Take a screenshot using Selenium WebDriver with Java

WebDriver driver = new FirefoxDriver();
driver.get("http://www.google.com/");
File scrFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
// Now you can do whatever you need to do with it, for example copy somewhere
FileUtils.copyFile(scrFile, new File("c:\\tmp\\screenshot.png"));

Drag And Drop

Here’s an example of using the Actions class to perform a drag and drop. Native events are required to be enabled.

WebElement element = driver.findElement(By.name("source"));
WebElement target = driver.findElement(By.name("target"));

(new Actions(driver)).dragAndDrop(element, target).perform();

Changing the User Agent

This is easy with the Firefox Driver:

FirefoxProfile profile = new FirefoxProfile();
profile.addAdditionalPreference("general.useragent.override", "some UA string");
WebDriver driver = new FirefoxDriver(profile);

Cookies

Before we leave these next steps, you may be interested in understanding how to use cookies. First of all, you need to be on the domain that the cookie will be valid for. If you are trying to preset cookies before you start interacting with a site and your homepage is large / takes a while to load an alternative is to find a smaller page on the site, typically the 404 page is small (http://example.com/some404page)

// Go to the correct domain
driver.get("http://www.example.com");

// Now set the cookie. This one's valid for the entire domain
Cookie cookie = new Cookie("key", "value");
driver.manage().addCookie(cookie);

// And now output all the available cookies for the current URL
Set<Cookie> allCookies = driver.manage().getCookies();
for (Cookie loadedCookie : allCookies) {
    System.out.println(String.format("%s -> %s", loadedCookie.getName(),  

loadedCookie.getValue()));
}

// You can delete cookies in 3 ways
// By name
driver.manage().deleteCookieNamed("CookieName");
// By Cookie
driver.manage().deleteCookie(loadedCookie);
// Or all of them
driver.manage().deleteAllCookies();

Navigation: History and Location

Earlier, we covered navigating to a page using the “get” command ( driver.get("http://www.example.com")) As you’ve seen, WebDriver has a number of smaller, task-focused interfaces, and navigation is a useful task. Because loading a page is such a fundamental requirement, the method to do this lives on the main WebDriver interface, but it’s simply a synonym to:

driver.navigate().to("http://www.example.com");

To reiterate: “navigate().to()” and “get()” do exactly the same thing. One’s just a lot easier to type than the other!
The “navigate” interface also exposes the ability to move backwards and forwards in your browser’s history:

driver.navigate().forward();
driver.navigate().back();

Please be aware that this functionality depends entirely on the underlying browser. It’s just possible that something unexpected may happen when you call these methods if you’re used to the behaviour of one browser over another.

Popup Dialogs

Starting with Selenium 2.0 beta 1, there is built in support for handling popup dialog boxes. After you’ve triggered an action that opens a popup, you can access the alert with the following:

Alert alert = driver.switchTo().alert();

This will return the currently open alert object. With this object you can now accept, dismiss, read its contents or even type into a prompt. This interface works equally well on alerts, confirms, and prompts. Refer to the JavaDocs or RubyDocs for more information.

Moving Between Windows and Frames

Some web applications have many frames or multiple windows. WebDriver supports moving between named windows using the “switchTo” method:

driver.switchTo().window("windowName");

All calls to driver will now be interpreted as being directed to the particular window. But how do you know the window’s name? Take a look at the javascript or link that opened it:

<a href="somewhere.html" target="windowName">Click here to open a new window</a>

Alternatively, you can pass a “window handle” to the “switchTo().window()” method. Knowing this, it’s possible to iterate over every open window like so:

for (String handle : driver.getWindowHandles()) {
    driver.switchTo().window(handle);
}

You can also switch from frame to frame (or into iframes):

driver.switchTo().frame("frameName");

It’s possible to access subframes by separating the path with a dot, and you can specify the frame by its index too. That is:

driver.switchTo().frame("frameName.0.child");

would go to the frame named “child” of the first subframe of the frame called “frameName”. All frames are evaluated as if from *top*.