Move CI to GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: Ruby tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  test:
+    name: Ruby tests
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby-version: ['1.9.3', '2.0', '2.1', '2.2', '2.3', '2.4', '2.5', '2.6', '2.7', '3.0']
+        experimental: [false]
+
+        include:
+          - ruby-version: 'head'
+            experimental: true
+
+    continue-on-error: ${{ matrix.experimental }}
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true
+    - name: Run tests
+      run: bundle exec rake

README.md

@@ -1,6 +1,6 @@
 # RABL #
 
-[![Continuous Integration status](https://secure.travis-ci.org/nesquena/rabl.svg)](http://travis-ci.org/nesquena/rabl)
+[![Continuous Integration status](https://github.com/nesquena/rabl/actions/workflows/ci.yml/badge.svg)](https://github.com/nesquena/rabl/actions)
 [![Code Climate](https://codeclimate.com/github/nesquena/rabl.svg)](https://codeclimate.com/github/nesquena/rabl)
 
 RABL (Ruby API Builder Language) is a Rails and [Padrino](http://padrinorb.com) ruby templating system for generating JSON, XML, MessagePack, PList and BSON.

Rakefile

@@ -35,7 +35,7 @@ desc "Prepares the fixtures being tested by installing dependencies"
 task "test:setup" do
   Dir[File.dirname(__FILE__) + "/fixtures/#{fixture_list}"].each do |fixture|
     puts "\n*** Setting up for #{File.basename(fixture)} tests ***\n"
-    `export BUNDLE_GEMFILE="#{fixture}/Gemfile"` if ENV["TRAVIS"]
+    `export BUNDLE_GEMFILE="#{fixture}/Gemfile"` if ENV["CI"]
     Bundler.with_clean_env {
       Dir.chdir(fixture) {
         puts `mkdir -p tmp/cache; bundle install --gemfile="#{fixture}/Gemfile"`