yield newly spawned object to block if given

lib/object_daddy.rb

@@ -21,7 +21,9 @@ module ClassMethods
     def spawn(args = {})
       gather_exemplars
       generate_values(args)
-      new(args)
+      instance = new(args)
+      yield instance if block_given?
+      instance
     end
 
     # register a generator for an attribute of this class

spec/object_daddy_spec.rb

@@ -254,6 +254,14 @@
     @class.stubs(:name).returns('Widget')
   end
 
+  it "should yield the instance to a block if given" do
+    yielded_object = nil
+    @class.spawn do |obj|
+      yielded_object = obj
+    end
+    @class.should === yielded_object
+  end
+
   it "should register exemplars for the target class" do
     @class.expects(:gather_exemplars)
     @class.spawn