Two sets of Autofill tests....

chrome/test/pyautolib/pyauto.py

 #!/usr/bin/python
 
 # Copyright (c) 2010 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.
 
 """PyAuto: Python Interface to Chromium's Automation Proxy.
 
 PyAuto uses swig to expose Automation Proxy interfaces to Python.
 For complete documentation on the functionality available,
@@ skipping 736 matching lines @@
              right key. It's useful to dump the preferences first to determine
              what type is expected for a particular preference path.
     """
     cmd_dict = {
       'command': 'SetPrefs',
       'path': path,
       'value': value,
     }
     self._GetResultFromJSONRequest(cmd_dict)
 
+  def SendWebkitKeyEvent(self, key_code, tab_index=0, windex=0):

[Ilya Sherman, 2011/03/18 23:17:11]

I'd be very surprised if this functionality is not already available in pyauto. 
How do other tests send key events?

[dyu1, 2011/03/21 18:42:35]

PyAuto was never meant to interact with the web UI such as send key events.
These are the first set of tests that actually does so. Once pyauto is
integrated with chrome driver, we'll be able to get away from this.

+    """Send a webkit key event to the browser.
+
+    Used to simulate key presses from the keyboard to interact with the browser.
+
+    Args:
+      key_code: the hex value associated with the keypress (virtual key code).
+      windex: window index to work on. Defaults to 0 (first window)
+      tab_index: tab index to work on. Defaults to 0 (first tab)
+    """
+    cmd_dict = {
+      'command': 'SendWebkitKeyEvent',
+      'type': 0,  # kRawKeyDownType
+      'text': '',
+      'isSystemKey': False,
+      'unmodifiedText': '',
+      'nativeKeyCode': 0,
+      'windowsKeyCode': key_code,
+      'modifiers': 0,
+      'windex': windex,
+      'tab_index': tab_index,
+    }
+    self._GetResultFromJSONRequest(cmd_dict)
+    cmd_dict['type'] = 3  # kKeyUpType
+    self._GetResultFromJSONRequest(cmd_dict)
+
   def WaitForAllDownloadsToComplete(self, windex=0):
     """Wait for all downloads to complete.
 
     Note: This method does not work for dangerous downloads. Use
     WaitForGivenDownloadsToComplete (below) instead.
     """
     cmd_dict = {'command': 'WaitForAllDownloadsToComplete'}
     self._GetResultFromJSONRequest(cmd_dict, windex=windex)
 
   def WaitForDownloadToComplete(self, download_path, timeout=-1):
@@ skipping 2017 matching lines @@
     if self._options.verbose:
       verbosity = 2
     result = PyAutoTextTestRuner(verbosity=verbosity).run(pyauto_suite)
     del loaded_tests  # Need to destroy test cases before the suite
     del pyauto_suite
     sys.exit(not result.wasSuccessful())
 
 
 if __name__ == '__main__':
   Main()