--- a/tests/test-doctest.py	Sat Oct 22 14:35:10 2016 +0900
+++ b/tests/test-doctest.py	Sat Oct 22 15:02:11 2016 +0900
@@ -20,6 +20,7 @@
 testmod('mercurial.dagparser', optionflags=doctest.NORMALIZE_WHITESPACE)
 testmod('mercurial.dispatch')
 testmod('mercurial.encoding')
+testmod('mercurial.formatter')
 testmod('mercurial.hg')
 testmod('mercurial.hgweb.hgwebdir_mod')
 testmod('mercurial.match')