feat(tests): add unit test infrastructure

[arunsanna]

Summary

• Fixes Enhancement: Add unit test infrastructure #15 - Add unit test infrastructure for the AIBOM Generator
• Enables offline testing with mocked HuggingFace API
• 22 tests covering core functionality

Changes

New Files

tests/
├── __init__.py
├── conftest.py              # Shared fixtures with mock HF API
├── test_generator.py        # 15 generator tests
├── test_scoring.py          # 7 scoring tests
├── fixtures/
│   ├── sample_model_card.json
│   └── expected_aibom.json
pytest.ini                   # pytest configuration

Modified Files

• requirements.txt - Added test dependencies (pytest, pytest-mock, pytest-cov, jsonschema)

Test Coverage

Category	Tests	Status
Generator initialization	1	✅
AIBOM structure	6	✅
PURL encoding	2	1 ✅, 1 xfail*
Model card extraction	2	✅
Error handling	2	✅
Model ID normalization	2	✅
Completeness scoring	5	✅
Field validation	2	✅

*PURL encoding test marked as xfail until PR #18 is merged

Test Results

======================== 21 passed, 1 xfailed in 0.91s =========================

How to Run Tests

# In Docker
docker run --rm --entrypoint pytest aibom-test tests/ -v

# Or locally with pytest installed
pytest tests/ -v

Benefits

• Catch regressions before deployment
• Enable offline development/testing
• Support for CI/CD integration
• Easier onboarding for new contributors

[Copilot]

Pull request overview

This PR adds comprehensive unit test infrastructure to the AIBOM Generator project, enabling offline testing with mocked HuggingFace API responses. The PR addresses issue #15 by implementing pytest-based testing with 22 tests covering core generator and scoring functionality.

Changes:

• Added test infrastructure with pytest fixtures for mocking HuggingFace API interactions
• Implemented 15 generator tests covering AIBOM structure, PURL encoding, model card extraction, and error handling
• Implemented 7 scoring tests for completeness score validation
• Added test dependencies to requirements.txt (pytest, pytest-mock, pytest-cov, jsonschema)

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tests/init.py	Empty test suite initialization file with comment
tests/conftest.py	Shared pytest fixtures providing mock HuggingFace API and model objects
tests/test_generator.py	Unit tests for AIBOMGenerator covering AIBOM structure, PURL, error handling, and normalization
tests/test_scoring.py	Unit tests for completeness scoring functionality
tests/fixtures/sample_model_card.json	Sample model metadata fixture for testing
tests/fixtures/expected_aibom.json	Expected AIBOM output structure for validation
pytest.ini	Pytest configuration file
requirements.txt	Added test dependencies

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[arunsanna]

Copilot Review Feedback Addressed ✅

Fixed all 5 inline comments:

File	Line	Fix
test_generator.py	89	Removed unused result variable
test_generator.py	103	Simplified xfail reason to "PR #18"
test_scoring.py	9	Removed unused import pytest
test_scoring.py	66	Replaced permissive or assertion with specific checks
test_scoring.py	80	Replaced permissive or assertion with score threshold check

[afogel]

I also added tests for my feature -- I think this should probably be in a different requirements file, e.g. requirements-dev.txt, no? ideally, it would nice to use uv and pyproject.toml to have even more granular control, but at the very least we shouldn't allow for installing dev deps in every pip install, right?

[arunsanna]

✅ Testing Completed - VERIFIED

Test Space: https://megamind1-aibom-pr20-unit-tests.hf.space

Test Results

Test	Result
App functionality	✅ Working
Test files present	✅ Confirmed

Files Verified

• tests/test_generator.py ✓
• tests/test_scoring.py ✓
• tests/test_validation.py ✓
• pytest.ini ✓

Ready for merge. ✓

[arunsanna]

Status Update: Superseded by v0.2

The unit test infrastructure has been incorporated into the v0.2 branch architecture.

Evidence: tests/ directory exists with:

• test_validation.py
• test_service.py
• test_scoring.py
• test_license_utils.py

This PR can be closed as the test infrastructure is already in v0.2.