test case added

[saranca14]

Generated for GFT AI Impact Bot for the 0cde1c0

This pull request introduces a new test class LinkListerTest in the src/test/java/com/scalesec/vulnado/test.java file. The purpose of this class is to test the functionality of the LinkLister class, specifically its methods getLinks and getLinksV2. Below is a detailed breakdown of the changes:

1. Imports:

   • The test class imports necessary libraries such as JUnit for testing, Mockito for mocking, and standard Java libraries for handling exceptions and lists.

2. Helper Method:

   • mockJsoupConnection: This private helper method is used to mock the Jsoup connection and document retrieval. It simulates the behavior of Jsoup by returning a mock document when a connection is made to a specified URL.

3. Test Methods:

   • getLinks_ShouldReturnLinks: This test checks if the getLinks method correctly retrieves links from a given HTML content. It mocks a connection to "http://example.com" and verifies that two specific links are returned.

   • getLinks_ShouldThrowIOException: This test ensures that the getLinks method throws an IOException when an invalid URL is provided. It uses Mockito to simulate this exception.

   • getLinksV2_ShouldReturnLinks: Similar to the first test, this one checks the getLinksV2 method for correct link retrieval from HTML content. It verifies that the method returns the expected links.

   • getLinksV2_ShouldThrowBadRequestForPrivateIP: This test verifies that the getLinksV2 method throws a BadRequest exception when a private IP address is used as the URL. This is a security measure to prevent accessing internal network resources.

   • getLinksV2_ShouldThrowBadRequestForInvalidURL: This test ensures that the getLinksV2 method throws a BadRequest exception when an invalid URL is provided.

Security Considerations:

• The test getLinksV2_ShouldThrowBadRequestForPrivateIP is a good security measure to prevent SSRF (Server-Side Request Forgery) attacks by ensuring that private IP addresses are not accessed.
• Ensure that the BadRequest exception is properly defined and used consistently across the application to handle invalid requests.

Recommendations:

• Consider adding more edge cases to the tests, such as testing with URLs that redirect or contain malformed HTML.
• Ensure that the LinkLister class is handling exceptions and edge cases robustly, especially in production environments.
• Review the LinkLister class to ensure it is not vulnerable to other types of attacks, such as XSS (Cross-Site Scripting) or injection attacks, when processing URLs and HTML content.