I have integration tests for a Jangle connector in Jangle's SVN repo.
They're written using Ruby Test::Unit, so you'll need a Ruby
interpreter to run them. You'll also need the json gem, since, well,
a connector test that doesn't json isn't going to be able to test
much.
They're in trunk/validators/connector_test.rb
Grab the script and run (from the commandline):
ruby connector_test.rb {base url of your jangle connector}
Happy hacking,
-Ross.