tests: add assert

Author: karel-rehor

src/main/java/com/influxdb/v3/client/query/QueryOptions.java

@@ -220,8 +220,6 @@ protected QueryOptions clone() {
             grpcOptsBuilder.withMaxInboundMessageSize(this.grpcCallOptions.getMaxInboundMessageSize());
             grpcOptsBuilder.withMaxOutboundMessageSize(this.grpcCallOptions.getMaxOutboundMessageSize());
             clone.grpcCallOptions = grpcOptsBuilder.build();
-        } else {
-            clone.setGrpcCallOptions(null);
         }
         return clone;
     }

src/test/java/com/influxdb/v3/client/query/QueryOptionsTest.java

@@ -266,7 +266,9 @@ public void queryOptionsCloneTest() {
         queryOptions.setGrpcCallOptions(grpcCallOption);
 
         QueryOptions clone = queryOptions.clone();
+
         Assertions.assertThat(clone).isEqualTo(queryOptions);
+        Assertions.assertThat(queryOptions.hashCode()).isEqualTo(clone.hashCode());
         // not the same object
         Assertions.assertThat(queryOptions == clone).isFalse();
         // deep copy grpc options