test-cache.yml

name: Test cache

on:
  pull_request:
  workflow_dispatch:

jobs:
  test-cache:
    strategy:
      fail-fast: false
      matrix:
        os:
          - macos-12
          - macos-14
          - macos-latest
          - ubuntu-latest
          - windows-latest
        config:
          - version: '2.0.2'
            branch:  ''
          - version: '1.2.2'
            branch:  ''
          - version: 'nightly'
            branch:  ''
          - version: ''
            branch:  'master'
        msys2:
          - true
          - false
        # Exclude combos that do not make sense (we dont have aarm64 for 1.2.2)
        exclude:
          - os: macos-14
            config: {version: '1.2.2', branch: ''}
          - os: macos-latest
            config: {version: '1.2.2', branch: ''}
          - os: windows-latest
            config: {version: '1.2.2'}
            msys2: false # We don't have the option to disable install on 1.2.2

          # We don't exclude the following because this way we verify that the
          # same cache is used for both msys2 true and false on non-Windows.
          # - os: macos-12
          #   msys2: true
          # - os: macos-14
          #   msys2: true
          # - os: macos-stable
          #   msys2: true
          # - os: ubuntu-latest
          #   msys2: true

    runs-on: ${{ matrix.os }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      # This might hit cache

      - name: Check action itself (attempt 1)
        id: attempt_1
        uses: ./
        with:
          version: ${{matrix.config.version}}
          branch:  ${{matrix.config.branch}}
          msys2:   ${{ matrix.msys2 }}

      # Next attemp should hit cache given the previous run

      - name: Check action itself (attempt 2)
        if: steps.attempt_1.outputs.cache_hit != 'true'
        id: attempt_2
        uses: ./
        with:
          version: ${{matrix.config.version}}
          branch:  ${{matrix.config.branch}}
          msys2:   ${{ matrix.msys2 }}

      - name: Diagnose cache use
        shell: bash
        run: |
          echo "Caching attempt 1: ${{steps.attempt_1.outputs.cache_hit}}"
          echo "Caching attempt 2: ${{steps.attempt_2.outputs.cache_hit}}"

      # Fail if no cache was hit
      - if: (steps.attempt_1.outputs.cache_hit != 'true') && (steps.attempt_2.outputs.cache_hit != 'true')
        uses: actions/github-script@v3
        with:
          script: |
              core.setFailed('FAIL: No cache hit observed')

      # Check alr and default toolchains
      - run: alr -n version
      - run: |
          alr -n init --bin alrws
          cd alrws
          alr exec -- gnat --version
          alr exec -- gprbuild --version

      # Verify proper OS
      - run: alr -n version | grep "os:" | grep LINUX
        if: matrix.os == 'ubuntu-latest'
        shell: bash

      - run: alr -n version | grep "os:" | grep MACOS
        if: matrix.os == 'macos-latest'
        shell: bash

      - run: alr -n version | grep "os:" | grep WINDOWS
        if: matrix.os == 'windows-latest'
        shell: bash

      # Verify proper architecture

      - run: alr -n version | grep "arch:" | grep X86_64
        if: runner.arch == 'X64'
        shell: bash

      - run: alr -n version | grep "arch:" | grep AARCH64
        if: runner.arch == 'ARM64'
        shell: bash

      # Verify proper msys2 behavior

      - run: alr -n version | grep "distribution:" | grep MSYS2
        if: matrix.os == 'windows-latest' && matrix.msys2 == true
        shell: bash

      - run: alr -n version | grep "distribution:" | grep UNKNOWN
        if: matrix.os == 'windows-latest' && matrix.msys2 == false
        shell: bash