Move body test coverage

src/base.coffee

@@ -2,9 +2,10 @@ global.$game = {} if not global.$game
 global.$game.common = {} if not global.$game.common
 global.$game.common.move = (what, to)->
+  _ = require "underscore"
   what.location = global.$game.$nowhere if not what.location
   if what.location?.contents?
-    what.location.contents = what.location.contents.remove(what)
+    what.location.contents = _(what.location.contents).without(what)
   to.contents = [] if not to.contents
   to.contents.push what
   what.location = to