var componentFactory = new Mock<IComponentFactory>();
componentFactory.Setup(p => p.GetComponent<DummyComponent>()).Returns(new DummyComponent());
+ componentFactory.Setup(m => m.GetIndex(typeof(DummyComponent))).Returns(CompIdx.Index<DummyComponent>());
componentFactory.Setup(p => p.GetRegistration(It.IsAny<DummyComponent>())).Returns(dummyReg);
componentFactory.Setup(p => p.GetAllRegistrations()).Returns(new[] { dummyReg });
componentFactory.Setup(p => p.GetAllRefTypes()).Returns(new[] { CompIdx.Index<DummyComponent>() });