Bugfix: Fix the issue caused by serializing (#649)

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### Linked GitHub issue ID: #  

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- [x] Bugfix
- [ ] Feature
- [ ] Technical design
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Author: zhou9584

common/src/main/java/com/microsoft/hydralab/common/entity/common/Task.java

@@ -85,6 +85,10 @@ public class Task implements Serializable {
     @Transient
     private boolean disableRecording = false;
 
+    @Transient
+    @Deprecated
+    private List<TestRun> deviceTestResults = taskRunList;
+
     public synchronized void addTestedDeviceResult(TestRun deviceTestResult) {
         taskRunList.add(deviceTestResult);
     }
@@ -213,11 +217,6 @@ public interface TriggerType {
         String Schedule = "Schedule";
     }
 
-    @Deprecated
-    public List<TestRun> getDeviceTestResults() {
-        return taskRunList;
-    }
-
     @Deprecated
     public int getTestDevicesCount() {
         return deviceCount;

common/src/test/java/com/microsoft/hydralab/common/util/SerializeUtilTest.java

@@ -3,6 +3,8 @@
 import com.alibaba.fastjson.JSONArray;
 import com.alibaba.fastjson.JSONObject;
 import com.microsoft.hydralab.common.entity.common.Message;
+import com.microsoft.hydralab.common.entity.common.Task;
+import com.microsoft.hydralab.common.entity.common.TestRun;
 import com.microsoft.hydralab.common.test.BaseTest;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
@@ -54,4 +56,23 @@ void testJsonArraySerialize() {
         Assertions.assertEquals(str1, str2, "Serialize error!");
         Assertions.assertEquals(str1, str3, "Serialize error!");
     }
+
+    @Test
+    void testConvertTask(){
+        Task task = new Task();
+        TestRun testRun = new TestRun();
+        testRun.setTestTaskId("testTaskId");
+        task.setErrorMsg("testErrorMsg");
+        task.setDeviceCount(2);
+        task.getTaskRunList().add(testRun);
+        Message msg = new Message();
+        msg.setBody(task);
+        byte[] data = SerializeUtil.messageToByteArr(msg);
+        Message msg2 = SerializeUtil.byteArrToMessage(data);
+        Assertions.assertTrue(msg2.getBody() instanceof Task, "Serialize error!");
+        Assertions.assertTrue("testTaskId".equals(((Task) msg2.getBody()).getTaskRunList().get(0).getTestTaskId()), "Serialize error!");
+        Assertions.assertTrue("testErrorMsg".equals(((Task) msg2.getBody()).getErrorMsg()), "Serialize error!");
+        Assertions.assertTrue(2 == ((Task) msg2.getBody()).getDeviceCount(), "Serialize error!");
+
+    }
 }