[ChromeDriver] Add nested frame xpath expression in order to switch to frame present inside nested …

chrome/test/chromedriver/test/run_py_tests.py

Index: chrome/test/chromedriver/test/run_py_tests.py
diff --git a/chrome/test/chromedriver/test/run_py_tests.py b/chrome/test/chromedriver/test/run_py_tests.py
index ce3058ae1feb1b055b79cf9a06b18ca43b46cd24..b29ef73880296f9fcd954b74623d4ccfea73ca38 100755
--- a/chrome/test/chromedriver/test/run_py_tests.py
+++ b/chrome/test/chromedriver/test/run_py_tests.py
@@ -400,6 +400,21 @@ class ChromeDriverTest(ChromeDriverBaseTest):
     self._driver.SwitchToParentFrame()
     self.assertTrue('One' in self._driver.GetPageSource())
 
+  def testSwitchToNestedFrame(self):
+    self._driver.Load(self.GetHttpUrlForFile(
+        '/chromedriver/nested_frameset.html'))
+    self._driver.SwitchToFrameByIndex(0)
+    self.assertTrue(self._driver.FindElement("id", "link").IsDisplayed())
+    self._driver.SwitchToMainFrame()
+    self._driver.SwitchToFrame('2Frame')
+    self.assertTrue(self._driver.FindElement("id", "l1").IsDisplayed())
+    self._driver.SwitchToMainFrame()
+    self._driver.SwitchToFrame('fourth_frame')
+    self.assertTrue('One' in self._driver.GetPageSource())
+    self._driver.SwitchToMainFrame()
+    self._driver.SwitchToFrameByIndex(4)
+    self.assertTrue(self._driver.FindElement("id", "aa1").IsDisplayed())
+
   def testExecuteInRemovedFrame(self):
     self._driver.ExecuteScript(
         'var frame = document.createElement("iframe");'