I just came across this test case in some old code I had forgotten about:
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It reminded me of something I actually think is important: have a little fun with the examples in your test cases. Not so much as to be distracting, but a little humor can add some fun to an otherwise mechanical, boring task.
I like to think of the guy who comes along a year later trying to understand my code by reading the tests. Telling a small story or making some pop-culture references will hopefully brighten his task.