tests/test-log.t

--- a/tests/test-log.t	Tue Apr 17 21:59:58 2018 +0900
+++ b/tests/test-log.t	Fri Apr 13 23:45:07 2018 +0900
@@ -656,6 +656,9 @@
   6 
 #endif
 
+log copies, empty set
+
+  $ hg log --copies -r '0 and not 0'
 
 log -p d