Merge pull request celluloid#47 from motionbox/clear_registry

add a method to clear the registry (for use in tests)

lib/celluloid/registry.rb

@@ -31,5 +31,16 @@ def [](name)
     def registered
       @@registry_lock.synchronize { @@registry.keys }
     end
+
+    # removes and returns all registered actors as a hash of `name => actor`
+    # can be used in testing to clear the registry 
+    def clear_registry
+      hash = nil
+      @@registry_lock.synchronize do
+        hash = @@registry.dup
+        @@registry.clear
+      end
+      hash
+    end
   end
 end

spec/celluloid/registry_spec.rb

@@ -29,4 +29,15 @@ def sing_for(person)
     Celluloid::Actor[:marilyn] = Marilyn.new
     Celluloid::Actor[:marilyn].name.should == :marilyn
   end
+
+  describe :clear do
+    it "should return a hash of registered actors and remove them from the registry" do
+      Celluloid::Actor[:marilyn] ||= Marliyn.new
+      rval = Celluloid::Actor.clear_registry
+      rval.should be_kind_of(Hash)
+      rval.should have_key(:marilyn)
+      rval[:marilyn].wrapped_object.should be_instance_of(Marilyn)
+      Celluloid::Actor.registered.should be_empty
+    end
+  end
 end