pytest is required but not installed by default

[iimog]

When I follow the installation instructions to install barcode-validator into a fresh environment, I get the following error:

python -m barcode_validator
Traceback (most recent call last):
  File "<frozen runpy>", line 203, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/tank/home/iimog/miniforge3/envs/joss-barcode-validator-pip/lib/python3.14/site-packages/barcode_validator/__main__.py", line 2, in <module>
    from barcode_validator.cli import BarcodeValidatorCLI
  File "/tank/home/iimog/miniforge3/envs/joss-barcode-validator-pip/lib/python3.14/site-packages/barcode_validator/cli.py", line 9, in <module>
    from .orchestrator import ValidationOrchestrator
  File "/tank/home/iimog/miniforge3/envs/joss-barcode-validator-pip/lib/python3.14/site-packages/barcode_validator/orchestrator.py", line 12, in <module>
    from .resolvers.factory import ResolverFactory
  File "/tank/home/iimog/miniforge3/envs/joss-barcode-validator-pip/lib/python3.14/site-packages/barcode_validator/resolvers/factory.py", line 4, in <module>
    from barcode_validator.resolvers.ncbi import NCBIResolver
  File "/tank/home/iimog/miniforge3/envs/joss-barcode-validator-pip/lib/python3.14/site-packages/barcode_validator/resolvers/ncbi.py", line 8, in <module>
    from tests.test_taxon import taxon
  File "/tank/home/iimog/miniforge3/envs/joss-barcode-validator-pip/lib/python3.14/site-packages/tests/test_taxon.py", line 1, in <module>
    import pytest
ModuleNotFoundError: No module named 'pytest'

The same happens if I install via pip (or uv). The simplest to reproduce this without creating a dedicated environment is with

uv run --with barcode-validator python -m barcode_validator

[iimog]

Installing pytest into the environment resolves the issue, but it would be better to include it as a requirement or make the code work without it (if not running tests).

[rvosa]

In commit 1429ded I have added pytest to the requirements.txt, which is processed when installing in a conda-based workflow. In commit 4fa298e I have done the same in the pyproject.toml. I believe this addresses the reported issue.