Tests: Ruby hooks.

test/ruby/hooks/multiple.rb

@@ -0,0 +1,9 @@
+require 'securerandom'
+
+on_worker_boot do
+    File.write("./cookie_worker_boot.#{SecureRandom.hex}", "worker booted")
+end
+
+on_thread_boot do
+    File.write("./cookie_thread_boot.#{SecureRandom.hex}", "thread booted")
+end