public async Task GetAllCommentsForUser_ShouldBeDoneSuccessfully() { // Arrange var dateCommented = DateTime.Now; var comments = new List <Comment>() { new Comment() { Id = 1, Commented = new PowerUser(), CommentedId = 1, Commenter = new CommonUser(), CommenterId = 2, Content = "Test", Created = dateCommented, } }; var commentsToReturn = new List <CommentToReturn>() { new CommentToReturn() { Content = "Test", CommenterId = 2, Commented = new UserToReturnDto(), CommentedId = 1, Commenter = new UserToReturnDto(), DateCommented = dateCommented } }; _unitOfWorkMock.Setup(x => x.Comments.GetAllCommentsForUser(It.IsAny <int>())) .ReturnsAsync(comments); _mapperMock.Setup(x => x.Map <ICollection <CommentToReturn> >(It.IsAny <ICollection <Comment> >())) .Returns(commentsToReturn); // Act var result = await _sut.GetAllCommentsForUser(It.IsAny <int>()); // Assert var comment = result.FirstOrDefault(); Assert.Equal(comments.FirstOrDefault().Created, comment.DateCommented); Assert.Equal(comments.FirstOrDefault().Content, comment.Content); Assert.Equal(comments.FirstOrDefault().CommenterId, comment.CommenterId); Assert.Equal(comments.FirstOrDefault().CommentedId, comment.CommentedId); }