example spec for testing lua code

pnl_spec.rb

require 'spec_helper'

describe "lua::calculate_pnl" do
  context "prices is increasing" do
    it "returns positive profit" do
      pnl = Wolverine.util.calcualte_pnl([1, 2, 3])
      pnl.should > 0
    end
    
    # more verifications
  end
  
  # more contexts
end

Then run the spec with bundle exec rspec spec/wolverine/pnl_spec.rb