.

wcfs/internal/xbtree_test.py

@@ -656,6 +656,20 @@ def test_restructure():
     assertB(b6,  6)
     assertB(b78, 7,8)
 
+    # migrate keys in between buckets
+    R(z, 'T6/T3-T8/B1-B3,5-B6,7-B8')
+    assertT(z,  [6], tl,tr)
+    assertT(tl, [3], b13,b5)
+    assertT(tr, [8], b6,b78)
+    b1  = b13; del b13
+    b35 = b5;  del b5
+    b67 = b6;  del b6
+    b8  = b78; del b78
+    assertB(b1,  1)
+    assertB(b35, 3,5)
+    assertB(b67, 6,7)
+    assertB(b8,  8)
+
 
 
     #for nkeys in range(5):