docker-compose-exit-code-from.sh

#!/bin/bash
me=$(basename $0)

function print_help {
        echo "$me - wrapper for docker-compose --exit-code-from <test-service>"
        echo
        echo "SYNOPSIS"
        echo "  docker-compose --exit-code-from implies --abort-on-container-exit."
        echo "  This has a nasty side-effect: docker-compose will exit with code 0 if another container than test exits early."
        echo "  $me tries to work around this issue."
        echo "  The goal is that exit code 0 means that the tests really ran an returned 0."
        echo
        echo "OPTIONS"
        echo "  -h | --help"
        echo "          show this help summary"
}

# fail even when option parsing fails
set -e
# option parsing
REARRANGED_OPTIONS=$(getopt -o h --long help -- "$@")
eval set -- "$REARRANGED_OPTIONS"
while true
do
        case "$1" in
                -h | --help ) print_help; exit;;
                -- )    
                        shift; # skip --
                        if [ $# -ne 1 ]
                        then    
                                echo "$me requires exactly one argument: the name of the test-service."
                                exit 1
                        fi      
                        TEST_SERVICE=$1
                        break;;
                * ) echo "Unexpected options: \"$@\" . exiting."; exit 1 ;;
        esac
done

TMP=$(mktemp /tmp/$me-XXXXXXXXX)
function cleanup {
        rm -rf $TMP
        docker-compose down -v
}
trap cleanup EXIT

set -x
docker-compose down -v
docker-compose pull
docker-compose up --build --exit-code-from $TEST_SERVICE > >(tee $TMP) 2>&1
# exit with failure if tests didn't really run and finish with code 0
grep -q "_${TEST_SERVICE}_1 exited with code 0" $TMP