diff --git a/lib/rb/spec/processor_spec.rb b/lib/rb/spec/processor_spec.rb
new file mode 100644
index 0000000..24440e4
--- /dev/null
+++ b/lib/rb/spec/processor_spec.rb
@@ -0,0 +1,64 @@
+require File.dirname(__FILE__) + '/spec_helper'
+
+class ThriftSpec < Spec::ExampleGroup
+  include Thrift
+
+  class ProcessorSpec
+    include Thrift::Processor
+  end
+
+  describe "Processor" do
+    before(:each) do
+      @processor = ProcessorSpec.new(mock("MockHandler"))
+      @prot = mock("MockProtocol")
+    end
+
+    def mock_trans(obj)
+      obj.should_receive(:trans).ordered.and_return do
+        mock("trans").tee do |trans|
+          trans.should_receive(:flush).ordered
+        end
+      end
+    end
+
+    it "should call process_<message> when it receives that message" do
+      @prot.should_receive(:read_message_begin).ordered.and_return ['testMessage', MessageTypes::CALL, 17]
+      @processor.should_receive(:process_testMessage).with(17, @prot, @prot).ordered
+      @processor.process(@prot, @prot).should == true
+    end
+
+    it "should raise an ApplicationException when the received message cannot be processed" do
+      @prot.should_receive(:read_message_begin).ordered.and_return ['testMessage', MessageTypes::CALL, 4]
+      @prot.should_receive(:skip).with(Types::STRUCT).ordered
+      @prot.should_receive(:read_message_end).ordered
+      @prot.should_receive(:write_message_begin).with('testMessage', MessageTypes::EXCEPTION, 4).ordered
+      ApplicationException.should_receive(:new).with(ApplicationException::UNKNOWN_METHOD, "Unknown function testMessage").and_return do
+        mock(ApplicationException).tee do |e|
+          e.should_receive(:write).with(@prot).ordered
+        end
+      end
+      @prot.should_receive(:write_message_end).ordered
+      mock_trans(@prot)
+      @processor.process(@prot, @prot)
+    end
+
+    it "should pass args off to the args class" do
+      args_class = mock("MockArgsClass")
+      args = mock("#<MockArgsClass:mock>").tee do |args|
+        args.should_receive(:read).with(@prot).ordered
+      end
+      args_class.should_receive(:new).and_return args
+      @prot.should_receive(:read_message_end).ordered
+      @processor.read_args(@prot, args_class).should eql(args)
+    end
+
+    it "should write out a reply when asked" do
+      @prot.should_receive(:write_message_begin).with('testMessage', MessageTypes::REPLY, 23).ordered
+      result = mock("MockResult")
+      result.should_receive(:write).with(@prot).ordered
+      @prot.should_receive(:write_message_end).ordered
+      mock_trans(@prot)
+      @processor.write_result(result, @prot, 'testMessage', 23)
+    end
+  end
+end