Fix class/module. Add spec #58

	name: run-tests
	on: [push]
	jobs:
	build_gem:
	name: Build and test ruby extension
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: ruby/setup-ruby-pkgs@v1
	with:
	ruby-version: 3.1.0
	- run: sudo apt-get update && sudo apt-get install -y libopencv-dev
	- run: gem update --system
	- run: gem build libfacedetection.gemspec
	- run: gem install $(ls -1 *.gem)
	# compile_native_gem:
	# name: Compile native gem
	# runs-on: ubuntu-latest
	# strategy:
	# matrix:
	# platform:
	# - x86_64-linux
	# - x86_64-darwin
	# - arm64-darwin
	# - aarch64-linux
	# steps:
	# - uses: actions/checkout@v2

	# - uses: ruby/setup-ruby@v1
	# with:
	# ruby-version: '3.1'
	# bundler-cache: true

	# - uses: oxidize-rb/cross-gem-action@main
	# with:
	# platform: ${{ matrix.platform }}
	# setup: \| # optional
	# env
	# bundle install
	# env: \| # optional
	# RUBY_CC_VERSION=3.1.0:3.0.0:2.7.0
	# CXX_aarch64_unknown_linux_gnu=

	# - uses: actions/download-artifact@v3
	# with:
	# name: cross-gem
	# path: pkg/

	# - name: Display structure of built gems
	# run: ls -R
	# working-directory: pkg/

Provide feedback