Convert from Travis CI to GitHub Actions

.github/workflows/test.yml

@@ -0,0 +1,57 @@
+name: Test
+
+on:
+  pull_request: {}
+  push:
+    branches: master
+
+env:
+  BUNDLE_WITHOUT: development:release
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - "3.1"
+          - "3.0"
+          - "2.7"
+          - "2.6"
+          - "2.5"
+          - "2.4"
+        puppet:
+          - "~> 5.5.10"
+          - "~> 6.5"
+          - "~> 7.0"
+          - "https://github.com/puppetlabs/puppet.git#main"
+        exclude:
+          - ruby: "3.1"
+            puppet: "~> 5.5.10"
+          - ruby: "3.0"
+            puppet: "~> 5.5.10"
+          - ruby: "2.6"
+            puppet: "~> 7.0"
+          - ruby: "2.5"
+            puppet: "~> 7.0"
+          - ruby: "2.4"
+            puppet: "~> 7.0"
+          - ruby: "2.6"
+            puppet: "https://github.com/puppetlabs/puppet.git#main"
+          - ruby: "2.5"
+            puppet: "https://github.com/puppetlabs/puppet.git#main"
+          - ruby: "2.4"
+            puppet: "https://github.com/puppetlabs/puppet.git#main"
+    name: "Ruby ${{ matrix.ruby }} - Puppet ${{ matrix.puppet }}"
+    env:
+      PUPPET_VERSION: ${{ matrix.puppet }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Ruby ${{ matrix.ruby }}
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - name: Run tests
+        run: bundle exec rake

Gemfile

@@ -19,12 +19,12 @@ gemspec
 
 # Override gemspec for CI matrix builds.
 # But only if the environment variable is set
-gem 'puppet', *location_for(ENV['PUPPET_VERSION'] || '>= 5') if ENV['PUPPET_VERSION']
+gem 'puppet', *location_for(ENV['PUPPET_VERSION']) if ENV['PUPPET_VERSION']
 
 group :test do
   gem 'rspec'
 end
 
 group :release do
-  gem 'github_changelog_generator',  :require => false, :git => 'https://github.com/github-changelog-generator/github-changelog-generator'
+  gem 'github_changelog_generator', require: false
 end

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/voxpupuli/puppet-syntax.svg?branch=master)](https://travis-ci.org/voxpupuli/puppet-syntax)
+TODO: [![Build Status](https://travis-ci.org/voxpupuli/puppet-syntax.svg?branch=master)](https://travis-ci.org/voxpupuli/puppet-syntax)
 [![Gem Version](https://img.shields.io/gem/v/puppet-syntax.svg)](https://rubygems.org/gems/puppet-syntax)
 [![Gem Downloads](https://img.shields.io/gem/dt/puppet-syntax.svg)](https://rubygems.org/gems/puppet-syntax)
 
@@ -14,7 +14,7 @@ Puppet::Syntax is supported with:
 - Puppet >= 5.0 that provides the `validate` face.
 - Ruby >= 2.4
 
-For the specific versions that we test against, see the [TravisCI config](.travis.yml).
+For the specific versions that we test against, see the [GitHub Actions workflow](.github/workflows/test.yml).
 
 ## Installation