name: ubuntu
on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - '*'
jobs:
  latest:
    strategy:
      matrix:
        os: [ubuntu-latest, ubuntu-16.04]
        test_task: [ "check", "test-bundler", "test-bundled-gems" ]
      fail-fast: false
    runs-on: ${{ matrix.os }}
    if: "!contains(github.event.head_commit.message, '[ci skip]')"
    steps:
      - run: env | sort
      - name: Dump GitHub context
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"
      - name: Dump job context
        env:
          JOB_CONTEXT: ${{ toJson(job) }}
        run: echo "$JOB_CONTEXT"
      - name: Dump steps context
        env:
          STEPS_CONTEXT: ${{ toJson(steps) }}
        run: echo "$STEPS_CONTEXT"
      - name: Dump runner context
        env:
          RUNNER_CONTEXT: ${{ toJson(runner) }}
        run: echo "$RUNNER_CONTEXT"
      - name: Dump strategy context
        env:
          STRATEGY_CONTEXT: ${{ toJson(strategy) }}
        run: echo "$STRATEGY_CONTEXT"
      - name: Dump matrix context
        env:
          MATRIX_CONTEXT: ${{ toJson(matrix) }}
        run: echo "$MATRIX_CONTEXT"

      - name: Install libraries
        run: |
          set -x
          sudo apt-get update -q
          sudo apt-get install --no-install-recommends -q -y build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev bison autoconf ruby
      # Not using official actions/checkout because it's unstable and sometimes doesn't work for a fork.
      - name: Checkout ruby/ruby
        run: |
          git clone --depth=50 https://github.com/ruby/ruby src
          git -C src reset --hard "$GITHUB_SHA"
        if: github.event_name == 'push'
      - name: Checkout a pull request
        run: |
          git clone --depth=50 "--branch=$GITHUB_BRANCH" "https://github.com/${GITHUB_REPO}" src
          git -C src reset --hard "$GITHUB_REV"
        env:
          GITHUB_REV: ${{ github.event.pull_request.head.sha }}
          GITHUB_BRANCH: ${{ github.event.pull_request.head.ref }}
          GITHUB_REPO: ${{ github.event.pull_request.head.repo.full_name }}
        if: github.event_name == 'pull_request'
      - name: Fixed world writable dirs
        run: |
          chmod go-w $HOME
          sudo chmod -R go-w /usr/share
      - name: Set ENV
        run: |
          echo '##[set-env name=JOBS]'-j$((1 + $(nproc --all)))
      - name: Autoconf
        run: cd src && exec autoconf
      - name: configure
        run: |
          mkdir build
          cd build
          ../src/configure -C --disable-install-doc
      - name: Make
        run: make -C build $JOBS
      - name: Tests
        run: make -C build $JOBS -s ${{ matrix.test_task }}
        env:
          MSPECOPT: "-ff" # not using `-j` because sometimes `mspec -j` silently dies
          RUBY_TESTOPTS: "-q --tty=no"
          # Remove minitest from TEST_BUNDLED_GEMS_ALLOW_FAILURES if https://github.com/seattlerb/minitest/pull/798 is resolved
          TEST_BUNDLED_GEMS_ALLOW_FAILURES: "minitest"
      - name: Leaked Globals
        run: make -C build -s leaked-globals
      - name: Debug GitHub context
        run: echo "$GITHUB_CONTEXT"
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        if: failure() && github.event_name == 'push'
      - uses: k0kubun/action-slack@v2.0.0
        with:
          payload: |
            {
              "attachments": [{
                "text": "${{ job.status}}: <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ matrix.os }} / ${{ matrix.test_task }}> " +
                        "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
                        "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
                "color": "danger"
              }]
            }
        env:
          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
        if: failure() && github.event_name == 'push'