Implements Friends of Friends Sampling function #188

	name: pytest

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

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.9", "3.10", "3.11"]

	steps:
	- name: Checkout github repo
	uses: actions/checkout@v2

	- name: Install poetry
	run: pipx install poetry

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v3
	with:
	python-version: ${{ matrix.python-version }}
	cache: "poetry"

	# galsim needs this.
	- name: Install FFTW
	run: \|
	sudo apt-get install libfftw3-dev

	- name: Install poetry dependencies
	run: \|
	poetry install --with scarlet

	- name: Install Scarlet
	run: \|
	poetry run pip install "pybind11[global]" peigen
	poetry run pip install git+https://github.com/pmelchior/scarlet.git

	- name: Run Tests
	run: \|
	poetry run pytest --cov=./btk --cov-report=xml --durations=0

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v1
	with:
	token: ${{ secrets.CODECOV_TOKEN }}
	file: ./coverage.xml
	flags: unittests
	env_vars: OS,PYTHON
	name: codecov-umbrella
	fail_ci_if_error: true

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