ci: add downgrade test #62

	name: Run tests
	on:
	pull_request:
	branches:
	- 'master'
	- 'release-*'
	push:
	branches:
	- 'master'
	- 'release-*'
	tags:
	- '*'
	defaults:
	run:
	shell: bash
	jobs:
	test:
	runs-on: ${{ matrix.os }}
	timeout-minutes: 60
	strategy:
	fail-fast: false
	matrix:
	os:
	- ubuntu-latest
	- macOS-latest
	- windows-latest
	julia-arch:
	- 'x64'
	- 'x86'
	julia-version:
	- '1.6'
	- 'nightly'
	exclude:
	- os: macOS-latest
	julia-arch: x86
	steps:
	- uses: actions/checkout@v4
	- uses: julia-actions/setup-julia@latest
	with:
	version: ${{ matrix.julia-version }}
	# Alter the UUID so that we test this package instead of loading
	# the version that is already built into a Julia's system image.
	- run: julia --color=yes .ci/test_and_change_uuid.jl
	- uses: julia-actions/julia-buildpkg@v1
	- uses: julia-actions/julia-runtest@v1
	- uses: julia-actions/julia-processcoverage@v1
	env:
	JULIA_PKG_SERVER: ${{ matrix.pkg-server }}
	- uses: codecov/codecov-action@v4
	with:
	file: lcov.info
	doctests:
	runs-on: ubuntu-latest
	timeout-minutes: 60
	steps:
	- uses: actions/checkout@v4
	with:
	persist-credentials: false
	- uses: julia-actions/setup-julia@v1
	with:
	version: 'nightly'
	- run: julia --color=yes .ci/test_and_change_uuid.jl
	- run: julia --project=docs --color=yes -e 'using Pkg; Pkg.instantiate()'
	- run: julia --project=docs --color=yes -e 'using Pkg; Pkg.develop(PackageSpec(path = pwd()))'
	- name: Run doctests
	run: julia --project=docs --color=yes -e 'import SHA; import Documenter; Documenter.doctest(SHA)'

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