16 July 2024 Leave a comment QA
When running automated tests, it is often necessary to clear the localStorage
before executing a specific group of tests. This ensures that the tests run in a clean environment, free from any residual data that could affect the outcomes. In this article, we will explore the most effective methods to clear localStorage
using Selenium WebDriver.
Using WebStorage Interface
If your WebDriver implements the WebStorage
interface, you can directly clear the localStorage
and sessionStorage
using the following approach:
if (driver instanceof WebStorage) {
WebStorage webStorage = (WebStorage) driver;
webStorage.getSessionStorage().clear();
webStorage.getLocalStorage().clear();
} else {
throw new IllegalArgumentException("This test expects the driver to implement WebStorage");
}
This method checks if the driver implements WebStorage
and then clears both sessionStorage
and localStorage
. If the driver does not support WebStorage
, it throws an IllegalArgumentException
.
Using JavaScript Execution
For drivers that do not implement the WebStorage
interface, or if you prefer a more universal approach, you can use the execute_script
method to run JavaScript directly in the browser context. Here’s how you can do it:
driver.execute_script('window.localStorage.clear();');
This method uses the execute_script
function of the WebDriver to execute the JavaScript code that clears the localStorage
.
Handling Different Languages
If you are working with C#, the current recommended approach (due to changes in Selenium 4) is to use JavaScript for managing localStorage
:
if ((bool?)driver.ExecuteScript("return !!window.localStorage") == true) {
driver.ExecuteScript("window.localStorage.clear();");
}
This method ensures compatibility with the latest versions of Selenium and avoids deprecated features.
Conclusion
Clearing localStorage
is a crucial step in maintaining the integrity of your automated tests. By using either the WebStorage
interface or executing JavaScript directly, you can ensure that your testing environment remains clean and reliable.
For those looking to streamline their testing processes further, consider using tools like Repeato. Repeato is a no-code test automation tool for iOS and Android that allows you to create, run, and maintain automated tests for your apps quickly and efficiently. Leveraging computer vision and AI, Repeato makes it simple to set up and use, ensuring high-quality assurance with minimal effort.
For more detailed guides and documentation, visit our documentation page.
Like this article? there’s more where that came from!
- Resolving the FFmpeg Library Loading Error on Apple M1
- Resolving the “adb server version doesn’t match this client” Error
- Understanding the Differences Between Nightwatch.js and WebdriverIO
- Resolving “EACCES: permission denied” Error During npm Install on macOS
- Testing NativeScript Apps with Appium: A Practical Guide