Docserver: there is only one.

chrome/common/extensions/docs/server2/integration_test.py

Index: chrome/common/extensions/docs/server2/integration_test.py
diff --git a/chrome/common/extensions/docs/server2/integration_test.py b/chrome/common/extensions/docs/server2/integration_test.py
index 2ed80f33d1c1558614e6fcf458555314987abba8..77bc69d83e90dd60993e628a095254495c5174e0 100755
--- a/chrome/common/extensions/docs/server2/integration_test.py
+++ b/chrome/common/extensions/docs/server2/integration_test.py
@@ -11,10 +11,12 @@ build_server.main()
 import logging
 import optparse
 import os
+import posixpath
 import sys
 import time
 import unittest
 
+from branch_utility import BranchUtility
 from local_renderer import LocalRenderer
 from fake_fetchers import ConfigureFakeFetchers
 from handler import Handler
@@ -74,7 +76,23 @@ class IntegrationTest(unittest.TestCase):
           # that render large files. At least it'll catch zero-length responses.
           self.assertTrue(len(response.content) >= len(content),
               'Content was "%s" when rendering %s' % (response.content, path))
+
         check_result(Handler(Request.ForTest(path)).Get())
+
+        # Make sure that leaving out the .html will temporarily redirect to the
+        # path with the .html.
+        if path != '/404.html':
+          redirect_result = Handler(
+              Request.ForTest(posixpath.splitext(path)[0])).Get()
+          self.assertEqual((path, False), redirect_result.GetRedirect())
+
+        # Make sure including a channel will permanently redirect to the same
+        # path without a channel.
+        for channel in BranchUtility.GetAllChannelNames():
+          redirect_result = Handler(
+              Request.ForTest('%s/%s' % (channel, path))).Get()
+          self.assertEqual((path, True), redirect_result.GetRedirect())
+
         # Samples are internationalized, test some locales.
         if path.endswith('/samples.html'):
           for lang in ['en-US', 'es', 'ar']: