Скачать или смотреть Solving the OSError Issue in Robot Framework When Using Client Certificates

Learn how to resolve the `OSError: Could not find the TLS certificate file` error in Robot Framework by correctly passing client certificate paths.
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This video is based on the question https://stackoverflow.com/q/62935853/ asked by the user 'Willis Zawisa' ( https://stackoverflow.com/u/2950594/ ) and on the answer https://stackoverflow.com/a/62941465/ provided by the user 'Bryan Oakley' ( https://stackoverflow.com/u/7432/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the OSError in Robot Framework: A Guide to Client Certificate Issues

When working with the Robot Framework, especially when dealing with HTTP requests, users may encounter issues related to SSL certificate paths. One common issue arises when users attempt to create a client cert session and then run a GET request, only to receive an error message indicating that the TLS certificate file could not be found. If you're experiencing this problem, you’re not alone, and this guide will guide you toward a solution.

The Problem: Understanding the Error

The specific error message encountered is as follows:

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

This occurs when using the keyword to create a client cert session with the following line of code:

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

In this case, the client_certs value is being misinterpreted. Instead of passing a list of certificates, it is treating the parameters as a raw string that starts with (, hence leading to the invalid path error when the GET request is made.

The Solution: Properly Passing Client Cert Paths

To fix this issue, you need to create a list of the client certificates separately before passing them to the Create Client Cert Session keyword. Here’s how to do it step-by-step:

Step 1: Create a List for the Certificates

Instead of directly using parentheses to pass values, we will utilize Robot Framework's built-in capabilities to create a list. This is how you can define a list of client certificates:

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

Step 2: Use the List in the Client Cert Session

Now that you have created a proper list, you can use it in the Create Client Cert Session keyword like so:

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

The Complete Example

Here’s how the revised part of your Robot Framework test suite should look:

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

Conclusion

By following these steps, you should be able to overcome the OSError: Could not find the TLS certificate file error in Robot Framework when handling client certificates. Always remember that proper data structures are crucial in ensuring smooth operation within the Robot Framework environment.

With the newly structured approach demonstrated above, you can confidently send secured GET requests using your client certificates without encountering path issues.

Now you can proceed with your automation tasks without further disruptions!