Last year I shipped a few untyped ES6 JavaScript node.js services with 100% code coverage, 100% statement coverage, 100% branch coverage
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Replying to @puffnfresh
next add mutation coverage! I promise you'll find something useful.
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Replying to @_m_b_j_ @puffnfresh
I'd second that. Mutation testing will find all sorts of holes in tests, even if code/statement/branch coverage is 100%.
1 reply 0 retweets 1 like -
I still want to see if mutation typing works… that is, mutate the program, and if it still type checks, you need better types…
5 replies 3 retweets 17 likes -
Replying to @edwinbrady @dkubb and
Interesting. How would scope work? If you only mutate locally and then leave the function, does the taint follow?
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Replying to @rickasaurus @dkubb and
No idea, but it’d be fun to find out… I haven’t really thought this through very deeply, I just like the idea :)
3:10 PM - 2 Feb 2018
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