--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/fakemergerecord.py	Wed Nov 18 15:46:45 2015 -0800
@@ -0,0 +1,25 @@
+# Extension to write out fake unsupported records into the merge state
+#
+#
+
+from __future__ import absolute_import
+
+from mercurial import (
+    cmdutil,
+    merge,
+)
+
+cmdtable = {}
+command = cmdutil.command(cmdtable)
+
+@command('fakemergerecord',
+         [('X', 'mandatory', None, 'add a fake mandatory record'),
+          ('x', 'advisory', None, 'add a fake advisory record')], '')
+def fakemergerecord(ui, repo, *pats, **opts):
+    ms = merge.mergestate.read(repo)
+    records = ms._makerecords()
+    if opts.get('mandatory'):
+        records.append(('X', 'mandatory record'))
+    if opts.get('advisory'):
+        records.append(('x', 'advisory record'))
+    ms._writerecords(records)