test.yml

# This is a basic workflow to help you get started with Actions

name: CI

# Controls when the action will run. 
on:
  # Triggers the workflow on push or pull request events but only for the master branch
  # push:
  #   branches: [ master ]
  # pull_request:
  #   branches: [ master ]

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  build:
    runs-on: ubuntu-latest # Don't care about the runner version but it's required
    container:
      image: ubuntu:20.04

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
        # sudo is invoked by the install script.
      - name: Install sudo
        run: apt-get update && apt-get --assume-yes install sudo

      - name: Set up BATS
        uses: mig4/setup-bats@v1
        with:
          bats-version: 1.2.1

      - name: Check out code
        uses: actions/checkout@v2

      # https://www.yegor256.com/2014/08/29/docker-non-root.html
      - name: Add non-root user
        run: |
          adduser --disabled-password --gecos '' r
          adduser r sudo
          echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers

          chown --recursive r:r .

        # bats-assert depends on bats-support
        # wget ships with desktop Ubuntu
        # unzip ships with desktop Ubuntu
      - name: Add bats-assert
        shell: su r {0}
        run: |
          sudo apt-get install --assume-yes wget unzip
          ./add_bats_assertions.sh

      - name: Run install script
        shell: su r {0}
        run: |
          cd scripts
          sudo -E ./install.sh

      # In a real interactive session the PATH is set automatically in the
      # expected way by sourcing bashrc. But Github Actions requires this
      # syntax, and it takes effect only on subsequent steps. 
      - name: Set PATH the Github way
        shell: su r {0}
        run: |
          echo "${HOME}/.local/bin" |
          sudo tee --append "${GITHUB_PATH}" |
          xargs echo Added to path

      - name: Test commands
        shell: su r {0}
        run: |
          bats --tap test.bats

      - name: Run install script again (test idempotency)
        shell: su r {0}
        run: |
          cd scripts
          ./install.sh