clutter-gtk test: don't run if typelib doesn't exist

clutter-gtk/lib/clutter-gtk.rb

@@ -45,7 +45,7 @@ class << self
       end
       Gtk.init if Gtk.respond_to?(:init)
       loader = Loader.new(self, argv)
-      loader.load("GtkClutter")
+      loader.load
       Clutter.init(argv) if Clutter.respond_to?(:init)
     end
   end
@@ -54,11 +54,17 @@ class Loader < GObjectIntrospection::Loader
     class InitError < StandardError
     end
 
+    NAMESPACE = "GtkClutter"
+
     def initialize(base_module, init_arguments)
       super(base_module)
       @init_arguments = init_arguments
     end
 
+    def load
+      super(NAMESPACE)
+    end
+
     private
     def pre_load(repository, namespace)
       init = repository.find(namespace, "init")

clutter-gtk/test/run-test.rb

@@ -68,6 +68,14 @@
 
 require "clutter-gtk"
 
+repository = GObjectIntrospection::Repository.default
+begin
+  repository.require(ClutterGtk::Loader::NAMESPACE)
+rescue GLib::Error
+  puts("Omit because typelib file doesn't exist: #{$!.message}")
+  exit(true)
+end
+
 # exclude sample/test-*
 clutter_gtk_test_base = File.join(clutter_gtk_base, "test")
 exit Test::Unit::AutoRunner.run(true, clutter_gtk_test_base)