feat: cache test workflow #3

	name: Test cache

	on:
	pull_request:
	workflow_dispatch:

	jobs:
	test-cache:
	strategy:
	fail-fast: false
	matrix:
	os:
	- macos-13 # x64
	- macos-latest # arm64
	- ubuntu-latest
	- windows-latest

	runs-on: ${{ matrix.os }}

	steps:
	- name: Checkout
	uses: actions/checkout@v4

	# This might hit cache

	- name: Check action itself (attempt 1)
	id: attempt_1
	uses: ./
	with:
	crates: gprbuild hello
	prefix: alire_prefix

	# We want to later on test the pristine prefix restored from cache
	- name: Clean prefix for next attempt
	if: steps.attempt_1.outputs.cache_hit != 'true'
	shell: bash
	run: rm -rf alire_prefix

	# Next attemp should hit cache given the previous run

	- name: Check action itself (attempt 2)
	if: steps.attempt_1.outputs.cache_hit != 'true'
	id: attempt_2
	uses: ./
	with:
	crates: gprbuild hello
	prefix: alire_prefix

	- name: Diagnose cache use
	shell: bash
	run: \|
	echo "Caching attempt 1: ${{steps.attempt_1.outputs.cache_hit}}"
	echo "Caching attempt 2: ${{steps.attempt_2.outputs.cache_hit}}"

	# Fail if no cache was hit
	- if: (steps.attempt_1.outputs.cache_hit != 'true') && (steps.attempt_2.outputs.cache_hit != 'true')
	uses: actions/github-script@v3
	with:
	script: \|
	core.setFailed('FAIL: No cache hit observed')

	- name: Run check
	shell: bash
	run: \|
	which gprbuild && \
	gprbuild --version && \
	hello \| grep "Hello, world!"

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