fix codecov

Author: shuwenwei

…e/source/LastQueryScanNodeSerdeTest.java …ner/node/source/SourceNodeSerdeTest.javaiotdb-core/datanode/src/test/java/org/apache/iotdb/db/queryengine/plan/planner/node/source/LastQueryScanNodeSerdeTest.java renamed to iotdb-core/datanode/src/test/java/org/apache/iotdb/db/queryengine/plan/planner/node/source/SourceNodeSerdeTest.java iotdb-core/datanode/src/test/java/org/apache/iotdb/db/queryengine/plan/planner/node/source/LastQueryScanNodeSerdeTest.java renamed to iotdb-core/datanode/src/test/java/org/apache/iotdb/db/queryengine/plan/planner/node/source/SourceNodeSerdeTest.java

@@ -24,6 +24,7 @@
 import org.apache.iotdb.db.queryengine.plan.planner.node.PlanNodeDeserializeHelper;
 import org.apache.iotdb.db.queryengine.plan.planner.plan.node.PlanNodeId;
 import org.apache.iotdb.db.queryengine.plan.planner.plan.node.source.LastQueryScanNode;
+import org.apache.iotdb.db.queryengine.plan.planner.plan.node.source.ShowQueriesNode;
 
 import org.apache.tsfile.enums.TSDataType;
 import org.apache.tsfile.write.schema.MeasurementSchema;
@@ -34,9 +35,9 @@
 
 import static org.junit.Assert.assertEquals;
 
-public class LastQueryScanNodeSerdeTest {
+public class SourceNodeSerdeTest {
   @Test
-  public void test() throws IllegalPathException {
+  public void testLastQueryScanNode() throws IllegalPathException {
     LastQueryScanNode node =
         new LastQueryScanNode(
             new PlanNodeId("test"),
@@ -69,4 +70,19 @@ public void test() throws IllegalPathException {
     byteBuffer.flip();
     assertEquals(PlanNodeDeserializeHelper.deserialize(byteBuffer), node);
   }
+
+  @Test
+  public void testShowQueriesNode() throws IllegalPathException {
+    ShowQueriesNode node = new ShowQueriesNode(new PlanNodeId("test"), null, "root");
+
+    ByteBuffer byteBuffer = ByteBuffer.allocate(2048);
+    node.serialize(byteBuffer);
+    byteBuffer.flip();
+    assertEquals(PlanNodeDeserializeHelper.deserialize(byteBuffer), node);
+    node = new ShowQueriesNode(new PlanNodeId("test"), null, "root");
+    byteBuffer = ByteBuffer.allocate(2048);
+    node.serialize(byteBuffer);
+    byteBuffer.flip();
+    assertEquals(PlanNodeDeserializeHelper.deserialize(byteBuffer), node);
+  }
 }