diff --git a/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/worker/shell/ShellCommandExecutorTest.java b/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/worker/shell/ShellCommandExecutorTest.java
index cdb76940a4..10778b85e0 100644
--- a/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/worker/shell/ShellCommandExecutorTest.java
+++ b/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/worker/shell/ShellCommandExecutorTest.java
@@ -133,6 +133,7 @@ public class ShellCommandExecutorTest {
                         }
                     };
                 }
+
                 @Override
                 public InputStream getInputStream() {
                     return new InputStream() {
@@ -142,18 +143,22 @@ public class ShellCommandExecutorTest {
                         }
                     };
                 }
+
                 @Override
                 public InputStream getErrorStream() {
                     return null;
                 }
+
                 @Override
                 public int waitFor() throws InterruptedException {
                     return 0;
                 }
+
                 @Override
                 public int exitValue() {
                     return 0;
                 }
+
                 @Override
                 public void destroy() {
                     logger.info("unit test");