Tests

Add warning-level ShellCheck profile #134

	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"

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