source
    if: needs.check_source.outputs.run_tests == 'true'
    uses: ./.github/workflows/reusable-macos.yml
    with:
      config_hash: ${{ needs.check_source.outputs.config_hash }}

  build_ubuntu:
    name: 'Ubuntu'
    needs: check_source
    if: needs.check_source.outputs.run_tests == 'true'
    uses: ./.github/workflows/reusable-ubuntu.yml
    with:
      config_hash: ${{ needs.check_source.outputs.config_hash }}
      options: |
        ../cpython-ro-srcdir/configure \
          --config-cache \
          --with-pydebug \
          --with-openssl=$OPENSSL_DIR

  build_ubuntu_ssltests:
    name: 'Ubuntu SSL tests with OpenSSL'
    runs-on: ubuntu-20.04
    timeout-minutes: 60
    needs: check_source
    if: needs.check_source.outputs.run_tests == 'true' && needs.check_source.outputs.run_ssl_tests == 'true'
    strategy:
      fail-fast: false
      matrix:
        openssl_ver: [1.1.1w, 3.0.13, 3.1.5, 3.2.1]
    env:
      OPENSSL_VER: ${{ matrix.openssl_ver }}
      MULTISSL_DIR: ${{ github.workspace }}/multissl
      OPENSSL_DIR: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}
      LD_LIBRARY_PATH: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}/lib
    steps:
    - uses: actions/checkout@v4
    - name: Restore config.cache
      uses: actions/cache@v3
      with:
        path: config.cache
        key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}
    - name: Register gcc problem matcher
      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
    - name: Install Dependencies
      run: sudo ./.github/workflows/posix-deps-apt.sh
    - name: Configure OpenSSL env vars
      run: |
        echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> $GITHUB_ENV
        echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> $GITHUB_ENV
        echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
    - name: 'Restore OpenSSL build'
      id: cache-openssl
      uses: actions/cache@v3
      with:
        path: ./multissl/openssl/${{ env.OPENSSL_VER }}
        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
    - name: Install OpenSSL
      if: steps.cache-openssl.outputs.cache-hit != 'true'
      run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
    - name: Add ccache to PATH
      run: |
        echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
    - name: Configure ccache action
      uses: hendrikmuhs/ccache-action@v1.2
      with:
        save: false
    - name: Configure CPython
      run: ./configure --config-cache --with-pydebug --with-openssl=$OPENSSL_DIR
    - name: Build CPython
      run: make -j4
    - name: Display build info
      run: make pythoninfo
    - name: SSL tests
      run: ./python Lib/test/ssltests.py

  build_asan:
    name: 'Address sanitizer'
    runs-on: ubuntu-20.04
    timeout-minutes: 60
    needs: check_source
    if: needs.check_source.outputs.run_tests == 'true'
    env:
      OPENSSL_VER: 3.0.13
      PYTHONSTRICTEXTENSIONBUILD: 1
      ASAN_OPTIONS: detect_leaks=0:allocator_may_return_null=1:handle_segv=0
    steps:
    - uses: actions/checkout@v4
    - name: Restore config.cache
      uses: actions/cache@v3
      with:
        path: config.cache
        key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}
    - name: Register gcc problem matcher
      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
    - name: Install Dependencies
      run: sudo ./.github/workflows/posix-deps-apt.sh
    - name: Set up GCC-10 for ASAN
      uses: egor-tensin/setup-gcc@v1
      with:
        version: 10
    - name: Configure OpenSSL env vars
      run: |
        echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> $GITHUB_ENV
        echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> $GITHUB_ENV
        echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
    - name: 'Restore OpenSSL build'
      id: cache-openssl
      uses: actions/cache@v3
      with:
        path: ./multissl/openssl/${{ env.OPENSSL_VER }}
        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
    - name: Install OpenSSL
      if: steps.cache-openssl.outputs.cache-hit != 'true'
      run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
    - name: Add ccache to PATH
      run: |
        echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
    - name: Configure ccache action
      uses: hendrikmuhs/ccache-action@v1.2
      with:
        save: ${{ github.event_name == 'push' }}
        max-size: "200M"
    - name: Configure CPython
      run: ./configure --config-cache --with-address-sanitizer --without-pymalloc
    - name: Build CPython
      run: make -j4
    - name: Display build info
      run: make pythoninfo
    - name: Tests
      run: xvfb-run make buildbottest TESTOPTS="-j4 -uall,-cpu"

  all-required-green:  # This job does nothing and is only used for the branch protection
    name: All required checks pass
    if: always()

    needs:
    - check_source  # Transitive dependency, needed to access `run_tests` value
    - check-docs
    - check_generated_files
    - build_macos
    - build_ubuntu
    - build_ubuntu_ssltests
    - build_windows
    - build_asan

    runs-on: ubuntu-latest

    steps:
    - name: Check whether the needed jobs succeeded or failed
      uses: re-actors/alls-green@05ac9388f0aebcb5727afa17fcccfecd6f8ec5fe
      with:
        allowed-failures: >-
          build_macos,
          build_ubuntu_ssltests,
        allowed-skips: >-
          ${{
            !fromJSON(needs.check_source.outputs.run-docs)
            && '
            check-docs,
            '
            || ''
          }}
          ${{
            needs.check_source.outputs.run_tests != 'true'
            && '
            check_generated_files,
            build_macos,
            build_ubuntu,
            build_ubuntu_ssltests,
            build_windows,
            build_asan,
            '
            || ''
          }}
        jobs: ${{ toJSON(needs) }}