This tool was designed in older times (2015), when:
- go test ./... wasn't running tests in parallel
- go test -i improved build performance (this is not true anymore)
- go test wasn't using a local cache
As such, it is recommended to stop using this tool.
pre-commit-go project includes two tools:
pcgto run checks on a Go project on commit and on push via git hooks.
covgwhich is a yet-another-coverage-tool. It's more parallel than any other coverage tool and has native support for global inference.
Or watch the short presentation about pre-commit-go.
pre-commit-go is under heavy development. If you plan to use it as part of a
CI, please make sure to pin your version or track it closely. We'll eventually
settle and keep backward compability but the tool is not mature yet, so simply
vendor it for now.
go get github.com/maruel/pre-commit-go/cmd/...
Use built-in help to list all options and commands:
Run from within a git checkout inside
$GOPATH. This installs the git hooks
.git/hooks and runs the checks in mode
pre-push. It runs the checks
on the diff against
It may become necessary to commit something known to be broken. To bypass the pre-commit hook, use:
git commit --no-verify (or -n) git push --no-verify (-n does something else! <3 git)
You can use the
-g flag to enable global inference, that is, coverage induced
by a unit test will work across package boundary.
Example coverage output
$ ./cov -i "*.pb.go" -min 50 common/bit_field coverage: 100.0% (17/17) >= 50.0%; Functions: 0 untested / 0 partially / 8 completely common/cache common/cache/cache.go:166 memory.Add 66.7% (6/9) 167,172,175 common/cache/lru.go:79 orderedDict.popOldest 66.7% (2/3) 84 common/cache/lru.go:200 lruDict.UnmarshalJSON 63.6% (7/11) 202,205,208,213 common/cache/cache.go:276 disk.Add 60.0% (9/15) 277,282,291-292,295-296 common/cache/lru.go:28 entry.UnmarshalJSON 60.0% (6/10) 31,34,41,44 common/cache/lru.go:107 orderedDict.pushBack 40.0% (2/5) 108-110 coverage: 84.8% (117/138) >= 50.0%; Functions: 0 untested / 6 partially / 35 completely common/clock common/clock/systemclock.go:33 systemClock.NewTimer 0.0% (0/1) common/clock/systemclock.go:29 systemClock.Sleep 0.0% (0/1) coverage: 95.2% (40/42) >= 50.0%; Functions: 2 untested / 0 partially / 18 completely
See Configuration for more details if you want to tweak the default checks. The default checks are meant to be sensible, you can list them with:
Continous integration support
pcg is designed to be used as part of CI. This is described in its