Docs: Use ETags.

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

 #!/usr/bin/env python
 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from HTMLParser import HTMLParser
 import unittest
 
 from fake_fetchers import ConfigureFakeFetchers
 from github_file_system_provider import GithubFileSystemProvider
@@ skipping 55 matching lines @@
     return RenderServlet(Request.ForTest(path, host=_ALLOWED_HOST),
                          _RenderServletDelegate()).Get()
 
   def _RenderAndCheck(self, path, issue, expected_equal):
     '''Renders |path| with |issue| patched in and asserts that the result is
     the same as |expected_equal| modulo any links that get rewritten to
     "_patch/issue".
     '''
     patched_response = self._RenderWithPatch(path, issue)
     unpatched_response = self._RenderWithoutPatch(path)
-    patched_response.headers.pop('cache-control', None)
-    unpatched_response.headers.pop('cache-control', None)
+    for header in ('Cache-Control', 'ETag'):
+      patched_response.headers.pop(header, None)
+      unpatched_response.headers.pop(header, None)
     unpatched_content = unpatched_response.content.ToString()
 
     # Check that all links in the patched content are qualified with
     # the patch URL, then strip them out for checking (in)equality.
     patched_content = patched_response.content.ToString()
     patch_servlet_path = '_patch/%s' % issue
     errors = _CheckURLsArePatched(patched_content, patch_servlet_path)
     self.assertFalse(errors,
         '%s\nFound errors:\n * %s' % (patched_content, '\n * '.join(errors)))
     patched_content = patched_content.replace('/%s' % patch_servlet_path, '')
@@ skipping 69 matching lines @@
                                  '%s/_patch/12345' % _ALLOWED_HOST))
     self.assertTrue(*is_redirect('http://developers.google.com', '12345',
                                  '%s/_patch/12345' % _ALLOWED_HOST))
     self.assertFalse(*is_redirect('http://chrome-apps-doc.appspot.com', '12345',
                                   None))
     self.assertFalse(*is_redirect('http://some-other-app.appspot.com', '12345',
                                   None))
 
 if __name__ == '__main__':
   unittest.main()