Tuktest index hash

[JiaT75]

Pull request checklist

Please check if your PR fulfills the following requirements:

• [X] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been reviewed and added / updated if needed (for bug fixes / features)
• [ ] Build was run locally and without warnings or errors
• [X] All previous and new tests pass

Pull request type

Please check the type of change your PR introduces: - [ ] Bugfix - [ ] Feature - [ ] Code style update (formatting, renaming, typo fix) - [ ] Refactoring (no functional changes, no api changes) - [ ] Build related changes - [ ] Documentation content changes - [X] Other (please describe): New test ## What is the current behavior?

Related Issue URL:

What is the new behavior?

• New test added for index_hash API functions
• Increased code covered by tests

Does this introduce a breaking change?

• [ ] Yes
• [X] No

Other information

[Anonymous941]

The first of Jia Tan's "contributions" to xz...