Check #50

	name: Check
	on: [ pull_request, push ]
	jobs:
	check:
	runs-on: ubuntu-latest
	# push: always run.
	# pull_request: run only when the PR is submitted from a forked repository, not within this repository.
	if: github.event_name == 'push' \|\| github.event.pull_request.head.repo.full_name != github.repository
	strategy:
	matrix:
	jruby_version:
	- 9.3.10.0
	- 9.4.2.0
	fail-fast: false
	steps:
	- uses: actions/checkout@v3
	- name: Set up OpenJDK 8
	uses: actions/setup-java@v3
	with:
	java-version: 8
	distribution: "temurin"
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: 'jruby-${{ matrix.jruby_version }}'
	bundler-cache: true
	- name: show ruby version
	run: ruby -v
	- name: bundle install
	run: bundle install
	#
	# This step avoids the following error in the JRuby 9.4 test.
	#
	# Gem::LoadError: You have already activated rake 13.0.6,
	# but your Gemfile requires rake 13.1.0. Prepending
	# `bundle exec` to your command may solve this.
	#
	- name: install rake 13.1.0
	run: gem install rake -v 13.1.0
	- name: install embulk.jar
	run: "curl -L -o embulk.jar https://github.com/embulk/embulk/releases/download/v0.10.49/embulk-0.10.49.jar"
	- name: rake test
	run: bundle exec env RUBYOPT="-r ./embulk.jar" rake test

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