tests: add a -j $jobs mode to test runner for parallel execution

Now that tests can be run in parallel, lets actually do it… The mode has
some downsides like not collecting the failed tests, but it can be a lot
faster than a sequential run and is therefore a good alternative in
testing those "this shouldn't break anything" changes (which tend to
break everything if untested).

Git-Dch: Ignore

test/integration/framework

@@ -9,6 +9,14 @@ while [ -n "$1" ]; do
 		export MSGLEVEL=4
 	elif [ "$1" = '--color=no' ]; then
 		export MSGCOLOR='NO'
+	elif [ "$1" = '--color=yes' ]; then
+		export MSGCOLOR='YES'
+	elif [ "$1" = '--color' ]; then
+		export MSGCOLOR="$(echo "$2" | tr 'a-z' 'A-Z')"
+		shift
+	elif [ "$1" = '--level' ]; then
+		export MSGLEVEL=$2
+		shift
 	else
 		echo >&2 "WARNING: Unknown parameter »$1« will be ignored"
 	fi
@@ -17,7 +25,7 @@ done
 export MSGLEVEL="${MSGLEVEL:-3}"
 
 # we all like colorful messages
-if [ "$MSGCOLOR" != 'NO' ] && [ "$MSGCOLOR" != 'ALWAYS' ]; then
+if [ "${MSGCOLOR:-YES}" = 'YES' ]; then
 	if [ ! -t 1 ]; then # but check that we output to a terminal
 		export MSGCOLOR='NO'
 	fi

test/integration/run-tests

@@ -1,12 +1,7 @@
 #!/bin/sh
 set -e
 
-FAIL=0
-PASS=0
-ALL=0
-
-FAILED_TESTS=""
-DIR=$(readlink -f $(dirname $0))
+TESTTORUN=''
 while [ -n "$1" ]; do
 	if [ "$1" = "-q" ]; then
 		export MSGLEVEL=2
@@ -14,6 +9,19 @@ while [ -n "$1" ]; do
 		export MSGLEVEL=4
 	elif [ "$1" = '--color=no' ]; then
 		export MSGCOLOR='NO'
+	elif [ "$1" = '--color=yes' ]; then
+		export MSGCOLOR='YES'
+	elif [ "$1" = '--color' ]; then
+		export MSGCOLOR="$(echo "$2" | tr 'a-z' 'A-Z')"
+		shift
+	elif [ "$1" = '--level' ]; then
+		export MSGLEVEL=$2
+		shift
+	elif [ "$1" = '-j' ]; then
+		APT_TEST_JOBS=$2
+		shift
+	elif [ -x "$1" ]; then
+		TESTTORUN="$1"
 	else
 		echo >&2 "WARNING: Unknown parameter »$1« will be ignored"
 	fi
@@ -21,7 +29,7 @@ while [ -n "$1" ]; do
 done
 export MSGLEVEL="${MSGLEVEL:-3}"
 
-if [ "$MSGCOLOR" != 'NO' ]; then
+if [ "${MSGCOLOR:-YES}" = 'YES' ]; then
 	if [ ! -t 1 ]; then # but check that we output to a terminal
 		export MSGCOLOR='NO'
 	fi
@@ -36,20 +44,64 @@ else
 	CRESET=''
 fi
 
-TOTAL="$(run-parts --list $DIR | grep '/test-' | wc -l)"
-for testcase in $(run-parts --list $DIR | grep '/test-'); do
+if [ -n "$TESTTORUN" ]; then
+	# collecting the output of one test to have it together
+	OUTPUT="$(mktemp)"
+	{
+		if [ "$MSGLEVEL" -le 2 ]; then
+			printf "${CTEST}Testcase ${CHIGH}${TESTTORUN##*/}${CRESET}: "
+		else
+			printf "${CTEST}Run Testcase ${CHIGH}${TESTTORUN##*/}${CRESET}\n"
+		fi
+		if ! "$TESTTORUN"; then
+			FAIL='yes'
+			if [ "$MSGLEVEL" -le 2 ]; then
+				printf >&2 "\n${CHIGH}Running ${TESTTORUN##*/} -> FAILED${CRESET}"
+			else
+				echo >&2 "${CHIGH}Running ${TESTTORUN##*/} -> FAILED${CRESET}"
+			fi
+		fi
+		if [ "$MSGLEVEL" -le 2 ]; then
+			echo
+		fi
+	} >"$OUTPUT" 2>&1
+	# without we end up getting stepped output 'randomly'
+	stty sane
+	cat >&2 "$OUTPUT"
+	stty sane
+	if [ "$FAIL" = 'yes' ]; then
+		exit 1
+	else
+		exit 0
+	fi
+fi
+
+FAIL=0
+PASS=0
+ALL=0
+FAILED_TESTS=""
+DIR="$(readlink -f "$(dirname "$0")")"
+TESTLIST="$(run-parts --list "$DIR" --regex '^test-.*$')"
+if [ -n "$APT_TEST_JOBS" ]; then
+	if [ "$MSGCOLOR" != 'NO' ]; then
+		export MSGCOLOR='ALWAYS'
+	fi
+	exec parallel -j "$APT_TEST_JOBS" "$0" -- $(echo "$TESTLIST")
+fi
+TOTAL="$(echo "$TESTLIST" | wc -l)"
+for testcase in $TESTLIST; do
 	if [ "$MSGLEVEL" -le 2 ]; then
-		printf "($(($ALL+1))/${TOTAL}) ${CTEST}Testcase ${CHIGH}$(basename ${testcase})${CRESET}: "
+		printf "($(($ALL+1))/${TOTAL}) ${CTEST}Testcase ${CHIGH}${testcase##*/}${CRESET}: "
 	else
-		printf "${CTEST}Run Testcase ($(($ALL+1))/${TOTAL}) ${CHIGH}$(basename ${testcase})${CRESET}\n"
+		printf "${CTEST}Run Testcase ($(($ALL+1))/${TOTAL}) ${CHIGH}${testcase##*/}${CRESET}\n"
 	fi
 	if ! ${testcase}; then
 		FAIL=$((FAIL+1))
-		FAILED_TESTS="$FAILED_TESTS $(basename $testcase)"
+		FAILED_TESTS="$FAILED_TESTS ${testcase##*/}"
 		if [ "$MSGLEVEL" -le 2 ]; then
-			printf >&2 "\n${CHIGH}Running $(basename $testcase) -> FAILED${CRESET}"
+			printf >&2 "\n${CHIGH}Running ${testcase##*/} -> FAILED${CRESET}"
 		else
-			echo >&2 "${CHIGH}Running $(basename $testcase) -> FAILED${CRESET}"
+			echo >&2 "${CHIGH}Running ${testcase##*/} -> FAILED${CRESET}"
 		fi
 	else
 		PASS=$((PASS+1))