Monkey patch for denying TTF files to PhantomJS under test env

sprockets-server-monkeypatch-deny_phantomjs_ttf.rb

# config/initializers/sprockets-server-monkeypatch-deny_phantomjs_ttf.rb

# Monkey patch under test environment that prevents PhantomJS on OSX                                                    
# from crashing when dealing with TTF webfonts.                                                                         
# Note: depending on your setup, it's likely that the RUBY_PLATFORM
# is not actually relevant for server - it's the UA that crashes.                                                     
if Rails.env.test? # && RUBY_PLATFORM =~ /darwin/                                                                       
  module Sprockets::Server
    def call_with_env_instance_var(env)
      @env = env
      call_without_env_instance_var(env)
    end
    alias_method_chain :call, :env_instance_var

    def forbidden_request?(path)
      if @env['HTTP_USER_AGENT'] =~ /Intel Mac OS X.*PhantomJS/ && path =~ /ttf$/
        STDERR.puts "Denying #{path} to #{@env['HTTP_USER_AGENT']}"
	true
      else
        path.include?("..")
      end
    end
  end
end