add test for scrolling to the bottom #99
Merged
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The current tests for exercise 4 look prone to false positives compared to the other tests that break as soon as I import the initial version instead of the final version. I failed to achieve that because I had no idea how to let the test code notice the subtle difference between when using the
useLayoutEffecthook and when using theuseEffecthook. Nevertheless, the new test will fail while someone is making the transition for the exercise.