Capturing screenshots of your tests is one of the most important features you can give to an automation engineer. It's the easiest way to actually understand from a report, why a test failed and how to reproduce it. While our OnDemand will help you record videos of your entire test, sometimes you just want a screenshot. Selenium supports capturing screenshots on remote machines, as Sean discussed in a previous Tip of the Week (Taking ScreenShots on the Server). Selenium has two methods dedicated to screenshot taking:
- CaptureScreenshot
- CaptureEntirePageScreenshot
An example of using the later function shows that it's pretty amazing, giving you a full rendering of the page: 
This just isn't going to work if we want to test something below the fold. There is a partial workaround, focus(). Focus will force all browsers to scroll the page so the selected element is visible. Here's an example of a test we run to view the bottom of our homepage:
def test_case(self):
browser = self.browser
browser.open("/")
browser.focus("css=a.indexTwitter")
png = browser.capture_screenshot_to_string()
f = open('screenshot.png', 'wb')
f.write(png.decode('base64'))
f.close()
twitter Santiago
