Hacker News Reader

Comment by jacksgt | Hacker News Reader

> Go 1.20 supports collecting code coverage profiles for programs (applications and integration tests), as opposed to just unit tests. > To collect coverage data for a program, build it with go build's -cover flag,

This is absolutely awesome! I'm looking forward to trying this on some server binaries!

View on HN

Note that it was already possible before with a command like:

    go test -coverpkg=./... -c . -o main.test

This command builds a test binary with a coverage config. So if you run it, launch your tests, and stop it gracefully, it will spit out a coverage report.

I’m not exactly sure what the change in Go 1.20 is about, maybe it’s easier somehow, I’ll have to try it.

That's not the same. `go test -c` builds a binary that runs your tests, whereas (if I understand correctly) the new thing builds a binary that runs your main(). If it works as I understand, that would be fantastic because then I could get rid of this monstrosity: https://github.com/holocm/holo/blob/master/main_test.go

yay now we can combine and balance mc/dc coverage testing with fuzzing. I find SQLite verification inspiring in that regard: https://www.sqlite.org/testing.html#tension_between_fuzz_tes...

Im struggling with previous behavior all the time. It would be much better with this

Reply on news.ycombinator.com