Test 0, 1, 2, introspect calls.

Fixed method redefinition warnings for multiple introspections.

Author: mvidner

lib/dbus/proxy_object.rb

@@ -102,7 +102,7 @@ def define_shortcut_methods
         # creates a shortcut function that forwards each call to the method on
         # the appropriate intf
         singleton_class.class_eval do
-          define_method name do |*args, &reply_handler|
+          redefine_method name do |*args, &reply_handler|
             intf.method(name).call(*args, &reply_handler)
           end
         end

spec/proxy_object_spec.rb

@@ -0,0 +1,42 @@
+#!/usr/bin/env rspec
+require_relative "spec_helper"
+require "dbus"
+
+describe DBus::ProxyObject do
+  around(:each) do |example|
+    with_private_bus do
+      with_service_by_activation(&example)
+    end
+  end
+
+  let(:bus) { DBus::ASessionBus.new }
+
+  context "when calling org.ruby.service" do
+    let(:svc) { bus["org.ruby.service"] }
+
+    context "when introspection mode is not specified" do
+      describe "#bounce_variant" do
+        it "works without an explicit #introspect call" do
+          obj = svc["/org/ruby/MyInstance"]
+          ifc = obj["org.ruby.SampleInterface"]
+          expect(ifc.bounce_variant(42)).to be_eql 42
+        end
+
+        it "works with one #introspect call" do
+          obj = svc["/org/ruby/MyInstance"]
+          obj.introspect
+          ifc = obj["org.ruby.SampleInterface"]
+          expect(ifc.bounce_variant(42)).to be_eql 42
+        end
+
+        it "works with two #introspect calls" do
+          obj = svc["/org/ruby/MyInstance"]
+          obj.introspect
+          obj.introspect
+          ifc = obj["org.ruby.SampleInterface"]
+          expect(ifc.bounce_variant(42)).to be_eql 42
+        end
+      end
+    end
+  end
+end