# Description

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Updates the following tests to pytest format:

- test_pink_ik.py
- test_selection_strategy.py
- test_generate_dataset.py

Updates test_generate_dataset.py to check that the expected number of
annotations are successfully generated in the HDF5 during the annotation
phase. If not, then test returns failure. This ensures that physics is
behaving correctly and that the correct annotated demos are being
generated. Previously, if a physics issue is introduced, the test would
timeout instead of failing.

The annotate_demos.py script was updated to return the number of
successfully annotated demos in order to support the above test.

## Type of change

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applicable. -->

- New feature (non-breaking change which adds functionality)

## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [x] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

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