puppet guard

Guardfile

notification :off

guard :shell do
  watch %r{^(manifests|site\/(profile|role)\/manifests)\/(.+)\.pp$} do
    system("pdk validate puppet") and system("pdk test unit")
  end
  watch %r{^(lib|site\/(profile|role)\/lib)\/(.+)\.rb$} do
    system("pdk validate ruby") and system("pdk test unit")
  end
  watch %r{^spec\/(classes|defines|applications|functions|types|type_aliases|hosts)\/(.+)\.rb$} do
    system("pdk validate ruby") and system("pdk test unit")
  end
end

Thanks David, thats a great suggestion.