chore: switch pytest to importlib import mode for monorepo#50
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- Add --import-mode=importlib to root pytest config - Move cell2zarr test helpers from conftest.py to src/cell2zarr/_testing.py - Remove tests/__init__.py files (not needed with importlib mode) This allows uv run pytest (and pytest-watcher) to work from the monorepo root without test module name collisions across packages. pytest recommends importlib mode for new projects.
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Summary
Switch pytest to
--import-mode=importlibsouv run pytest(andptw) work from the monorepo root without test module name collisions.pyproject.tomlconftest.pytosrc/cell2zarr/_testing.py(conftest should only contain fixtures, not importable helpers)tests/__init__.pyfiles (importlib mode doesn't need them)pytest officially recommends importlib mode for new/modern projects — see https://docs.pytest.org/en/stable/explanation/pythonpath.html#which-import-mode
Test plan
uv run pytestfrom root → 181 tests passmake test→ 84 tests pass (api)make test-cell2zarr→ 69 tests pass