Скачать или смотреть Solving NPE Issues with Cucumber Extent Report Plugin When Using System Properties

Learn how to resolve the `NPE` error while configuring Cucumber Extent Report Plugin using system properties instead of an extent.properties file, with a step-by-step guide to set it up correctly.
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Troubleshooting NPE Errors with Cucumber Extent Report Plugin

If you're working on a Cucumber project and looking to incorporate extent reporting, you may encounter a frustrating issue: a Null Pointer Exception (NPE) when configuring the extent report using system properties instead of the extent.properties file. This can interrupt your testing workflow and leave you searching for answers. In this guide, we'll explore why this issue occurs and provide you with a step-by-step solution that will help you resolve it effectively.

Understanding the Problem

In your project, you may have successfully configured the extent report using an extent.properties file. The challenge arises when you decide to use system properties. Users have reported that, upon setting system properties like:

[[See Video to Reveal this Text or Code Snippet]]

they encounter an NPE within the ExtentService class, specifically in the method responsible for handling Base64 PNG image styles. The error message typically reads:

[[See Video to Reveal this Text or Code Snippet]]

This indicates that the service class is unable to locate the necessary configuration, resulting in a null value.

Step-by-Step Solution

1. Create the Required Package

To resolve the NPE, you will need to create a specific package structure within your project. Follow these steps:

Create a Package: Create a package named com.aventstack.adapter in your project.

Add Properties File: Place your extent.properties file in this newly created package.

This setup ensures that the ExtentReports library can locate the properties needed for configuration.

2. Configure the Spark XML File

Next, you will need to ensure that your Spark configuration file is correctly placed:

Position the Configuration File: Place the spark-config.xml file in the same directory as your exported JAR file. This file is crucial for the reporting to work properly since it holds additional configuration that the reporting engine depends on.

3. Repackage and Run Your JAR

After you have set up both the properties file and the Spark configuration XML as described, you should:

Rebuild your JAR: Make sure to re-export or rebuild your JAR file so the changes take effect.

Run Your Tests: Execute your tests again after packaging. The setup should eliminate the NPE issue and allow your extent report to generate as expected.

Conclusion

Utilizing system properties for configuration in the Cucumber Extent Report plugin can be handy, but it's crucial to ensure your setup aligns with the framework's requirements. By creating the proper package for your properties file and positioning your Spark XML correctly, you can avoid the NPE and streamline your testing experience. With this guide, you should now be equipped to tackle similar issues and get your reporting back on track.

Implement these changes and see how smoothly the Cucumber tests run with proper extent reporting. Happy testing!