diff --git a/tests/units/backup-cron/test.sh b/tests/units/backup-cron/test.sh
index 0ae5574..b384334 100644
--- a/tests/units/backup-cron/test.sh
+++ b/tests/units/backup-cron/test.sh
@@ -34,6 +34,10 @@ function test() {
 
     # wait 120s
     while [[ "${TIMER}" -lt 120 ]]; do
+        if [[ $((TIMER % 20)) -eq 0 ]]; then
+            docker logs "${TEST_CONTAINER_NAME}" | tail -10
+        fi
+
         if [[ -f "${BACKUP_FILE}" && -s "${BACKUP_FILE}" ]]; then
             SUCCESS=TRUE
             break
diff --git a/tests/units/env-priority/test.sh b/tests/units/env-priority/test.sh
index 8edfa18..4529e87 100644
--- a/tests/units/env-priority/test.sh
+++ b/tests/units/env-priority/test.sh
@@ -86,22 +86,22 @@ function test() {
 
     ls -l "${TEST_OUTPUT_DIR}"
 
-    7z l -p"${PASSWORD1}" "${BACKUP_FILE1}"
+    7z t -p"${PASSWORD1}" "${BACKUP_FILE1}"
     if [[ $? != 0 ]]; then
         ((FAILED_NUM++))
     fi
 
-    7z l -p"${PASSWORD2}" "${BACKUP_FILE2}"
+    7z t -p"${PASSWORD2}" "${BACKUP_FILE2}"
     if [[ $? != 0 ]]; then
         ((FAILED_NUM++))
     fi
 
-    7z l -p"${PASSWORD3}" "${BACKUP_FILE3}"
+    7z t -p"${PASSWORD3}" "${BACKUP_FILE3}"
     if [[ $? != 0 ]]; then
         ((FAILED_NUM++))
     fi
 
-    7z l -p"${PASSWORD4}" "${BACKUP_FILE4}"
+    7z t -p"${PASSWORD4}" "${BACKUP_FILE4}"
     if [[ $? != 0 ]]; then
         ((FAILED_NUM++))
     fi