diff --git a/.travis.yml b/.travis.yml
index b460ad05b049a6fa5ddd043a7682d81f3abc947f..72970bc1e0d75e08ded92062c78e40f53fd5dc57 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -163,7 +163,7 @@ matrix:
 
           cd ${TRAVIS_BUILD_DIR}/tests
 
-          ./test-all.sh $TRAVIS_EVENT_TYPE
+          ./test-all.sh $TRAVIS_EVENT_TYPE COVER
 
           TEST_RESULT=$?
 
diff --git a/tests/test-all.sh b/tests/test-all.sh
index 93bfa7a4263e70f01ce206efa4a9e8a8b6674fc8..e58a6f51327c066b526d0332a2c7b1678d7cc4d4 100755
--- a/tests/test-all.sh
+++ b/tests/test-all.sh
@@ -21,11 +21,12 @@ fi
 echo -e "${GREEN} ### Total $totalSuccess TSIM case(s) succeed! ### ${NC}"
 
 totalFailed=`grep 'failed\|fault' out.txt | wc -l`
-echo -e "${RED} ### Total $totalFailed TSIM case(s) failed! ### ${NC}"
+# echo -e "${RED} ### Total $totalFailed TSIM case(s) failed! ### ${NC}"
 
 if [ "$totalFailed" -ne "0" ]; then
-#  echo -e "${RED} ### Total $totalFailed TSIM case(s) failed! ### ${NC}"
-  exit $totalFailed
+  echo -e "${RED} ### Total $totalFailed TSIM case(s) failed! ### ${NC}"
+
+#  exit $totalFailed
 fi
 
 echo "### run Python script ###"
@@ -46,6 +47,7 @@ fi
 totalPyFailed=`grep 'failed\|fault' pytest-out.txt | wc -l`
 if [ "$totalPyFailed" -ne "0" ]; then
   echo -e "${RED} ### Total $totalPyFailed python case(s) failed! ### ${NC}"
-  exit $totalPyFailed
+#  exit $totalPyFailed
 fi
 
+exit $(($totalFailed + $totalPyFailed))