public void LoadAttachedImageTest() { _interactorMock.Setup(f => f.LoadAttachedImage()).Returns(It.IsAny <string>()); var presenter = new PresenterCreatePost(_viewMock.Object, _interactorMock.Object, _routerMock.Object, _stylesHolderMock.Object, Localization.Lang); presenter.LoadAttachedImage(); _interactorMock.Verify(f => f.LoadAttachedImage(), Times.Once); }