.

wcfs/internal/xbtree_test.py

@@ -423,6 +423,7 @@ def test_restructure():
 
     # R restructures ztree to have specified new topology.
     def R(ztree, newtopo):
+        # verify ztree consistency
         items = list(ztree.items())
         for (k,v) in items:
             assert ztree[k] == v
@@ -445,6 +446,7 @@ def test_restructure():
         assert crack_btree(z) == (BTREE_EMPTY, [], [])
         return z
 
+
     # ø -> T/B
     z = Z0()
     R(z, 'T/B')