--- a/tests/test-install	Sat Nov 07 00:13:05 2009 +0100
+++ b/tests/test-install	Sat Nov 07 01:46:27 2009 +0100
@@ -1,3 +1,10 @@
 #!/bin/sh
 
+echo '% hg debuginstall'
 hg debuginstall
+
+echo '% hg debuginstall with no username'
+HGUSER= hg debuginstall
+
+# Happy End
+true