User Interface Testing
It’s great that we now have the ability to automatically test our app’s logic. If we inadvertently make a breaking change, or our assumptions get broken (like if Twitter goes out of business and its site disappears), then we’ll discover it the next time we run our test suite.
However, one thing we haven’t really exposed to testing is the user interface. If we broke the connection from a button to the method it calls, we would never know, because we test the method, not the button itself.
Testing user interfaces has always been really hard to do, which is why a lot of people don’t do it! The testing culture is much stronger among web developers—where you can always post the same HTTP request and scrape the HTML you get ...
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