Is it possible to post coverage for multiple packages to Coveralls? - go

Question

I want to track test coverage on a go project using Coveralls, the instructions for the integration reference using
https://github.com/mattn/goveralls
cd $GOPATH/src/github.com/yourusername/yourpackage
$ goveralls your_repos_coveralls_token
However, this only posts the results for one package and running for packages in turn does not work as the final run overwrites all other runs. Has anyone figured out how to get coverage for multiple packages?

Answer 1

I ended up using this script:
echo "mode: set" > acc.out
for Dir in $(find ./* -maxdepth 10 -type d );
do
if ls $Dir/*.go &> /dev/null;
then
go test -coverprofile=profile.out $Dir
if [ -f profile.out ]
then
cat profile.out | grep -v "mode: set" >> acc.out
fi
fi
done
goveralls -coverprofile=acc.out $COVERALLS
rm -rf ./profile.out
rm -rf ./acc.out
It basically finds all the directories in the path and prints a coverage profile for them separately. It then concatenates the files into one big profile and ships them off to coveralls.

Answer 2

Taking Usman's answer, and altering it to support skipping Godep and other irrelevant folders:
echo "mode: set" > acc.out
for Dir in $(go list ./...);
do
returnval=`go test -coverprofile=profile.out $Dir`
echo ${returnval}
if [[ ${returnval} != *FAIL* ]]
then
if [ -f profile.out ]
then
cat profile.out | grep -v "mode: set" >> acc.out
fi
else
exit 1
fi
done
if [ -n "$COVERALLS_TOKEN" ]
then
goveralls -coverprofile=acc.out -repotoken=$COVERALLS_TOKEN -service=travis-pro
fi
rm -rf ./profile.out
rm -rf ./acc.out
Notice that instead of looking at every directory, I us the go list ./... command which lists all directories that actually get used to build the go package.
Hope that helps others.
** EDIT **
If you are using the vendor folder for Go v.1.6+ then this script filters out the dependencies:
echo "mode: set" > acc.out
for Dir in $(go list ./...);
do
if [[ ${Dir} != *"/vendor/"* ]]
then
returnval=`go test -coverprofile=profile.out $Dir`
echo ${returnval}
if [[ ${returnval} != *FAIL* ]]
then
if [ -f profile.out ]
then
cat profile.out | grep -v "mode: set" >> acc.out
fi
else
exit 1
fi
else
exit 1
fi
done
if [ -n "$COVERALLS_TOKEN" ]
then
goveralls -coverprofile=acc.out -repotoken=$COVERALLS_TOKEN -service=travis-pro
fi

Answer 3

Has anyone figured out how to get coverage for multiple packages?
Note: with Go 1.10 (Q1 2018), that... will actually be possible.
See CL 76875
cmd/go: allow -coverprofile with multiple packages being tested
You can see the implementation of a multiple package code coverage test in commit 283558e
Jeff Martin has since the release of Go 1.10 (Feb. 2018) confirmed in the comments:
go test -v -cover ./pkgA/... ./pkgB/... -coverprofile=cover.out gets a good profile and
go tool cover -func "cover.out" will get a total: (statements) 52.5%.
So it is working!

Answer 4

I have been using http://github.com/axw/gocov to get my code coverage.
I trigger this in a bash script, in here I call all my packages.
I also use http://github.com/matm/gocov-html to format into html.
coverage)
echo "Testing Code Coverage"
cd "${SERVERPATH}/package1/pack"
GOPATH=${GOPATH} gocov test ./... > coverage.json
GOPATH=${GOPATH} gocov-html coverage.json > coverage_report.html
cd "${SERVERPATH}/package2/pack"
GOPATH=${GOPATH} gocov test ./... > coverage.json
GOPATH=${GOPATH} gocov-html coverage.json > coverage_report.html
;;
Hope that helps a little bit.

Answer 5

Here is a pure GO solution:
I create a library that may help, https://github.com/bluesuncorp/overalls
all it does is recursively go through each directory ( aka each package ), run go test and produce coverprofiles, then merges all profiles into a single one at the root of the project directory called overalls.coverprofile
then you can use a tool like https://github.com/mattn/goveralls to send it to coveralls.io
hope everyone likes

Answer 6

In Go 1.13, following command generates coverage for multiple packages
go test -v -coverpkg=./... -coverprofile=profile.cov ./...
go tool cover -func profile.cov
for html report
go tool cover -html=profile.cov -o cover.html