Make source_set() detect empty setup search path; add test

travis-test.sh

@@ -50,6 +50,7 @@ fn_exists add_dependency || die "function add_dependency missing from SCRIPTDIR/
 # test source_set()
 ######################################################################
 
+SETUP_DIRS= source_set test01 | grep -q "(SETUP_PATH) is empty" || die "empty search path not detected"
 source_set xxdoesnotexistxx | grep -q "does not exist" || die "missing setup file not detected"
 source_set test01 | grep -q "Loading setup file" || die "test01 setup file not found"
 

travis/utils.sh

@@ -29,6 +29,11 @@ source_set() {
   local set_file=$1
   local set_dir
   local found=0
+  if [ -z "${SETUP_DIRS}" ]
+  then
+    echo "Search path for setup files (SETUP_PATH) is empty"
+    [ "$UTILS_UNITTEST" ] || exit 1
+  fi
   for set_dir in ${SETUP_DIRS}
   do
     if [ -e $set_dir/$set_file.set ]