About test_res

In the document, it says:
If you need to run test cases, you will need to download the required [resource files](https://drive.google.com/file/d/1i4uC-dZTQxdVgn2rP0ZdfJTMkJIXgYY4/view?usp=sharing): test_res.
But when I visit this url, it seems the resource is not available. So, where can I get these resources?

Find the document containing the test_res resource-files link and verify whether the linked resource is still available. Done means the documentation points to an accessible resource location or clearly explains where the required files can be obtained.

Written by the indexing model from the issue text.