test: add test for null field cases with BigIntVector

Author: NguyenHoangSon96

src/test/java/com/influxdb/v3/client/TestUtils.java

@@ -35,6 +35,7 @@
 import org.apache.arrow.flight.Ticket;
 import org.apache.arrow.memory.BufferAllocator;
 import org.apache.arrow.memory.RootAllocator;
+import org.apache.arrow.vector.BigIntVector;
 import org.apache.arrow.vector.VarCharVector;
 import org.apache.arrow.vector.VectorSchemaRoot;
 import org.apache.arrow.vector.types.pojo.ArrowType;
@@ -94,8 +95,9 @@ public static VectorSchemaRoot generateVectorSchemaRoot(final int fieldCount, fi
     public static VectorSchemaRoot generateVectorSchemaRootWithNull() {
         Field normalField = new Field("normalField", FieldType.nullable(new ArrowType.Utf8()), null);
         Field nullField = new Field("nullField", FieldType.nullable(new ArrowType.Utf8()), null);
+        Field nullField1 = new Field("nullField1", FieldType.nullable(new ArrowType.Int(64, true)), null);
 
-        Schema schema = new Schema(List.of(normalField, nullField));
+        Schema schema = new Schema(List.of(normalField, nullField, nullField1));
         VectorSchemaRoot vectorSchemaRoot = VectorSchemaRoot.create(schema, new RootAllocator(Long.MAX_VALUE));
 
         VarCharVector vector = (VarCharVector) vectorSchemaRoot.getVector(normalField);
@@ -106,6 +108,10 @@ public static VectorSchemaRoot generateVectorSchemaRootWithNull() {
         vector.allocateNew(1);
         vector.setNull(0);
 
+        BigIntVector intVector = (BigIntVector) vectorSchemaRoot.getVector(nullField1);
+        intVector.allocateNew(1);
+        intVector.setNull(0);
+
         vectorSchemaRoot.setRowCount(1);
         return vectorSchemaRoot;
     }