Question

Does Webdriver 2.28 automatically take a screenshot on exception/fail/error?

If it does, where can I find the screenshot? Which directory is the default?

Answer 1

No, it doesn’t do it automatically. Two options you can try:

1. Use WebDriverEventListener that is attachable to a EventFiringWebDriver which you can simply wrap around your usual driver. This will take a screenshot for every Exception thrown by the underlying WebDriver, but not if you fail an assertTrue() check.

   EventFiringWebDriver driver = new EventFiringWebDriver(new InternetExplorerDriver());
   WebDriverEventListener errorListener = new AbstractWebDriverEventListener() {
       @Override
       public void onException(Throwable throwable, WebDriver driver) {
           takeScreenshot("some name");
       }
   };
   driver.register(errorListener);
   

2. If you’re using JUnit, use the @Rule and TestRule. This will take a screenshot if the test fails for whatever reason.

   @Rule
   public TestRule testWatcher = new TestWatcher() {
       @Override
       public void failed(Throwable t, Description test) {
           takeScreenshot("some name");
       }
   };
   

The takeScreenshot() method being this in both cases:

public void takeScreenshot(String screenshotName) {
    if (driver instanceof TakesScreenshot) {
        File tempFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
        try {
            FileUtils.copyFile(tempFile, new File("screenshots/" + screenshotName + ".png"));
        } catch (IOException e) {
            // TODO handle exception
        }
    }
}

…where the FileUtils.copyFile() method being the one in Apache Commons IO (which is also shipped with Selenium).