README.md: add logo, license badge and unit tests badge #4

	name: test

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

	# 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:
	run-tests:
	runs-on: ubuntu-latest
	timeout-minutes: 1

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v4

	- name: Run some diagnostics
	run: \|
	echo "Bash version: ${BASH_VERSION}"
	echo "GITHUB_WORKSPACE: ${GITHUB_WORKSPACE}"
	grep --version
	sed --version
	uniq --version
	sort --version
	timeout --version
	git --version
	echo "pwd: ${PWD}"
	echo "ls:"
	ls -la

	- name: Install unbuffer command (part of expect package)
	run: sudo apt-get install -y expect

	- name: Run tests
	run: \|
	./run-tests.sh

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