fluid This PR is to add comments to TestPatchDatasetStatus in pkg\ddc\alluxio\cache

Ⅰ. Describe what this PR does

Adds descriptive comments to the TestPatchDatasetStatus function in pkg/ddc/alluxio/cache_test.go. The comment explains the purpose and logic of the unit test, which validates the calculation of cached data percentage in a dataset.

Ⅱ. Does this pull request fix one issue?

fixes #5057

Ⅲ. List the added test cases (unit test/integration test) if any, please explain if no tests are needed.

No new test cases are added. This PR only adds comments to an existing unit test function. The logic and behavior of the code remain unchanged.

Ⅳ. Describe how to verify it

Since this PR only adds comments, no additional verification is required.

Ⅴ. Special notes for reviews

This is a documentation-only change.

Jun 04 '25 15:06 Zhican1229

Hi @Zhican1229. Thanks for your PR.

I'm waiting for a fluid-cloudnative member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.