added unit tests to tox, and also sbom generation

.gitignore

-# Byte-compiled / optimized / DLL files
-__pycache__/
-*.py[cod]
-*$py.class
-
-# C extensions
-*.so
-
-# Distribution / packaging
-build/
-dist/
-*.egg-info/
-
-# Installer logs
-pip-log.txt
-pip-delete-this-directory.txt
-
-# Virtual environments
-venv/
-.env
-.venv/
-
-# PyInstaller
-*.manifest
-*.spec
-
-# Unit test / coverage reports
-htmlcov/
-.tox/
-.nox/
-.coverage
+.tox
+bom.json
 coverage.xml
-.cache
-.pytest_cache/
-
-# Sphinx documentation
-docs/_build/
-
-# Editor / OS junk
+.coverage
+htmlcov
+*.egg-info
+__pycache__
+.vscode
+docs/build
 .DS_Store
-Thumbs.db
-.idea/
-.vscode/
-*.swp
-*.swo
+
+# drawio tmp files
+*.bkp
\ No newline at end of file

tox.ini

 [tox]
 envlist = lint, typecheck, docs
 
+[testenv:coverage]
+description = Run unit tests and save coverage
+deps =
+  pytest
+  pytest-cov
+  httpx  # required for fastapi TestClient
+  responses
+commands =
+  coverage erase
+  pytest --cov mapping_provider --cov-fail-under=80 --cov-report html --cov-report xml --cov-report term -p no:checkdocs
+
 [testenv:lint]
 description = Lint code with Ruff
 deps = ruff
@@ -14,6 +25,11 @@ deps =
     types-requests
 commands = mypy mapping_provider
 
+[testenv:sbom]
+description = Create SBOM for dependency analysis
+deps = cyclonedx-py
+commands = cyclonedx-py environment --output-format json -o bom.json
+
 [testenv:docs]
 description = Build docs
 deps =