After the new installation of Denodo Platform 6.0 and importing the metadata into it, I would suggest you the below options to test the new installation.
1. You can follow the steps provided in the section [Test the New Denodo Platform Installation](https://community.denodo.com/docs/html/browse/6.0/platform/migration/test_the_new_denodo_platform_installation) of the Denodo Platform Migration Guide
1. You can download [Denodo Testing Tool](https://support.denodo.com/resources/denodo-connect/details/1300) from the Denodo support website and follow the steps provided in the [Denodo Testing Tool - User Manual](https://community.denodo.com/docs/html/document/denodoconnects/6.0/Denodo%20Testing%20Tool%20-%20User%20Manual). With the Denodo Testing Tool, you will be able to automate the testing of your Data Virtualization scenarios. This is a lightweight standalone tool with a very simple user interface where you can easily create and execute your test sets in an automated way.
Additionally, you can also refer to Denodo Knowledge Base article [Denodo Load Testing with Apache JMeter](https://community.denodo.com/kb/view/document/Denodo%20Load%20Testing%20with%20Apache%20JMeter?category=Performance+%26+Optimization) that explains how to configure Apache JMeter to do performance tests on the Denodo Platform.
Hope this helps!