diff --git a/br/tests/br_file_corruption/run.sh b/br/tests/br_file_corruption/run.sh
index 6feb08f41e1f6..35a7698bb9fef 100644
--- a/br/tests/br_file_corruption/run.sh
+++ b/br/tests/br_file_corruption/run.sh
@@ -26,11 +26,24 @@ run_br --pd $PD_ADDR backup full -s "local://$TEST_DIR/$DB"
 
 filename=$(find $TEST_DIR/$DB -regex ".*.sst" | head -n 1)
 filename_temp=$filename"_temp"
+filename_bak=$filename"_bak"
 echo "corruption" > $filename_temp
 cat $filename >> $filename_temp
+
+# file lost
+mv $filename $filename_bak
+export GO_FAILPOINTS="github.com/pingcap/tidb/br/pkg/utils/set-import-attempt-to-one=return(true)"
+restore_fail=0
+run_br --pd $PD_ADDR restore full -s "local://$TEST_DIR/$DB" || restore_fail=1
+export GO_FAILPOINTS=""
+if [ $restore_fail -ne 1 ]; then
+    echo 'restore success' 
+    exit 1
+fi
+
+# file corruption
 mv $filename_temp $filename
 truncate --size=-11 $filename
-
 export GO_FAILPOINTS="github.com/pingcap/tidb/br/pkg/utils/set-import-attempt-to-one=return(true)"
 restore_fail=0
 run_br --pd $PD_ADDR restore full -s "local://$TEST_DIR/$DB" || restore_fail=1
diff --git a/br/tests/br_pitr/run.sh b/br/tests/br_pitr/run.sh
index 1ae66f17a1a5a..35143c0afa0b3 100644
--- a/br/tests/br_pitr/run.sh
+++ b/br/tests/br_pitr/run.sh
@@ -165,8 +165,22 @@ restart_services
 echo "corrupt a log file"
 filename=$(find $TEST_DIR/$PREFIX/log -regex ".*\.log" | grep -v "schema-meta" | tail -n 1)
 filename_temp=$filename"_temp"
+filename_bak=$filename"_bak"
 echo "corruption" > $filename_temp
 cat $filename >> $filename_temp
+
+# file lost
+mv $filename $filename_bak
+export GO_FAILPOINTS="github.com/pingcap/tidb/br/pkg/utils/set-import-attempt-to-one=return(true)"
+restore_fail=0
+run_br --pd $PD_ADDR restore point -s "local://$TEST_DIR/$PREFIX/log" --full-backup-storage "local://$TEST_DIR/$PREFIX/full" || restore_fail=1
+export GO_FAILPOINTS=""
+if [ $restore_fail -ne 1 ]; then
+    echo 'pitr success' 
+    exit 1
+fi
+
+# file corruption
 mv $filename_temp $filename
 truncate --size=-11 $filename
 export GO_FAILPOINTS="github.com/pingcap/tidb/br/pkg/utils/set-import-attempt-to-one=return(true)"