public void Registering_the_same_singleton_for_different_interfaces_should_only_build_one_result_when_building_all() { using (var builder = new WindsorObjectBuilder()) { var singleton = new SingletonThatImplementsToInterfaces(); builder.RegisterSingleton(typeof(ISingleton1), singleton); builder.RegisterSingleton(typeof(ISingleton2), singleton); builder.Configure(typeof(ComponentThatDependsOnMultiSingletons), DependencyLifecycle.InstancePerCall); var dependency = (ComponentThatDependsOnMultiSingletons)builder.Build(typeof(ComponentThatDependsOnMultiSingletons)); Assert.NotNull(dependency.Singleton1); Assert.NotNull(dependency.Singleton2); var builtTypes = builder.BuildAll(typeof(ISingleton1)); Assert.AreEqual(builtTypes.Count(), 1); } //Not supported by,typeof(SpringObjectBuilder)); }