Hello there! Let me answer your questions one by one:
1. Denodo Testing Tool allows Denodo users to easily automate the testing of their data virtualization scenarios, both during the development of their virtualized solutions and during their maintenance. It is also a lightweight standalone application, executable from the command line with a simple user interface. Tests are specified in text files and organized in folders, no Java programming needed and executed in a completely automated manner. Test set executions can be integrated as a part of existing continuous integration (CI) processes with Jenkins or any other CI tool. As opposed to SOAP UI / Postman, this solution is strongly recommended for his integration with Denodo, simplicity and efficiency. With a support account you will be able to download it from the Support Site.
2. You can still use Jenkins or Gitlab CI for your CI but Denodo 7 with the Solution Manager makes it easier to manage large Denodo Platform deployments (check the [Administration Guide](https://community.denodo.com/docs/html/browse/7.0/solution_manager/administration/preface)), taking into account requirements of high availability and load balancing. This will improve the ease of management and make fail-proof automatic deployments.
3. Yes, QuerySurge can connect via JDBC using the connection extensibility feature. Once connected you will be able to use the Denodo Driver with standard SQL to query your data from QuerySurge.
Hope you find this helpful!