sdk: fix pyright test typing

[cursor]

Summary

• Fix SDK pyright errors in tests by making validated non-None values explicit and using Pydantic validation for coercion cases.
• Broaden credit_unstreamed_file_bytes progress-bar typing to the structural update() API it uses.
• Align test path/body helper types with SDK signatures.

Validation

• npx --yes pyright@1.1.408 --pythonpath ./.venv/bin/python (0 errors)
• python3 -m uv run -p 3.13 ruff format --check --config pyproject.toml ... (changed files)
• python3 -m uv run -p 3.13 pyrefly check
• Focused pytest targets for changed tests (11 passed)

Note: local full prek run --all-files could not install hooks in this container because the hook installer attempted to write to system Python; the source CI sdk-pre-commit job is green.

  

---

Note

Low Risk
Changes are typing and test assertions only, aside from a wider structural type for progress bars that still only calls update().

Overview
Clears pyright failures in the SDK test suite and tightens one production type hint, with no intended runtime behavior change.

credit_unstreamed_file_bytes now accepts any object implementing update(n) via a new SupportsProgressUpdate protocol, instead of tqdm[NoReturn], matching how callers pass progress bars.

Tests are adjusted for stricter typing: explicit is not None checks before nested list access on Dataset, User.model_validate({}) and model_validate dicts for enum coercion, PurePosixPath for File.directory (not Path), Mapping on gateway stubs, and narrowing mocked HTTP request bodies before parse_qs.

^{Reviewed by Cursor Bugbot for commit 1d0b323. Configure here.}

[semanticdiff-com]

Review changes with  

Changed Files

File	Status
sdk/tests/models/test_user.py	58% smaller
sdk/tests/test_gateway.py	14% smaller
sdk/src/spectrumx/utils.py	0% smaller
sdk/tests/models/test_datasets.py	0% smaller
sdk/tests/ops/test_captures.py	0% smaller
sdk/tests/ops/test_files.py	0% smaller