diff --git a/client/src/test/java/com/vesoft/nebula/client/storage/MockUtil.java b/client/src/test/java/com/vesoft/nebula/client/storage/MockUtil.java
index 284a36201..17e95e8e8 100644
--- a/client/src/test/java/com/vesoft/nebula/client/storage/MockUtil.java
+++ b/client/src/test/java/com/vesoft/nebula/client/storage/MockUtil.java
@@ -23,6 +23,7 @@ public class MockUtil {
     public static List<DataSet> mockVertexDataSets() {
 
         List<byte[]> columnNames = new ArrayList<>();
+        columnNames.add("_vid".getBytes());
         columnNames.add("person._vid".getBytes());
         columnNames.add("person.boolean_col1".getBytes());
         columnNames.add("person.long_col2".getBytes());
@@ -35,6 +36,7 @@ public static List<DataSet> mockVertexDataSets() {
         // row 1
         List<Value> values1 = new ArrayList<>();
         values1.add(Value.sVal("Tom".getBytes()));
+        values1.add(Value.sVal("Tom".getBytes()));
         values1.add(Value.bVal(true));
         values1.add(Value.iVal(12));
         values1.add(Value.fVal(1.0));
@@ -43,7 +45,7 @@ public static List<DataSet> mockVertexDataSets() {
         values1.add(Value.dtVal(new DateTime((short) 2020, (byte) 1, (byte) 1, (byte) 12,
                 (byte) 10, (byte) 30, 100)));
         values1.add(Value.ggVal(new Geography(Geography.PTVAL,
-                new Point(new Coordinate(1.0,1.5)))));
+                new Point(new Coordinate(1.0, 1.5)))));
 
         List<Row> rows = new ArrayList<>();
         rows.add(new Row(values1));
diff --git a/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java b/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java
index a527daa82..601276957 100644
--- a/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java
+++ b/client/src/test/java/com/vesoft/nebula/client/storage/StorageClientTest.java
@@ -106,6 +106,7 @@ public void testScanVertexWithNoCol() {
                 }
             }
         }
+        System.out.println("count:" + count);
         assert (count == 5);
     }
 
@@ -172,6 +173,7 @@ public void testScanVertexWithCols() {
                 assert (Arrays.asList(18L, 20L, 23L, 15L, 25L).contains(tableRow.getLong(2)));
             }
         }
+        System.out.println("count:" + count);
         assert (count == 5);
     }
 
@@ -206,6 +208,7 @@ public void testScanVertexWithAllCol() {
             assert (Arrays.asList("name", "age").contains(result.getPropNames().get(2)));
             assert (result.isAllSuccess());
         }
+        System.out.println("count:" + count);
         assert (count == 5);
     }
 
@@ -270,6 +273,7 @@ public void testScanEdgeWithoutCol() {
                 }
             }
         }
+        System.out.println("count:" + count);
         assert (count == 5);
     }
 
@@ -341,6 +345,7 @@ public void testScanEdgeWithCols() {
                 assert (Arrays.asList(1.0, 2.1, 3.2, 4.5, 5.9).contains(tableRow.getDouble(3)));
             }
         }
+        System.out.println("count:" + count);
         assert (count == 5);
     }
 
@@ -380,6 +385,7 @@ public void testScanEdgeWithAllCols() {
                     .contains(result.getPropNames().get(3)));
             assert (result.isAllSuccess());
         }
+        System.out.println("count:" + count);
         assert (count == 5);
     }
 
@@ -501,6 +507,7 @@ private void assertIterator(ScanVertexResultIterator resultIterator) {
                 }
             }
         }
+        System.out.println("count:" + count);
         assert (count == 5);
     }
 }