Add tests for MongoDB and fix bugs #1290

	# Modified from GitHub Actions template

	name: Tests

	on:
	push:
	branches: [master]
	pull_request:
	branches: [master]

	jobs:
	run-tests:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.9', '3.10', '3.11']
	services:
	mongodb:
	image: mongo:6.0.13
	ports:
	- 27017:27017
	options: >-
	--health-cmd mongosh
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	steps:
	- uses: actions/checkout@v2
	- name: Setup Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install --upgrade setuptools wheel
	pip install numpy
	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	- name: Test with pytest
	run: \|
	pytest --cov=vivarium

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