Are we gonna get a Test Server?

In short, I want to know if we are going to have a test server because I want to see how clothes look on my characters before I buy them. Also, I want to see what all the mounts look like when used. This would be helpful If we have access to the test server when the game comes out.

As long as the test serve doesn’t allow access to Raid content, for the people who aim to participate in World’s First Races (myself included).