Chinese proficiency tests in Japan

[Honyakusha]

Hi, this is my first post here, so please be gentle.

I'm not sure where this sort of post should go, so I just picked this forum in the hope that this would be the most appropriate place. My question is: Is anyone here familiar with the Chinese proficiency tests offered in Japan? Here we have, in addition to the HSK, the 中国語検定試験　http://www.chuken.gr.jp/

and the Test of Communicative Chinsese.

http://www.tecc-jp.com/index.html

Has anyone perchance ever taken one of these or even heard from someone who has? I'm interested in whatever people happen to know about any of these. (I'm assuming I can find heaps about the HSK by digging around.) Apologies if this is overly broad.

And to the administrator, let me just say that this is a really cool site.

TIA