Instead of specifying all the directories to include, it would be nice to have the option to just specify the directories to exclude. For example, if I have vendored code in Godeps/, I could just specify to exclude the Godeps folder but run on everything else.

This may be my environments or "something" but the highlighting seems to be in odd places occasionally. Some output I'm looking at now has a line with the text return typedValue and half the line is not highlighted and half is, as in

return typedValue

Just some random idea: maybe you can add coverage stats to each file and at the end show average coverage for all files or by package etc. (weighted, taking into account number of lines in each file). Something like you can see on gocover: https://gocover.io/github.com/msoap/go-carpet

Cheers

Sorry for the repeat. :) Turns out the quick fix I did to work with Go Modules style code directories wasn't quite exact. It seems to work fine in the root of the go.mod enabled repo, but not in subdirs/packages. My first guess is that the code will need to look for go.mod in the current and parent directories to determine the source file paths. I don't quite have time to mess with it right now; hence this issue in case someone does have time before me.

Hi,

I tried to use your tool, but looks like it not working with many Go paths. I believe problem is https://github.com/msoap/go-carpet/blob/master/go-carpet.go#L127

When I have;

export GOROOT=$HOME/.go
export PATH=$PATH:$GOROOT/bin
export GOPATH=$HOME/golibs/os:$HOME/golibs/forks:$HOME/golibs/my
export PATH=$PATH:$HOME/golibs/my/bin:$HOME/golibs/forks/bin:$HOME/golibs/os/bin

I get errors when running:

dobek@Lapek2:~/go/os/sr/gi/Ge/go.rice <master:✔>
20:26:22 λ go-carpet .                                                                                                                            [40d21h44m]
2016/03/04 20:26:24 open /home/dobek/golibs/os:/home/dobek/golibs/forks:/home/dobek/golibs/my/src/github.com/GeertJohan/go.rice/appended.go: no such file or directory
2016/03/04 20:26:25 open /home/dobek/golibs/os:/home/dobek/golibs/forks:/home/dobek/golibs/my/src/github.com/GeertJohan/go.rice/rice/append.go: no such file or directory

Cherrs

This isn't the greatest code by any stretch, but it seems to get the job done. Hopefully as Go Modules become more prevalent, they will release official APIs for us (or maybe they already have and I just don't know where to look).

Fixes #12

The go tools will show a package-level summary (with -covermode=count), and go-carpet shows file summaries plus line coverage. At times, I'd like to just see a file-level summary of coverage.

I have a proof-of-concept patch that I can submit as a PR, but I wanted to open an issue for discussion before doing so. My patch outputs:

$ go-carpet -ls
github.com/msoap/go-carpet/ast.go - 100.0%
github.com/msoap/go-carpet/go-carpet.go - 65.8%
github.com/msoap/go-carpet/terminal_posix.go - 100.0%
github.com/msoap/go-carpet/utils.go - 100.0%
Coverage: 70.9% of statements

Hi,

Thanks for releasing this tool, I found it very useful. I had no problem using it on linux, but on Mac OS X (10.11.3 ) I get this error while installing

go get -u github.com/msoap/go-carpet
go install runtime/internal/sys: mkdir /usr/local/go/pkg/linux_amd64: permission denied

Any idea how to get around this?

I would like to thank you in advance for providing us such a helpful and cool tool!!

I understand that 100% coverage is a myth though, I would like to have an option that only shows the uncovered ones, if possible.

 usage: go-carpet [options] [paths]
   -256colors
     	use more colors on 256-color terminal (indicate the level of coverage)
   -args string
     	pass additional arguments for go test
   -file string
     	comma-separated list of files to test (default: all)
   -func string
     	comma-separated functions list (default: all functions)
   -include-vendor
     	include vendor directories for show coverage (Godeps, vendor)
+  -mincov int
+     	only show files that coverage were less than this value (default: 100)
   -summary
     	only show summary for each file
   -version
     	get version

My current workaround is to create a shell script as below. But it would be nice to have it by default.

#!/bin/bash

name_file_coverage='coverage.out'

# getNameFilesUncovered echoes file names in comma-separated list which didn't
# cover 100%. This will be used for “go-carpet` -file option.
function getNameFilesUncovered() {
    list=$(go tool cover -func="$name_file_coverage" | grep -v '100.0%\|init\|total' | awk '{print $1}')
    echo "$list" | while IFS= read -r line; do
        basename "${line}" | sed -e 's/\.[^\.]*$/\.go/'
    done | uniq | tr '\n' ','
}

# Run test and create cover profile
go test -timeout 30s -cover -v -coverprofile "$name_file_coverage" ./...

# Run go-carpet by specifing files into test
go-carpet -file "$(getNameFilesUncovered)"

It's quite possible I'm doing something wrong, but go-carpet doesn't seem to work with new Go code in the Go Modules (outside of GOPATH) style.

go version             # go version go1.11.2 linux/amd64
mkdir tp
cd tp
go mod init tp
echo -e 'package main\nfunc main(){}\n' > main.go
echo -e 'package main\nimport "testing"\nfunc TestMain(t *testing.T){}\n' > main_test.go
go test                # works fine
go-carpet              # 2019/02/20 20:27:23 file 'tp/main.go' not found in GOPATH

Please add option to exclude files from the report -- primarily to omit auto-generated sources.

Edit. Even better ignore files following the go convention:

var (
	genHdr = []byte("// Code generated ")
	genFtr = []byte(" DO NOT EDIT.")
)

// isGenerated reports whether the source file is generated code
// according the rules from https://golang.org/s/generatedcode.
// This is inherited from the original go lint.
func isGenerated(src []byte) bool {
	sc := bufio.NewScanner(bytes.NewReader(src))
	for sc.Scan() {
		b := sc.Bytes()
		if bytes.HasPrefix(b, genHdr) && bytes.HasSuffix(b, genFtr) && len(b) >= len(genHdr)+len(genFtr) {
			return true
		}
	}
	return false
}