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proposal: cmd/cover: add flags to print coverage percentages over packages or files #45846

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golopot opened this issue Apr 29, 2021 · 1 comment

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@golopot
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@golopot golopot commented Apr 29, 2021

Command cover can print coverage summary for each functions with go tool cover -func=c.out. But sometimes it is too much detail for me. The report would be more readable if the coverage summary were grouped by files or packages.

Examples:

$ go tool cover -func=out
root/a/foo.go:10:		fooF			20%
root/a/foo.go:20:		fooG			30%
root/a/foo.go:30:		fooH			30%
root/a/foo2.go:30: 		foo2F			30%
root/b/goo.go:30:		gooF			50%
root/b/goo.go:40:		gooG			50%

# imaginary flag 
$ go tool cover -summary-for-files=out
root/a/foo.go			90%
root/a/foo2.go			90%
root/b/goo.go			70%

# imaginary flag
$ go tool cover -summary-for-packages=out
root/a			90%
root/b			90%
@gopherbot gopherbot added this to the Proposal milestone Apr 29, 2021
@ianlancetaylor ianlancetaylor added this to Incoming in Proposals Apr 29, 2021
@rsc
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@rsc rsc commented May 5, 2021

/cc @jfaller, who was talking about better coverage support generally.
Placing on hold for that work.

@rsc rsc moved this from Incoming to Hold in Proposals May 5, 2021
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