Docs: Use ETags.

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

Index: chrome/common/extensions/docs/server2/render_servlet_test.py
diff --git a/chrome/common/extensions/docs/server2/render_servlet_test.py b/chrome/common/extensions/docs/server2/render_servlet_test.py
index 1857028f399f94eda200cf4856f1d52570092767..5ab95a9795aa64564ed1521251e6501365d3bd71 100755
--- a/chrome/common/extensions/docs/server2/render_servlet_test.py
+++ b/chrome/common/extensions/docs/server2/render_servlet_test.py
@@ -19,8 +19,8 @@ class _RenderServletDelegate(RenderServlet.Delegate):
 
 
 class RenderServletTest(unittest.TestCase):
-  def _Render(self, path):
-    return RenderServlet(Request.ForTest(path),
+  def _Render(self, path, headers=None):
+    return RenderServlet(Request.ForTest(path, headers=headers),
                          _RenderServletDelegate()).Get()
 
   def testExtensionAppRedirect(self):
@@ -110,6 +110,35 @@ class RenderServletTest(unittest.TestCase):
     # whether or not that exists.
     self.assertEqual(('/dir', False), self._Render('dir/').GetRedirect())
 
+  def testEtags(self):
+    def test_path(path, content_type):
+      # Render without etag.
+      response = self._Render(path)
+      self.assertEqual(200, response.status)
+      etag = response.headers.get('ETag')
+      self.assertTrue(etag is not None)
+
+      # Render with an If-None-Match which doesn't match.
+      response = self._Render(path, headers={
+        'If-None-Match': '"fake etag"',
+      })
+      self.assertEqual(200, response.status)
+      self.assertEqual(content_type, response.headers.get('Content-Type'))
+      self.assertEqual(etag, response.headers.get('ETag'))
+
+      # Render with the correct matching If-None-Match.
+      response = self._Render(path, headers={
+        'If-None-Match': etag,
+      })
+      self.assertEqual(304, response.status)
+      self.assertEqual('Not Modified', response.content.ToString())
+      self.assertEqual(content_type, response.headers.get('Content-Type'))
+      self.assertEqual(etag, response.headers.get('ETag'))
+
+    # Test with a static path and a dynamic path.
+    test_path('static/css/out/site.css', 'text/css; charset=utf-8')
+    test_path('extensions/storage', 'text/html; charset=utf-8')
+
 
 if __name__ == '__main__':
   unittest.main()