When it comes right down to it, it isn't really a test, it's a confrontation. It's a struggle of will and resolve; a tug-of-war. If the citizens will be testing the state's will to enforce unconstitutional law via this protest, it is only because the state has already tested the resolve of free men and drawn this response.
If this happens as planned (and I pray it does) Either one side will lose that struggle, or blood will be spilled. It's as simple as that. Somebody has to back down. I pray it isn't liberty.