Import a test for code coverage in tests

It is currently disabled by default.

tests/coverage.sh

@@ -0,0 +1,124 @@
+#!/bin/sh
+#$Id$
+#Copyright (c) 2018 Pierre Pronchery <khorben@defora.org>
+#This file is part of DeforaOS System libSystem
+#All rights reserved.
+#
+#Redistribution and use in source and binary forms, with or without
+#modification, are permitted provided that the following conditions are
+#met:
+#
+#1. Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+#
+#2. Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+#
+#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+#IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+#TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+#PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+#TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+#PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+#LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+#NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+
+#variables
+CFLAGS=
+LDFLAGS=
+PROGNAME="coverage.sh"
+TARGET="tests.log"
+#executables
+CC="gcc -fprofile-arcs -ftest-coverage"
+DATE="date"
+FIND="find"
+GCOV="gcov"
+MAKE="make"
+MKDIR="mkdir"
+MKTEMP="mktemp"
+RM="rm -f"
+
+
+#coverage
+_coverage()
+{
+	#create a temporary directory
+	tmpdir=$($MKTEMP -d)
+	if [ $? -ne 0 ]; then
+		return 2
+	fi
+	#build the project in a separate directory
+	$MKDIR "$tmpdir/src" "$tmpdir/tests" &&
+	(cd ../src && $MAKE CC="$CC" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" OBJDIR="$tmpdir/src/") &&
+	$MAKE CC="$CC" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" OBJDIR="$tmpdir/tests/" "$tmpdir/tests/$TARGET"
+	res=$?
+	#look for any code executed
+	$FIND "$tmpdir/tests" -name '*.gcda' | while read filename; do
+		echo "${filename%.gcda}.c:"
+		$GCOV -n "${filename%.gcda}.gcno"
+		#TODO output the GCOV file
+	done
+	$RM -r -- "$tmpdir"
+	return $res
+}
+
+
+#date
+_date()
+{
+	if [ -n "$SOURCE_DATE_EPOCH" ]; then
+		TZ=UTC $DATE -d "@$SOURCE_DATE_EPOCH" '+%a %b %d %T %Z %Y'
+	else
+		$DATE
+	fi
+}
+
+
+#usage
+_usage()
+{
+	echo "Usage: $PROGNAME [-c] target..." 1>&2
+	return 1
+}
+
+
+#main
+clean=0
+while getopts "cP:" name; do
+	case "$name" in
+		c)
+			clean=1
+			;;
+		P)
+			#XXX ignored
+			;;
+		?)
+			_usage
+			exit $?
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+if [ $# -eq 0 ]; then
+	_usage
+	exit $?
+fi
+
+while [ $# -ne 0 ]; do
+	target="$1"
+	shift
+
+	[ "$clean" -eq 0 ]					|| break
+
+	(_date; echo) > "$target"
+	echo "Gathering test coverage:" 1>&2
+	_coverage >> "$target" || exit 2
+	echo "Gathered test coverage" 1>&2
+done
+exit 0

tests/project.conf

@@ -1,9 +1,9 @@
-targets=array,clint.log,config,error,event,fixme.log,includes,pylint.log,string,variable,tests.log
+targets=array,clint.log,config,coverage.log,error,event,fixme.log,includes,pylint.log,string,variable,tests.log
 cppflags_force=-I ../include
 cflags=-W -Wall -g -O2 -fPIE -D_FORTIFY_SOURCE=2 -fstack-protector
 ldflags_force=-L$(OBJDIR)../src -Wl,-rpath,$(OBJDIR)../src -lSystem
 ldflags=-pie -Wl,-z,relro -Wl,-z,now
-dist=Makefile,clint.sh,config.conf,config-noeol.conf,fixme.sh,pkgconfig.sh,pylint.sh,python.sh,tests.sh
+dist=Makefile,clint.sh,config.conf,config-noeol.conf,coverage.sh,fixme.sh,pkgconfig.sh,pylint.sh,python.sh,tests.sh
 
 [array]
 type=binary
@@ -24,6 +24,12 @@ sources=config.c
 [config.c]
 depends=../src/config.c
 
+[coverage.log]
+type=script
+script=./coverage.sh
+enabled=0
+depends=coverage.sh
+
 [error]
 type=binary
 sources=error.c