Hunting for packages with low test coverage in Kubernetes

k8s_module_coverage.sh

#!/bin/bash

set -o errexit

# run this script from kubernetes root directory to generate and open a coverage report for a package
# first arg is the package path to run the tests for
# example: ./script.sh staging/src/k8s.io/kubelet

# make temp dir
TEMP_DIR=$(mktemp -d)

# get the package path
if [ -z "$1" ]; then
    echo "Usage: $0 <path to the package>"
    exit 1
fi
PACKAGE_PATH=$1
ABS_PATH=$(pwd)/$PACKAGE_PATH

# run the tests
make test KUBE_COVER=y KUBE_COVER_REPORT_DIR=$TEMP_DIR WHAT="$ABS_PATH"

# open the coverage report
open $TEMP_DIR/combined-coverage.html