Quickchannel supports VAST and VMAP tags for advertising. More specifically the Quickchannel players use the Google IMA SDK to play present ads.

This means that you can test that your VAST ad tag works on the Quickchannel platform on Google's test page or the Quickchannel VAST Inspector.

Note that Google's test page wants the VAST tag to be HTTPS to test it. If your tag is HTTP it is usually enough to replace "http" with "https" at the start of the link since most ad platforms should support HTTPS.