[maintenance] Add coverage report in PR's comment #16

	name: Python Unittest Coverage

	on: [push, pull_request]

	jobs:
	test:
	if: false == contains(github.event.pull_request.title, 'WIP')
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	python-version: ['3.9']
	env:
	OS: ${{ matrix.os }}
	PYTHON: '3.9'
	timeout-minutes: 20
	steps:
	- uses: actions/checkout@master
	- name: Setup Python ${{ matrix.python-version }}
	uses: actions/setup-python@master
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install Dependencies
	run: \|
	pip install -q -e .[full]
	- name: Run tests with coverage
	run: \|
	coverage run tests/run.py
	- name: Generate coverage report
	run: \|
	coverage report -m > coverage.txt
	- name: Update or Post coverage report as PR comment
	if: github.event_name == 'pull_request'
	uses: actions/github-script@v3
	with:
	github-token: ${{secrets.CODE_COV_PAT}}
	script: \|
	const fs = require('fs');
	const report = fs.readFileSync('coverage.txt', {encoding:'utf8', flag:'r'});
	const commentIdentifier = '<!-- coverage-comment -->';
	const commentBody = `${commentIdentifier}\n📊 Coverage Report:\n\`\`\`\n${report}\n\`\`\``;

	const issue_number = context.issue.number;
	const comments = await github.issues.listComments({
	...context.repo,
	issue_number
	});

	const coverageComment = comments.data.find(comment => comment.body.includes(commentIdentifier));

	if (coverageComment) {
	await github.issues.updateComment({
	...context.repo,
	comment_id: coverageComment.id,
	body: commentBody
	});
	} else {
	await github.issues.createComment({
	...context.repo,
	issue_number,
	body: commentBody
	});
	}

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