How do you functional test your Commerce Kickstart 2.0 projects?
You can install the Commerce Kickstart 2 on your local environment and it would automatic have some data. If you do not know have a development environment I would recommend you to use Lazy Dubuntu (if you wish to build it on Ubuntu computer) or Acquia Dev Desktop 2 for Mac or Windows.

If you do not want to used your local environment you can use Pantheon to test it out for free.