From Fedora Project Wiki
Description
Run Tempest test cases.
Setup
Assumes keystone, nova and glance are already configured and running.
Ensure nova is configured to allow resizing of instances on a single host:
$> echo 'allow_resize_to_same_host = True'
How to test
Run Tempest tests with nose:
$> nosetests tempest
Expected Results
The time taken to run the testsuite is quite variable, and ranges from ~20 minutes on an EC2 large instance to circa twice that on a VM with 2Gb RAM and 2 CPUs running on a moderately powered laptop.
The majority of the tests should pass, though you may hit some failures due to timeout or resource starvation (for example breaching the floating IPs quota).