Fix Enumerator.product.size. #158

	name: CI

	on: [pull_request]

	jobs:
	tests:
	name: >-
	Specs \| ${{ matrix.ruby }}
	runs-on: ${{ matrix.os }}-latest
	env:
	# See https://github.com/tmm1/test-queue#environment-variables
	TEST_QUEUE_WORKERS: 2
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu]
	ruby: [2.1, 2.3, 2.4, 2.5, 2.6, 2.7, "3.0", 3.1, 3.2, 3.3, head]
	steps:
	- name: checkout
	uses: actions/checkout@v2
	- name: set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	- name: install dependencies
	run: bundle install --jobs 3 --retry 3
	- name: install specs
	run: git submodule update --init --recursive
	- name: spec
	run: bundle exec rake test all_spec
	internal_investigation:
	name: >-
	Coding Style
	runs-on: ${{ matrix.os }}-latest
	env:
	TEST_QUEUE_WORKERS: 2
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu]
	ruby: [2.7]
	steps:
	- name: checkout
	uses: actions/checkout@v2
	- name: set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	- name: install dependencies
	run: bundle install --jobs 3 --retry 3
	- name: internal investigation
	run: bundle exec rubocop

Provide feedback