add test for the notify extension

tests/test-notify

@@ -0,0 +1,38 b''
+#!/bin/sh
+
+cat <<EOF >> $HGRCPATH
+[extensions]
+notify=
+
+[hooks]
+incoming.notify = python:hgext.notify.hook
+
+[notify]
+config = $HGTMP/.notify.conf
+sources = pull
+domain = test.com
+strip = 3
+template = Subject: {desc|firstline|strip}\nFrom: {author}\n\nchangeset {node|short} in {webroot}\ndescription:\n\t{desc|tabindent|strip}
+
+[web]
+baseurl = http://test/
+
+[usersubs]
+foo@bar = *
+EOF
+
+hg init a
+echo a > a/a
+echo % commit
+hg --traceback --cwd a commit -Ama -d '0 0'
+
+echo % clone
+hg --traceback clone a b
+
+echo a >> a/a
+echo % commit
+hg --traceback --cwd a commit -Amb -d '1 0'
+
+echo % pull
+hg --traceback --cwd b pull ../a 2>&1 | sed -e 's/\(Message-Id:\).*/\1/' \
+  -e 's/changeset \([0-9a-f]*\) in .*/changeset \1/'

tests/test-notify.out

@@ -0,0 +1,35 b''
+% commit
+adding a
+% clone
+1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+% commit
+% pull
+pulling from ../a
+searching for changes
+adding changesets
+adding manifests
+adding file changes
+added 1 changesets with 1 changes to 1 files
+Subject: b
+From: [e-mail]
+X-Hg-Notification: changeset 0647d048b600
+Message-Id:
+To: foo@bar
+
+changeset 0647d048b600
+description:
+	b
+diffstat:
+
+1 file changed, 1 insertion(+)
+a |    1 +
+
+diffs (6 lines):
+
+diff -r cb9a9f314b8b -r 0647d048b600 a
+--- a/a	Thu Jan 01 00:00:00 1970 +0000
++++ b/a	Thu Jan 01 00:00:01 1970 +0000
+@@ -1,1 +1,2 @@ a
+ a
++a
+(run 'hg update' to get a working copy)