Add support for JRuby, it was easier than assumed.

.jrubyrc

@@ -0,0 +1,6 @@
+backtrace.mask=true
+compile.invokedynamic=true
+objectspace.enabled=true
+backtrace.color=true
+compat.version=2.2
+backtrace.style=mri

.travis.yml

@@ -5,6 +5,7 @@ rvm:
 - 2.2
 - 2.1
 - 2.0
+- jruby-head
 env:
   matrix:
     - TEST_SUITE=test

Gemfile

@@ -1,30 +1,38 @@
 source 'https://rubygems.org'
 gemspec
 
-gem 'pygments.rb', '~> 0.6.0'
-gem 'redcarpet', '~> 3.2', '>= 3.2.3'
+gem 'pry'
 gem 'toml', '~> 0.1.0'
 gem 'jekyll-paginate', '~> 1.0'
 gem 'jekyll-gist', '~> 1.0'
 gem 'jekyll-coffeescript', '~> 1.0'
-gem 'classifier-reborn', '~> 2.0'
+
+platform :ruby, :mswin, :mingw do
+  gem 'pygments.rb', '~> 0.6.0'
+  gem 'rdiscount', '~> 2.0'
+  gem 'classifier-reborn', '~> 2.0'
+  gem 'redcarpet', '~> 3.2', '>= 3.2.3'
+  gem 'liquid-c', '~> 3.0'
+end
+
+if RUBY_PLATFORM =~ /cygwin/ || RUBY_VERSION.start_with?("2.2")
+  gem 'test-unit'
+end
 
 gem 'rake', '~> 10.1'
 gem 'rdoc', '~> 3.11'
 gem 'redgreen', '~> 1.2'
 gem 'shoulda', '~> 3.5'
 gem 'cucumber', '1.3.18'
-gem 'rdiscount', '~> 2.0'
 gem 'launchy', '~> 2.3'
 gem 'simplecov', '~> 0.9'
 gem 'mime-types', '~> 1.5'
+gem 'kramdown', '~> 1.7.0'
 gem 'jekyll_test_plugin'
 gem 'jekyll_test_plugin_malicious'
-gem 'liquid-c', '~> 3.0'
-gem 'minitest'
 gem 'minitest-reporters'
 gem 'minitest-profile'
-gem 'test-unit' if RUBY_PLATFORM =~ /cygwin/ || RUBY_VERSION.start_with?("2.2")
+gem 'minitest'
 gem 'rspec-mocks'
 
 if ENV['BENCHMARK']

script/cibuild

@@ -1,12 +1,15 @@
-#! /bin/bash
+#! /bin/bash -e
 
 script/branding
 
-set -e
-
-if test -z "$TEST_SUITE"; then
-  script/test
+if [[ -z "$TEST_SUITE" ]]
+then
+  script/test  ci
   script/cucumber
-else
+elif [[ -x "script/$TEST_SUITE" ]]
+then
   script/$TEST_SUITE
+else
+  echo "Unknown test suite."
+  exit 1
 fi

script/cucumber

@@ -1,5 +1,11 @@
 #!/bin/bash
 
-time bundle exec cucumber \
-  -f Features::Support::Overview \
-  "$@"
+if ruby --version | grep -q "jruby"
+then
+  echo "Move along, we are not testing features on JRuby right now."
+  exit 0
+else
+  time ruby -S bundle exec cucumber \
+    -f Features::Support::Overview \
+    "$@"
+fi

script/test

@@ -1,15 +1,55 @@
-#! /bin/bash
-set -e
+#! /bin/bash -e
 
 # Usage:
-#   script/test
 #   script/test <test_file>
+#   script/test [ruby|jruby]
+#   script/test
 
 if [ -d test/dest ]
   then rm -r test/dest
 fi
 
-if [[ $# -lt 1 ]]
- then time bundle exec rake TESTOPTS='--profile' test 
- else time bundle exec ruby -Itest "$@" --profile
+# -----------------------------------------------------------------------------
+# If you send us a ruby then we use that, if you do not then we test with
+# whatever we can detect, this way you can run both suites when you test out
+# your source, we expect full coverage now, not just MRI.
+# -----------------------------------------------------------------------------
+
+if [[ "$1" == "ci" ]]
+then
+  rubies=(
+    ruby
+  )
+
+  shift
+elif [[ "$1" == "ruby" ]] || [[ "$1" == "jruby" ]]
+then
+  rubies=(
+    $1
+  )
+
+  shift
+else
+  rubies=()
+  for r in jruby ruby; do
+    if which "$r"
+    then
+      rubies+=(
+        $r
+      )
+    fi
+  done
 fi
+
+for ruby in $rubies; do
+  if [[ $# -lt 1 ]]
+  then
+    set -x
+    time $ruby -S bundle exec \
+      rake TESTOPTS='--profile' test
+   else
+    set -x
+    time $ruby bundle exec ruby -Itest \
+      "$@" --profile
+  fi
+done

test/helper.rb

@@ -1,3 +1,7 @@
+def jruby?
+  defined?(RUBY_ENGINE) && RUBY_ENGINE == 'jruby'
+end
+
 unless ENV['TRAVIS']
   require File.expand_path('../simplecov_custom_profile', __FILE__)
   SimpleCov.start('gem') do
@@ -15,19 +19,25 @@ require 'rspec/mocks'
 
 require 'jekyll'
 
-require 'rdiscount'
-require 'kramdown'
-require 'redcarpet'
+unless jruby?
+  require 'rdiscount'
+  require 'redcarpet'
+end
 
+require 'kramdown'
 require 'shoulda'
 
 include Jekyll
 
-# Send STDERR into the void to suppress program output messages
+# FIXME: If we really need this we lost the game.
 STDERR.reopen(test(?e, '/dev/null') ? '/dev/null' : 'NUL:')
 
 # Report with color.
-Minitest::Reporters.use! [Minitest::Reporters::DefaultReporter.new(:color => true)]
+Minitest::Reporters.use! [
+  Minitest::Reporters::DefaultReporter.new(
+    :color => true
+  )
+]
 
 class JekyllUnitTest < Minitest::Test
   include ::RSpec::Mocks::ExampleMethods

test/test_rdiscount.rb

@@ -4,10 +4,22 @@ class TestRdiscount < JekyllUnitTest
 
   context "rdiscount" do
     setup do
+      if jruby?
+        then skip(
+          "JRuby does not perform well with CExt, test disabled."
+        )
+      end
+
       config = {
         'markdown' => 'rdiscount',
-        'rdiscount' => { 'extensions' => ['smart', 'generate_toc'], 'toc_token' => '{:toc}' }
+        'rdiscount' => {
+          'toc_token' => '{:toc}',
+          'extensions' => [
+            'smart', 'generate_toc'
+          ],
+        }
       }
+
       @markdown = Converters::Markdown.new config
     end
 

test/test_redcarpet.rb

@@ -3,10 +3,21 @@ require 'helper'
 class TestRedcarpet < JekyllUnitTest
   context "redcarpet" do
     setup do
+      if jruby?
+        then skip(
+          "JRuby does not perform well with CExt, test disabled."
+        )
+      end
+
       @config = {
-        'redcarpet' => { 'extensions' => ['smart', 'strikethrough', 'filter_html'] },
-        'markdown' => 'redcarpet'
+        'markdown' => 'redcarpet',
+        'redcarpet' => {
+          'extensions' => [
+            'smart', 'strikethrough', 'filter_html'
+          ]
+        }
       }
+
       @markdown = Converters::Markdown.new @config
     end
 

test/test_related_posts.rb

@@ -20,8 +20,17 @@ class TestRelatedPosts < JekyllUnitTest
 
   context "building related posts with lsi" do
     setup do
+      if jruby?
+        skip(
+          "JRuby does not perform well with CExt, test disabled."
+        )
+      end
+
       allow_any_instance_of(Jekyll::RelatedPosts).to receive(:display)
-      @site = fixture_site({"lsi" => true})
+      @site = fixture_site({
+        "lsi" => true
+      })
+
       @site.reset
       @site.read
       require 'classifier-reborn'

test/test_tags.rb

@@ -136,6 +136,14 @@ CONTENT
   end
 
   context "with the pygments highlighter" do
+    setup do
+      if jruby?
+        then skip(
+          "JRuby does not support Pygments."
+        )
+      end
+    end
+
     context "post content has highlight tag" do
       setup do
         fill_post("test", {'highlighter' => 'pygments'})
@@ -353,7 +361,15 @@ CONTENT
 
     context "using RDiscount" do
       setup do
-        create_post(@content, 'markdown' => 'rdiscount')
+        if jruby?
+          then skip(
+            "JRuby does not perform well with CExt, test disabled."
+          )
+        end
+
+        create_post(@content, {
+          'markdown' => 'rdiscount'
+        })
       end
 
       should "parse correctly" do
@@ -375,7 +391,15 @@ CONTENT
 
     context "using Redcarpet" do
       setup do
-        create_post(@content, 'markdown' => 'redcarpet')
+        if jruby?
+          skip(
+            "JRuby does not perform well with CExt, test disabled."
+          )
+        end
+
+        create_post(@content, {
+          'markdown' => 'redcarpet'
+        })
       end
 
       should "parse correctly" do