diff --git a/mk/scripts.mk b/mk/scripts.mk
index 3021c92c..146b56a5 100644
--- a/mk/scripts.mk
+++ b/mk/scripts.mk
@@ -43,6 +43,7 @@ realinstall: ${BIN} ${CONF} ${CONF_APPEND}
 install: all realinstall ${INSTALLAFTER}
 
 check test::
+	@if test -e runtests.sh ; then ./runtests.sh || exit $$? ; fi
 
 # A lot of scripts don't have anything to clean
 # Also, some rm implentation require a file argument regardless of error
diff --git a/sh/Makefile b/sh/Makefile
index bd55cbda..2f10ef53 100644
--- a/sh/Makefile
+++ b/sh/Makefile
@@ -18,3 +18,6 @@ _installafter:
 	@# Put functions.sh into the init.d dir so 3rd party apps don't have to
 	@# be multilib aware
 	ln -snf ${PREFIX}/${RC_LIB}/sh/functions.sh ${DESTDIR}/${PREFIX}/${INITDIR} || exit $$?
+
+check test::
+	./runtests.sh
diff --git a/sh/runtests.sh b/sh/runtests.sh
new file mode 100755
index 00000000..d0d6a17d
--- /dev/null
+++ b/sh/runtests.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+top_srcdir=${top_srcdir:-..}
+. ${top_srcdir}/test/setup_env.sh
+
+ret=0
+
+tret=0
+ebegin "Testing yesno()"
+for f in yes YES Yes true TRUE True 1 ; do
+	if ! yesno ${f} ; then
+		((tret+=1))
+		echo "!${f}!"
+	fi
+done
+for f in no NO No false FALSE False 0 ; do
+	if yesno ${f} ; then
+		((tret+=1))
+		echo "!${f}!"
+	fi
+done
+eend ${tret}
+((ret+=tret))
+
+exit ${ret}
diff --git a/src/test/Makefile b/src/test/Makefile
index c3e879ea..d7fde60f 100644
--- a/src/test/Makefile
+++ b/src/test/Makefile
@@ -3,7 +3,7 @@ all:
 install:
 
 check test::
-	./symbols.sh
+	./runtests.sh
 
 clean:
 	rm -f *.out
diff --git a/src/test/symbols.sh b/src/test/runtests.sh
similarity index 87%
rename from src/test/symbols.sh
rename to src/test/runtests.sh
index 56fe0489..47bac3b1 100755
--- a/src/test/symbols.sh
+++ b/src/test/runtests.sh
@@ -1,11 +1,7 @@
 #!/bin/sh
 
 top_srcdir=${top_srcdir:-../..}
-srcdir=${builddir:-.}
-top_builddir=${top_srcdir:-../..}
-builddir=${builddir:-.}
-
-. ${top_srcdir}/sh/functions.sh
+. ${top_srcdir}/test/setup_env.sh
 
 libeinfo_srcdir="${srcdir}/../libeinfo"
 libeinfo_builddir="${builddir}/../libeinfo"
@@ -14,11 +10,6 @@ librc_builddir="${builddir}/../librc"
 rc_srcdir="${srcdir}/../rc"
 rc_builddir="${builddir}/../rc"
 
-make -s -C ${rc_builddir} links
-
-export LD_LIBRARY_PATH=${libeinfo_builddir}:${librc_builddir}:${LD_LIBRARY_PATH}
-export PATH=${rc_builddir}:${PATH}
-
 checkit() {
 	local base=$1; shift
 	echo "$@" | tr ' ' '\n' > ${base}.out
diff --git a/test/setup_env.sh b/test/setup_env.sh
new file mode 100755
index 00000000..96fdf9d2
--- /dev/null
+++ b/test/setup_env.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+if [ -z "${top_srcdir}" ] ; then
+	echo "You must set top_srcdir before sourcing this file" 1>&2
+	exit 1
+fi
+
+srcdir=${srcdir:-.}
+top_builddir=${top_builddir:-${top_srcdir}}
+builddir=${builddir:-${srcdir}}
+
+export LD_LIBRARY_PATH=${top_builddir}/src/libeinfo:${top_builddir}/src/librc:${LD_LIBRARY_PATH}
+export PATH=${top_builddir}/src/rc:${PATH}
+
+${MAKE:-make} -s -C ${top_srcdir}/src/rc links
+
+. ${top_srcdir}/sh/functions.sh
+
+if [ $? -ne 0 ] ; then
+	echo "Sourcing functions.sh failed !?" 1>&2
+	exit 1
+fi
diff --git a/test/skel.runtests.sh b/test/skel.runtests.sh
new file mode 100755
index 00000000..cda20027
--- /dev/null
+++ b/test/skel.runtests.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+# top_srcdir=${top_srcdir:-SET/THIS/PATH/OK!?}
+. ${top_srcdir}/test/setup_env.sh
+