public void CallPostServiceAllWithoutDeletedOnce_WhenCalled()
        {
            // Arrange
            var postEnumerable = new List <Post>()
            {
                new Post()
            }.AsEnumerable <Post>();
            var postsServiceMock = new Mock <IPostService>();

            postsServiceMock.Setup(m => m.AllWithoutDeleted(string.Empty))
            .Returns(postEnumerable);
            PostController postController = new PostController(postsServiceMock.Object);

            // Act
            postController.AllPostsWithoutDeleted();

            // Assert
            postsServiceMock.Verify(m => m.AllWithoutDeleted(string.Empty), Times.Once);
        }