# HG changeset patch
# User Pulkit Goyal <7895pulkit@gmail.com>
# Date 2018-02-28 16:33:47
# Node ID 5a029f04985435d243d9d26926a7a633dbedf2fe
# Parent  14d2371216ba1871e101de8f934808fa31110a79

py3: make sure we open the file in bytes mode

This makes the test pass on Python 3.

Differential Revision: https://phab.mercurial-scm.org/D2507

diff --git a/tests/test-revlog-ancestry.py b/tests/test-revlog-ancestry.py
--- a/tests/test-revlog-ancestry.py
+++ b/tests/test-revlog-ancestry.py
@@ -15,7 +15,7 @@ def commit(text, time):
     repo.commit(text=text, date=b"%d 0" % time)
 
 def addcommit(name, time):
-    f = open(name, 'w')
+    f = open(name, 'wb')
     f.write(b'%s\n' % name)
     f.close()
     repo[None].add([name])