Package coverage when running integration tests

If coverpkg is missing on `go test` command, only the current package
will be covered. That's the case of unit tests. For integration tests
we need to explicitly declare each package.

Docker-DCO-1.1-Signed-off-by: Fabio Falci <fabiofalci@gmail.com> (github: fabiofalci)
Upstream-commit: b3d5e9527a050a0c7252f0125a8a26a6fc5175f1
Component: engine

components/engine/hack/make.sh

@@ -16,7 +16,7 @@ set -e
 #   in the Dockerfile at the root of the source. In other words:
 #   DO NOT CALL THIS SCRIPT DIRECTLY.
 # - The right way to call this script is to invoke "make" from
-#   your checkout of the Docker repository. 
+#   your checkout of the Docker repository.
 #   the Makefile will do a "docker build -t docker ." and then
 #   "docker run hack/make.sh" in the resulting container image.
 #
@@ -101,13 +101,14 @@ fi
 #
 go_test_dir() {
 	dir=$1
+	coverpkg=$2
 	testcover=()
 	if [ "$HAVE_GO_TEST_COVER" ]; then
 		# if our current go install has -cover, we want to use it :)
 		mkdir -p "$DEST/coverprofiles"
 		coverprofile="docker${dir#.}"
 		coverprofile="$DEST/coverprofiles/${coverprofile//\//-}"
-		testcover=( -cover -coverprofile "$coverprofile" )
+		testcover=( -cover -coverprofile "$coverprofile" $coverpkg )
 	fi
 	(
 		set -x
@@ -116,6 +117,16 @@ go_test_dir() {
 	)
 }
 
+# This helper function walks the current directory looking for directories
+# holding certain files ($1 parameter), and prints their paths on standard
+# output, one per line.
+find_dirs() {
+	find -not \( \
+		\( -wholename './vendor' -o -wholename './integration' -o -wholename './contrib' -o -wholename './pkg/mflag/example' \) \
+		-prune \
+	\) -name "$1" -print0 | xargs -0n1 dirname | sort -u
+}
+
 bundle() {
 	bundlescript=$1
 	bundle=$(basename $bundlescript)