class Vnu < Formula desc "Nu Markup Checker: command-line and server HTML validator" homepage "https://validator.github.io/validator/" url "https://github.com/validator/validator/releases/download/16.6.29/vnu.jar_16.6.29.zip" version "20160629" sha256 "f852d60ff976b8f388c8c10a1aa69b18562053297abcacae127f595879d18114" bottle :unneeded def install libexec.install "vnu.jar" bin.write_jar_script libexec/"vnu.jar", "vnu" end test do (testpath/"index.html").write <<-EOS.undent hi EOS system bin/"vnu", testpath/"index.html" end end