Functional
Try to open a story post
Does this post open without any errors?
Try to open a job post
Does this post open without any errors?
Try to open a poll post
Does this post open without any errors?
Try to load more posts
Did the posts load without error and 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)?
Does the UI notify the user when a certain post is updated?
Is the project using throttling to regulate the number of requests (every 5 seconds)?
Bonus
+Does the UI have more types of posts than stories, jobs and polls?