public async Task AllCommentsForPost()
{
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseInMemoryDatabase(databaseName: "AllComments_Database")
.Options;
var dbContext = new ApplicationDbContext(options);
var commentService = new CommentService(dbContext);
var postService = new PostService(dbContext);
await postService.CreatePostAsync("Hello", "I am Kris", "Kris", 1);
await commentService.CreateCommentAsync(1, "u1", "Hello i am tweet", null, false);
await commentService.CreateCommentAsync(1, "u2", "Hello i am tweet2", 1, false);
var commentsForPost = commentService.AllCommentsForPost(1);
Assert.Equal(2, commentsForPost.Count());
}