7855d6835d
Since rulegen is only tested by inspecting and running its output code, we have no good way to see if any chunks of its source are actually being unused. Code coverage only works as part of 'go test', since it needs to instrument our code. Add a script that sets up a tiny test for that purpose, with a quick example on how to use it. We need to use a script, because there's no other way to make this work without breaking 'go run *.go'. It's far more common to run the generator than to obtain a coverage profile, so this solution seems like the right tradeoff, and we don't break existing users. The script isn't terribly portable, but that's okay for now. At the time of wriging, coverage sits at 89.7%. I've manually skimmed main.go and rulegen.go, and practically all unused code is either error handling, or optional code like *genLog and "if false". A couple of small exceptions stand out, though I'm not paying attention to them in this CL. While at it, inline a couple of tiny unusedInspector methods that were only needed once or twice. Change-Id: I78c5fb47c8536d70e546a437637d4428ec7adfaa Reviewed-on: https://go-review.googlesource.com/c/go/+/212760 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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README.md
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