Do neutron-client unit-tests verify the V2_0 code

This may be gross ignorance on my part but...

Using https://review.openstack.org/openstack/python-neutronclient as of 1-Feb-2014

When I execute the unit-tests for python-neutronclient by running 'tox' at the top-level it appears that the tests within test_cli20.py verify the code in neutronclient/client.py and NOT neutronclient/v2_0/client.py.

I have verified this by modifying the neutronclient/v2_0/client.py code to force a failure and have seen no impact on the tests, whereas if I modify the neutronclient/client.py I can force failures.

From the test-naming I was assuming that the v2_0 version of the code would be verified?
Is there an alternate mechanism I should be using to run unit tests against the v2_0 version of the code?

Or am I completely off track and the v2_0 code no longer needs verification?

Thanks for your help,
Mark