Functionals
Try to open a story post
Does this post open without problems?
Try to open a job post
Does this post open without problems?
Try to open a poll post
Does this post open without problems?
Try to load more posts
Did the posts loaded without error or without spamming the user?
General
Does the UI have at least stories, jobs and polls?
Are the posts displayed in the correct order(from newest to oldest)?
Is the UI notifying the user that there is a new update on a certain post?
Is the project using Throttle to regulate the amount of request (every 5 seconds)?
Bonus
+Does the UI have more types of posts than stories, jobs and polls?