Implement yieldto to avoid 'nested coroutine' problems #397

	name: "Unix build"

	concurrency:
	# for PR's cancel the running task, if another commit is pushed
	group: ${{ github.workflow }} ${{ github.ref }}
	cancel-in-progress: ${{ github.event_name == 'pull_request' }}

	on:
	# build on PR and push-to-master. This works for short-lived branches, and saves
	# CPU cycles on duplicated tests.
	# For long-lived branches that diverge, you'll want to run on all pushes, not
	# just on push-to-master.
	pull_request: {}
	push:
	branches:
	- master

	jobs:
	test:
	runs-on: ubuntu-20.04

	strategy:
	fail-fast: false
	matrix:
	luaVersion: ["5.1", "5.2", "5.3", "5.4", "luajit-2.1.0-beta3"]

	steps:
	- uses: actions/checkout@v4

	- uses: leafo/gh-actions-lua@v10
	with:
	luaVersion: ${{ matrix.luaVersion }}

	- uses: leafo/gh-actions-luarocks@v4

	- name: dependencies
	run: \|
	luarocks install luacov-coveralls
	luarocks install luasec
	luarocks install luasystem

	- name: generate test certificates
	run: \|
	make certs

	- name: build
	run: \|
	luarocks make

	- name: test
	run: \|
	make coverage

	- name: Report test coverage
	if: success()
	continue-on-error: true
	run: luacov-coveralls
	env:
	COVERALLS_REPO_TOKEN: ${{ github.token }}

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