Check if post type has term

I have a custom post type, called articles. I’ve also created a taxonomy called subject. Each article has a subject, just like posts have categories.

Now to the problem. When I’m on the page-articles.php (page-slug.php), it has to check which subject the article has. How can I do that?! I’ve been surfin’ the web for days without finding any solution.

What I’m thinking is that in some way I have to check the taxonomy subject if it matches a criteria. Like:

if (is_term('news', 'subject'){
// do this
}

But I really can’t figure out how it works! The is_term doesn’t do that, and I can’t find any other function either.

if( has_term( 'jazz', 'genre' ) ) {
    // do something
}

http://codex.wordpress.org/Function_Reference/has_term