[CE-241] Test build error of license check

Change-Id: Ib8110c4db8446346a296aa1cc4a4cd0e1be0df92
Signed-off-by: sally <lujjiang@cn.ibm.com>

scripts/check_license.sh

@@ -5,20 +5,26 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-CHECK=$(git diff --name-only HEAD * | grep -v .json$ | grep -v .jpg$ | grep -v .JPG$ | grep -v .png$ | grep -v .ico$ \
+CHECK=$(git diff --name-only HEAD * | grep -v check_license.sh | grep -v .json$ | grep -v .jpg$ | grep -v .JPG$ | grep -v .png$ | grep -v .ico$ \
   | grep -v .graffle$ | grep -v .svg$ | grep -v .pug$ | grep -v .rst$ | grep -v .git \
   | grep -v .pem$ | grep -v .crt$ | grep -v .key$ | grep -v lib/ | grep -v fonts/ | grep -v .min.css$ \
   | grep -v .block$ | grep -v .less$ | grep -v crypto-config/ | grep -v .min.js$ \
   | grep -v .md$ | grep -v ^vendor/ | grep -v ^build/ | grep -v .pb.go$ | grep -v .txt | grep -v .env | sort -u)
+
 if [[ -z "$CHECK" ]]; then
   CHECK=$(git diff-tree --no-commit-id --name-only -r $(git log -2 \
-    --pretty=format:"%h") |  grep -v .json$ | grep -v .jpg$ | grep -v .JPG$ | grep -v .png$ | grep -v .ico$ \
+    --pretty=format:"%h") | grep -v check_license.sh | grep -v .json$ | grep -v .jpg$ | grep -v .JPG$ | grep -v .png$ | grep -v .ico$ \
   | grep -v .graffle$ | grep -v .svg$ | grep -v .pug$ | grep -v .rst$ | grep -v .git \
   | grep -v .pem$ | grep -v .crt$ | grep -v .key$ | grep -v lib/ | grep -v fonts/ | grep -v .min.css$ \
   | grep -v .block$ | grep -v .less$ | grep -v crypto-config/ | grep -v .min.js$ \
   | grep -v .md$ | grep -v ^vendor/ | grep -v ^build/ | grep -v .pb.go$ | grep -v .txt | grep -v .env | sort -u)
 fi
+
 echo "Checking committed files for SPDX-License-Identifier headers ..."
+if [ -z "$CHECK" ]; then
+   echo "All files have SPDX-License-Identifier headers"
+   exit 0
+fi
 missing=`echo $CHECK | xargs grep -L "SPDX-License-Identifier"`
 if [ -z "$missing" ]; then
    echo "All files have SPDX-License-Identifier headers"