[chromedriver] Implement SwitchToFrame command.

chrome/test/chromedriver/test.py

Index: chrome/test/chromedriver/test.py
diff --git a/chrome/test/chromedriver/test.py b/chrome/test/chromedriver/test.py
index e8fe41dbaf3646e73ef892af9f8ff5963d849c47..946e7d4e57358790e1d131e38fc7dfb0be6846e5 100644
--- a/chrome/test/chromedriver/test.py
+++ b/chrome/test/chromedriver/test.py
@@ -45,6 +45,26 @@ class ChromeDriverTest(unittest.TestCase):
                       driver.ExecuteScript, '{{{')
     driver.Quit()
 
+  def testSwitchToFrame(self):
+    driver = chromedriver.ChromeDriver(_CHROMEDRIVER_LIB, _CHROME_BINARY)
+    driver.ExecuteScript(
+        'var frame = document.createElement("iframe");'
+        'frame.id="id";'
+        'frame.name="name";'
+        'document.body.appendChild(frame);')
+    self.assertTrue(driver.ExecuteScript('return window.top == window'))
+    driver.SwitchToFrame('id')
+    self.assertTrue(driver.ExecuteScript('return window.top != window'))
+    driver.SwitchToMainFrame()
+    self.assertTrue(driver.ExecuteScript('return window.top == window'))
+    driver.SwitchToFrame('name')
+    self.assertTrue(driver.ExecuteScript('return window.top != window'))
+    driver.SwitchToMainFrame()
+    self.assertTrue(driver.ExecuteScript('return window.top == window'))
+    driver.SwitchToFrameByIndex(0)
+    self.assertTrue(driver.ExecuteScript('return window.top != window'))
+    driver.Quit()
+
 
 if __name__ == '__main__':
   if len(sys.argv) != 2 and len(sys.argv) != 3: