My apologies for the slow reply.
The test suite isn't very far along, but I've put what there is in a
google code project:
http://code.google.com/p/phpunit-inspekt/
The tests run against Inspekt v0.3 and v0.3.1. The test suite
currently reports three failures, two of which I believe to be
erroneous (they involve Inspekt::isHostname() error conditions--I'll
try to them sorted out soon). The other failure is probably real, in
that it reveals that Inspekt::isUri() returns an integer 1 rather than
a boolean TRUE.
I'll update the project site as I make progress on the test suite.