Put tests in more logical order.

Lib/collections.py

@@ -169,10 +169,10 @@ class OrderedDict(dict, MutableMapping):
 
     def __repr__(self):
         'od.__repr__() <==> repr(od)'
-        if self.__in_repr:
-            return '...'
         if not self:
             return '%s()' % (self.__class__.__name__,)
+        if self.__in_repr:
+            return '...'
         self.__in_repr = True
         try:
             result = '%s(%r)' % (self.__class__.__name__, list(self.items()))