[chromedriver] Support clicking an element in sub frames.

chrome/test/chromedriver/run_py_tests.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """End to end tests for ChromeDriver."""
 
 import base64
 import ctypes
 import optparse
@@ skipping 251 matching lines @@
         'document.body.innerHTML = "<div>old</div>";'
         'var div = document.getElementsByTagName("div")[0];'
         'div.addEventListener("click", function() {'
         '  var div = document.getElementsByTagName("div")[0];'
         '  div.innerHTML="new<br>";'
         '});'
         'return div;')
     div.Click()
     self.assertEquals(1, len(self._driver.FindElements('tag name', 'br')))
 
+  def testClickElementInSubFrame(self):
+    self._driver.Load(self.GetHttpUrlForFile('/chromedriver/frame_test.html'))
+    frame = self._driver.FindElement('tag name', 'iframe')
+    self._driver.SwitchToFrame(frame)
+    # Test clicking element in the sub frame.
+    self.testClickElement()
+
   def testClearElement(self):
     text = self._driver.ExecuteScript(
         'document.body.innerHTML = \'<input type="text" value="abc">\';'
         'var input = document.getElementsByTagName("input")[0];'
         'input.addEventListener("change", function() {'
         '  document.body.appendChild(document.createElement("br"));'
         '});'
         'return input;')
     text.Clear()
     self.assertEquals(1, len(self._driver.FindElements('tag name', 'br')))
@@ skipping 195 matching lines @@
   global _ANDROID_PACKAGE
   _ANDROID_PACKAGE = options.android_package
 
   all_tests_suite = unittest.defaultTestLoader.loadTestsFromModule(
       sys.modules[__name__])
   tests = unittest_util.FilterTestSuite(all_tests_suite, options.filter)
   ChromeDriverTest.GlobalSetUp()
   result = unittest.TextTestRunner(stream=sys.stdout).run(tests)
   ChromeDriverTest.GlobalTearDown()
   sys.exit(len(result.failures) + len(result.errors))