Send screenshots back to the client for debugging

chrome/test/webdriver/chromedriver_tests.py

 #!/usr/bin/python
 
 # Copyright (c) 2011 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.
 
 """Tests for ChromeDriver.
 
 If your test is testing a specific part of the WebDriver API, consider adding
 it to the appropriate place in the WebDriver tree instead.
@@ skipping 130 matching lines @@
     self.assertNotEqual(cookie_dict, None)
     self.assertEqual(cookie_dict["value"], "this is a test");
 
   def testDeleteCookie(self):
     self.testAddCookie();
     self._driver.delete_cookie("chromedriver_cookie_test")
     cookie_dict = self._driver.get_cookie("chromedriver_cookie_test")
     self.assertEqual(cookie_dict, None)
 
 
+class ScreenshotTest(unittest.TestCase):
+  """Tests to verify screenshot retrieval"""
+
+  SEARCH = "http://www.google.com/webhp?hl=en"
+  NEWS = "http://www.google.com/news"
+
+  def setUp(self):
+    self._launcher = ChromeDriverLauncher()
+    self._driver = WebDriver(self._launcher.GetURL(), {})
+
+  def tearDown(self):
+    self._driver.quit()
+    self._launcher.Kill()
+
+  def testScreenCapture(self):
+    self._driver.get(self.SEARCH)
+    s1 = self._driver.get_screenshot_as_base64()
+    self._driver.get(self.NEWS)
+    s2 = self._driver.get_screenshot_as_base64()
+    self.assertTrue(len(s1) > 0 and len(s2) > 0)
+    self.assertTrue(len(s1) != len(s2))
+
+
 class SessionTest(unittest.TestCase):
   """Tests dealing with WebDriver sessions."""
 
   def setUp(self):
     self._launcher = ChromeDriverLauncher()
 
   def tearDown(self):
     self._launcher.Kill()
 
   def testCreatingSessionShouldRedirectToCorrectURL(self):
@@ skipping 127 matching lines @@
     self.assertEquals('', url_parts[0])
     self.assertEquals('wd', url_parts[1])
     self.assertEquals('hub', url_parts[2])
     self.assertEquals('session', url_parts[3])
     self.assertEquals(data['sessionId'], url_parts[4])
 
 
 if __name__ == '__main__':
   unittest.main(module='chromedriver_tests',
                 testRunner=GTestTextTestRunner(verbosity=1))