Peak is right, there are DOZENS of clinical studies of the abuse potential of tianeptine. Not only that, but if you're already prone to addiction it can increase your propensity towards those types of behavior.
You can read some abstracts at the links below.
If you're interested in learning more just enter the terms "tianeptine abuse" into the search at http://scholar.google.com
In a lot of cases you can't read the full articles, but you can usually get a lot of information, including the general findings of the study, in the abstract and often if you bring a laptop to a university or public library they have access to the full text that you can read directly or download in pdf form.