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/17.2.0/vnu.jar_17.2.0.zip" version "20170130" sha256 "9e96616caf5ec720ab6db12ea0d9a9a3fd97128551e3d358e1bb7a50d4310aa6" 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