Add tests and Github Action #18

	name: Test Python package

	on: [push, pull_request]

	jobs:
	build:

	strategy:
	matrix:
	python: [3.8]
	java: [13]
	os: ['ubuntu-latest'] #
	architecture: ['x64']
	terrier: ['snapshot'] #'5.3', '5.4-SNAPSHOT',

	runs-on: ${{ matrix.os }}
	steps:

	- uses: actions/checkout@v3

	- name: Setup java
	uses: actions/setup-java@v3
	with:
	java-version: ${{ matrix.java }}
	architecture: ${{ matrix.architecture }}
	distribution: 'zulu'

	- name: Setup conda
	uses: s-weigand/setup-conda@v1
	with:
	python-version: ${{ matrix.python }}
	conda-channels: anaconda, conda-forge
	activate-conda: true

	# follows https://medium.com/ai2-blog/python-caching-in-github-actions-e9452698e98d
	- name: Loading Python & dependencies from cache
	uses: actions/cache@v3
	with:
	path: /usr/share/miniconda/lib/python3.8/site-packages/
	key: /usr/share/miniconda/lib/python3.8/site-packages/-${{ hashFiles('requirements.txt') }}

	- name: Loading Torch models from cache
	uses: actions/cache@v3
	with:
	path: /home/runner/.cache/
	key: uog44k_only

	- name: Install Python dependencies
	run: \|
	conda install pip
	conda install mkl_fft -y
	conda install -c pytorch faiss-cpu=1.6.3
	pip install --upgrade --upgrade-strategy eager git+https://github.com/terrier-org/pyterrier.git#egg=python-terrier
	pip install --upgrade --upgrade-strategy eager -r requirements.txt
	#install this software
	pip install --timeout=120 .
	pip install --upgrade --upgrade-strategy eager pytest
	conda list

	- name: All unit tests
	env:
	TERRIER_VERSION: ${{ matrix.terrier }}
	run: \|
	pytest -s

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