Use session to save metadata. #1774

	name: CI

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

	jobs:
	test-ubuntu:
	name: "pytest on ${{ matrix.python-version }} on ${{ matrix.os }}"
	runs-on: "${{ matrix.os }}"
	strategy:
	matrix:
	python-version: ["3.10", "3.11"]
	os: [ubuntu-latest]
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v1
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	pip install pytest
	pip install pytest-xdist
	pip install pytest-cov
	pip install -r requirements.txt
	- name: Test with pytest and generate coverage report
	run: \|
	pytest -n auto --cov=langfun --cov-report=xml
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v2
	with:
	file: ./coverage.xml
	token: ${{ secrets.CODECOV_TOKEN }}
	verbose: true
	# The below step just reports the success or failure of tests as a "commit status".
	# This is needed for copybara integration.
	- name: Report success or failure as github status
	if: always()
	shell: bash
	run: \|
	status="${{ job.status }}"
	lowercase_status=$(echo $status \| tr '[:upper:]' '[:lower:]')
	curl -sS --request POST \
	--url https://api.github.com/repos/${{ github.repository }}/statuses/${{ github.sha }} \
	--header 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
	--header 'content-type: application/json' \
	--data '{
	"state": "'$lowercase_status'",
	"target_url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
	"description": "'$status'",
	"context": "github-actions/Build"
	}'

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