.

wcfs/testprog/treedelta-genallstructs.py

@@ -174,8 +174,8 @@ def treedeltaGenAllStructs(zstor, kv1txt, kv2txt, n):
     t2struct0 = xbtree.StructureOf(ztree)
 
     # all tree1 and tree2 topologies we are going to emit: native + n random ones
-    t1structv = [t1struct0] + random.sample(t1AllStructs, n)
-    t2structv = [t2struct0] + random.sample(t2AllStructs, n)
+    t1structv = [t1struct0] + random.sample(t1AllStructs, min(n, len(t1AllStructs)))
+    t2structv = [t2struct0] + random.sample(t2AllStructs, min(n, len(t2AllStructs)))
 
     # emit tree1->tree2 and tree1<-tree2 transitions for all combinations of tree1 and tree2.
     for i in range(len(t1structv)):