WCS script testing the exception response

In the WCS 1.0.0 test suite, I've seen something strange in the test called: wcs1-0-0:basic_service_elements-service_exceptions-1

The last test done is (line 1836 in ctl/wcs.xml):

But if I understand well, the test is supposed to return an exception report, because there is a missing parameter in the request.
Consequently the WCS webservice I'm testing returns a ServiceExceptionReport tag, containing a ServiceException tag.

This CTL condition should be the opposite, to test that the response does not contain a ServiceExceptionReport tag.

For me the correct condition would be:

Do you think there is a mistake here ?

Thanks,
Cédric