Move from Travis CI to GitHub CI (#64)

* Move from Travis CI to GitHub CI

* Skip wget tests on JRuby

It seems that http_parser.rb doesn't compile on newest JRuby anymore.
We'll eventually want to replace it with whatever http.rb is using.

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ '**' ]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - "2.3"
+          - "2.4"
+          - "2.5"
+          - "2.6"
+          - "2.7"
+          - "3.0"
+          - "jruby-9.2"
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+
+      - name: Pull httpbin
+        run: docker pull kennethreitz/httpbin
+
+      - name: Run tests
+        run: bundle exec rake test

Rakefile

@@ -3,7 +3,9 @@ require "rake/testtask"
 
 Rake::TestTask.new do |t|
   t.libs << "test"
-  t.test_files = FileList['test/**/*_test.rb']
+  test_files = FileList['test/**/*_test.rb']
+  test_files -= ["test/wget_test.rb"] if RUBY_ENGINE == "jruby"
+  t.test_files = test_files
   t.warning = true
 end
 

down.gemspec

@@ -27,7 +27,7 @@ Gem::Specification.new do |spec|
     spec.add_development_dependency "http", "~> 4.3"
   end
   spec.add_development_dependency "posix-spawn" unless RUBY_ENGINE == "jruby"
-  spec.add_development_dependency "http_parser.rb"
+  spec.add_development_dependency "http_parser.rb" unless RUBY_ENGINE == "jruby"
   spec.add_development_dependency "docker-api"
   spec.add_development_dependency "warning" if RUBY_VERSION >= "2.4"
 end