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name: CI

on:
  push:
    branches: [main]
    tags:
      # Tags for all potential release numbers till 2030.
      - "2[0-9].[0-3]" # 20.0 -> 29.3
      - "2[0-9].[0-3].[0-9]+" # 20.0.0 -> 29.3.[0-9]+
  pull_request:
  schedule:
    - cron: 0 0 * * MON # Run every Monday at 00:00 UTC

jobs:
  determine-changes:
    runs-on: ubuntu-latest
    outputs:
      tests: ${{ steps.filter.outputs.tests }}
      vendoring: ${{ steps.filter.outputs.vendoring }}
    steps:
      # For pull requests it's not necessary to checkout the code
      - uses: dorny/paths-filter@v2
        id: filter
        with:
          filters: |
            vendoring:
              # Anything that's touching "vendored code"
              - "src/pip/_vendor/**"
              - "pyproject.toml"
            tests:
              # Anything that's touching testable stuff
              - ".github/workflows/ci.yml"
              - "src/**"
              - "tests/**"
        if: github.event_name == 'pull_request'

  pre-commit:
    name: pre-commit
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
      - uses: pre-commit/action@v2.0.0
        with:
          extra_args: --all-files --hook-stage=manual

  packaging:
    name: packaging
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
      - name: Set up git credentials
        run: |
          git config --global user.email "pypa-dev@googlegroups.com"
          git config --global user.name "pip"

      - run: pip install nox
      - run: nox -s prepare-release -- 99.9
      - run: nox -s build-release -- 99.9

  vendoring:
    name: vendoring
    runs-on: ubuntu-latest

    needs: [determine-changes]
    if: >-
      needs.determine-changes.outputs.vendoring == 'true' ||
      github.event_name != 'pull_request'

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2

      - run: pip install vendoring
      - run: vendoring sync . --verbose
      - run: git diff --exit-code

  tests-unix:
    name: tests / ${{ matrix.python }} / ${{ matrix.os }}
    runs-on: ${{ matrix.os }}-latest

    needs: [pre-commit, packaging, determine-changes]
    if: >-
      needs.determine-changes.outputs.tests == 'true' ||
      github.event_name != 'pull_request'

    strategy:
      fail-fast: true
      matrix:
        os: [Ubuntu, MacOS]
        python:
          - 3.6
          - 3.7
          - 3.8
          - 3.9
          - 3.10

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python }}

      - run: pip install tox 'virtualenv<20'

      # Main check
      - name: Run unit tests
        run: >-
          tox -e py --
          -m unit
          --verbose --numprocesses auto --showlocals
      - name: Run integration tests
        run: >-
          tox -e py --
          -m integration
          --verbose --numprocesses auto --showlocals
          --durations=5

  tests-windows:
    name: tests / ${{ matrix.python }} / ${{ matrix.os }} / ${{ matrix.group }}
    runs-on: ${{ matrix.os }}-latest

    needs: [pre-commit, packaging, determine-changes]
    if: >-
      needs.determine-changes.outputs.tests == 'true' ||
      github.event_name != 'pull_request'

    strategy:
      fail-fast: true
      matrix:
        os: [Windows]
        python:
          - 3.6
          # Commented out, since Windows tests are expensively slow.
          # - 3.7
          # - 3.8
          - 3.9
          - 3.10
        group: [1, 2]

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python }}

      # We use a RAMDisk on Windows, since filesystem IO is a big slowdown
      # for our tests.
      - name: Create a RAMDisk
        run: ./tools/ci/New-RAMDisk.ps1 -Drive R -Size 1GB

      - name: Setup RAMDisk permissions
        run: |
          mkdir R:\Temp
          $acl = Get-Acl "R:\Temp"
          $rule = New-Object System.Security.AccessControl.FileSystemAccessRule(
              "Everyone", "FullControl", "ContainerInherit,ObjectInherit", "None", "Allow"
          )
          $acl.AddAccessRule($rule)
          Set-Acl "R:\Temp" $acl

      - run: pip install tox 'virtualenv<20'
        env:
          TEMP: "R:\\Temp"

      # Main check
      - name: Run unit tests
        if: matrix.group == 1
        run: >-
          tox -e py --
          -m unit
          --verbose --numprocesses auto --showlocals
        env:
          TEMP: "R:\\Temp"

      - name: Run integration tests (group 1)
        if: matrix.group == 1
        run: >-
          tox -e py --
          -m integration -k "not test_install"
          --verbose --numprocesses auto --showlocals
        env:
          TEMP: "R:\\Temp"

      - name: Run integration tests (group 2)
        if: matrix.group == 2
        run: >-
          tox -e py --
          -m integration -k "test_install"
          --verbose --numprocesses auto --showlocals
        env:
          TEMP: "R:\\Temp"