A bit disappointed by the article. It's more about how to test any external dependency using different injection techniques, not just time. What I was hoping f

A bit disappointed by the article. It's more about how to test any external dependency using different injection techniques, not just time. What I was hoping for was something like simulations or UIs/games. Complex user interactions like "Sarah clicked here, waited a few seconds, then clicked this, then waited for a network request to finish..."