Add unit test and github workflow #1

	name: Code Coverage

	on:
	push:
	branches:
	- main
	- master
	pull_request:
	branches:
	- main
	- master

	jobs:
	coverage:
	name: Generate Coverage Report
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	cache: 'pip'

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -e .
	pip install pytest==8.4.2 pytest-mock==3.14.0 pytest-asyncio==0.25.2
	pip install pytest-cov

	- name: Run tests with coverage
	run: \|
	pytest tests/ \
	--cov=src/backend \
	--cov-report=xml \
	--cov-report=term-missing \
	--cov-report=html \
	-v

	- name: Upload coverage to Codecov (optional)
	uses: codecov/codecov-action@v4
	if: github.event_name == 'pull_request'
	continue-on-error: true
	with:
	file: ./coverage.xml
	flags: unittests
	name: codecov-umbrella
	fail_ci_if_error: false

	- name: Upload coverage HTML report as artifact
	uses: actions/upload-artifact@v4
	if: always()
	with:
	name: coverage-report
	path: htmlcov/
	retention-days: 7

	- name: Coverage Summary
	run: \|
	echo "## Coverage Report" >> $GITHUB_STEP_SUMMARY
	python -m coverage report --format=markdown >> $GITHUB_STEP_SUMMARY

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