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1/3 Yesterday a test of an unreleased advanced order type encountered a bug which resulted in the order's prices being matched against the wrong side of the book. Some clients bought from the tester at $8000 and others sold at $12000 without clearing the intervening liquidity.

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Jesse Powell

@jespow

Sep 14, 2019

So, because a bug is discovered in a limited production beta once every few years it means there’s no testing? Our new order types undergo thousands of automated and human tests for months before they make it to prod. You can’t find all the bugs all the time.

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Replying to

and

No, that’s not what I’m saying. If by “shitty” you mean had < 100% coverage of every possible edge case in the universe then you’d be right but that’s not a reality of eng. Test outcomes are always situational, and tests cannot be perfectly imagined for every possible edge case.

9:37 PM · Sep 14, 2019Twitter for iPhone

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Muh Bagz

@chipreps

Sep 15, 2019

Pretty sure they had more tests than your projects on your github 🤣🤣

Replying to

and

Testing the buying and selling of a single commodity on a site that does nothing else but buying and selling commodities is not an edge case you Muppet. This was clearly not tested at all. Neither by unit tests or by people.