tests.yml

name: Tests

on:
  push:
    branches:
      - main
  pull_request:

jobs:
  validate:
    name: Validate (${{ matrix.os }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os:
          - macos-latest
          - ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install validation tools (macOS)
        if: runner.os == 'macOS'
        run: |
          brew install bash bats-core shellcheck
          echo "$(brew --prefix bash)/bin" >> "$GITHUB_PATH"

      - name: Install validation tools (Linux)
        if: runner.os == 'Linux'
        run: sudo apt-get install -y bats shellcheck

      - name: Validate repository
        run: ./tests/validate.sh

      - name: Smoke supported runner Bash
        run: |
          bash -c '
            source "$1"
            check_bash_version
          ' bash "$PWD/lib/bash/std/lib_std.sh"

      # Hosted runners do not provide Bash 4.2 directly. The BATS suite covers
      # the lower-bound comparison logic; this macOS smoke exercises the known
      # unsupported system Bash 3.2 path when it is available.
      - name: Smoke unsupported macOS system Bash
        if: runner.os == 'macOS'
        run: |
          if ! /bin/bash -c '((BASH_VERSINFO[0] < 4 || (BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] < 2)))'; then
            echo "/bin/bash is supported on this runner; skipping unsupported-Bash smoke."
            exit 0
          fi

          set +e
          output="$(/bin/bash -c 'source "$1"' bash "$PWD/lib/bash/std/lib_std.sh" 2>&1)"
          status=$?
          set -e

          test "$status" -ne 0
          grep -F "requires Bash 4.2 or higher" <<<"$output"
          ! grep -F "syntax error" <<<"$output"