If I wanted to be able to write on a resume-type document that I was 'fluent' in a language, what sort of test could I take to prove it? Where could I get such a test? I know Duo offers an English test for French speakers, but I don't believe that would help much in my case. :)
Thanks in advance!
Maybe sign up for a course offered by a reputed institute (Alliance Francaise has many for French). They even offer testing and certification as well.
Another alternative may be to take a college level course, which should also be recognized by most employers.
I agree with SamoolTheSamosa, in the States, unless it was a requirement for your job, no one will even ask unless they were just curious and want to throw a sentence or two at you to test their own language skill. But, I realize this isn't true everywhere. I have a friend in Quebec Province, Canada and if you do not come into the interview speaking fluent French (or can not prove that you speak proficient French) you can not, I repeat, can not get most jobs. This is because by LAW one HAS to speak to other employees in French (an exception is working for specific English entities where everyone speaks English, like in certain churches, for example).