Simplest possible JRuby+Java test

Bar.java

package org.foo;

public class Bar {
  public static int baz() {
    return 1;
  }
}

bar_spec.rb

#!/usr/bin/env jruby

require "minitest/autorun"

describe org.foo.Bar do
  describe "baz" do
    it "must return 1" do
      org.foo.Bar.baz.must_equal 1
    end
  end
end

Or I could:

• Specify my Ruby dependencies with Bundler
• Add my Java dependencies to a pom.xml
• git add pom.xml
• mvn dependency:copy-dependencies
• mkdir jars
• cp target/dependency/*.jar jars/
• git add jars
• Use JRuby::Ant support to compile my Java code on-the-fly when harnessing my tests and packaging a Gem

Then in my Ruby scripts, after bundler/setup I can just: Dir["jars/*.jar"].each { |jar| require jar }

A standard rake-task could handle actually releasing a gem of the library I'm developing by adding the jars to the FileList.

It's //so// dirty, but it'd work, and I'm drawing a blank thinking of anything better.

Buildr is so close... but it's just much too huge of a project to fix, and the internals are just mind-bending since it's built on top of Rake. Plus it wouldn't let me setup a class-path and ensure the build as a pre-requisite outside of Rake, and I much prefer directly executable test/spec-files.

As an example of the above mention of direct execution, you can:

1. Clone this project: https://github.com/sam/blog
2. ./install-dependencies
3. bundle install
4. test/watch.rb

Which is basically the setup I mention above, except using Maven instead of Ant to compile. (Only because I assume using a non-Maven source tree structure, and custom build-dir would be a little simpler with Ant?)