Update ShellTaskTest.java

dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/worker/task/shell/ShellTaskTest.java

@@ -99,6 +99,8 @@ public class ShellTaskTest {
     public void testComplementData() throws Exception {
         shellTask = new ShellTask(taskExecutionContext, logger);
         shellTask.init();
+        shellCommandExecutor.isSuccessOfYarnState(new ArrayList<>());
+        shellCommandExecutor.isSuccessOfYarnState(null);
         PowerMockito.when(shellCommandExecutor.run(anyString())).thenReturn(commandExecuteResult);
         shellTask.handle();
     }