Improve background data migration generator template #519

	name: Test
	on: [push, pull_request]

	jobs:
	# Run the linter first for rapid feedback if some trivial stylistic issues
	# slipped through the cracks.
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: 3.3
	bundler-cache: true
	- run: bundle exec rubocop

	test:
	needs: lint
	runs-on: ubuntu-latest
	services:
	postgres:
	image: postgres
	env:
	POSTGRES_DB: online_migrations_test
	POSTGRES_PASSWORD: postgres
	options: >-
	--health-cmd pg_isready
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	ports:
	- 5432:5432
	strategy:
	matrix:
	include:
	- ruby-version: 2.7
	gemfile: activerecord_61.gemfile
	- ruby-version: 2.7
	gemfile: activerecord_70.gemfile
	- ruby-version: 2.7
	gemfile: activerecord_71.gemfile

	# Test against latest versions just in case.
	- ruby-version: 3.3
	gemfile: activerecord_head.gemfile
	env:
	BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}
	steps:
	- uses: actions/checkout@v3
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby-version }}
	bundler-cache: true
	- name: Prepare PostgreSQL shards
	run: \|
	createdb online_migrations_shard_one
	createdb online_migrations_shard_two
	env:
	PGHOST: localhost
	PGUSER: postgres
	PGPASSWORD: postgres
	- name: Run the test suite
	run: bundle exec rake test

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