On the absence of qualifications, licensing and certification for programmers--I think it doesnt exist because its not yet an effective indicator.

People who can pass the tests can easily add no value (or negative value) to a project

People who've never bothered with the tests can quickly build great things, rescue projects, and fix the bad code/designs/patterns of test-passers.

If certifications/licensing/qualifications becomes and indicator of value in the future, I'm sure it will be adopted in the market then.