Handling UnexpectedAlertPresentException Failure while implementing Windows, Frames, and Alerts in Selenium

Error Name: 

UnexpectedAlertPresentException

Description: 

UnexpectedAlertPresentException is a Selenium WebDriver error that occurs when an unexpected alert pops up and the WebDriver is not able to handle it. This error indicates that an alert is present on the page and the WebDriver is unable to interact with other elements until the alert is handled.

Understanding the Error: When an alert pops up on the page, it blocks the WebDriver from performing any further actions. The WebDriver throws an exception because it is unable to interact with the alert, resulting in the UnexpectedAlertPresentException error.

Causes: 

This error can occur for various reasons, such as invalid inputs, security issues, or unexpected behavior in the web application.

To check the line number and file name where the error occurs, refer to the stack trace in the error message.

After finding the error, it is recommended to check the possible causes listed below and try to handle the alert accordingly:

Invalid inputs on the page

Security issues on the page

Unexpected behavior in the web application

Cause: One common cause of the UnexpectedAlertPresentException error is invalid inputs on the page. This can happen when a you enters invalid data into a form and triggers an alert.

Debugs:

Debug-1: 

Switch to Alert and Dismiss - One way to handle this error is to switch to the alert, dismiss it, and then continue with the test. You can do this by using the switchTo().alert() method to switch to the alert and then using the dismiss() method to dismiss it.

Example:

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

alert.dismiss();

Debug-2: 

Use Try-Catch Block - Another way to handle this error is to use a try-catch block to catch the exception and handle it accordingly. In this method, the error is caught and the alert is dismissed before continuing with the test.

Recommendations: To avoid this error, make sure to test your application thoroughly and handle any expected or unexpected alerts that may appear during the test. It is also recommended to handle exceptions in a way that allows the test to continue, rather than failing the entire test suite.