adding test == others fail??? (intermediate) anthony explains

today I show off a very strange bug in `black`'s testsuite -- and then how I found the problem which led to the fix!
- what is test pollution? • finding and fixing tes...
- fixing a flaky test with detect-test-pollution: • fix flaky tests with d...
- debugging a sentry test pollution: • debugging a sentry tes...
playlist: • anthony explains
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[@mrswats]

Detect test pollution is such a great tool

[@twelvethis3979]

Really great stuff again! Thanks, AnthonyI love it how you tag these videos to be "intermediate". I think this is really advanced stuff. I wouldn't have been able to figure this out and I presume 90 percent of programmers would struggle with this is as well 😅

[@leonseled]

Thank you for sharing your knowledge. The devil is in the details and that's something where even ChatGPT would fail at i.e. how you arrived at your solution, the way you navigated around the problem etc. Always something to learn from a master at his craft! Love how your videos are also free from fluff!

[@SQADIqw]

Nice tools, valuable educational tips, cool vid. Thank for the production and sharing!

[@rahul_bali]

Do you guys also face difficulty writing tests more than the actual code ? Sometimes I don't want to write test cases at all.

[@SQADIqw]

Btw, @lru_cache is not infinite, it has default value of max_size=128

[@illiakaltovich]

Just a random comment to support this great channel

[@spaghettiking653]

How does detect_test_pollution half the space every time? How does it know it can just stop considering half the tests?

[@anthonywritescode]

if you run half the tests and it still fails then you know the other half doesn't cause the failure

[@user-gh4lv2ub2j]

Wait; black has a test suite???

[@ruroruro]

Of course it does. It's incredibly important for an autoformatter to guarantee that it works exactly as expected, doesn't produce invalid code, doesn't change semantics, doesn't keep reformatting code back and forth, doesn't require multiple passes to reach the "fixed point", etc etc etc

[@anthonywritescode]

imo black has not enough of a test suite

[@greob]

8:35 tests on filesystem are most of the time setup in /tmp which is usually tmpfs, so it should be plenty fast since it’s all done in RAM, right?

[@anthonywritescode]

not necessarily and ime not usually -- tmpfs can be any filesystem type