Verifying that your cookbooks really work when converging a node is essential. Only if you can trust your cookbooks are you ready to run them any time on your production servers.
Test Kitchen is Chef's integration testing framework. It enables you to write tests, which run after a VM is instantiated and converged using your cookbook. Your tests run in that VM and can verify that everything works as expected.
This is in contrast to ChefSpec, which only simulates a Chef run. Test Kitchen boots up a real node and runs Chef on it. Your tests see the real thing.
Let's see how you can write such integration tests for your cookbooks.
Make sure you have a cookbook named
my_cookbook as described ...