Update nchoosek_constraint.md #25

	name: Tests
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	testing:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: 3.9
	- name: Black, flake8 & isort
	run: \|
	pip install black==22.3.0 isort==5.9.3 flake8==3.9.2
	black --check doe test
	flake8 --verbose doe test
	isort . --check-only --verbose
	- name: Install cyipopt
	run: \|
	sudo apt-get -y --no-install-recommends install \
	coinor-libipopt1v5 \
	coinor-libipopt-dev \
	libblas-dev \
	liblapack-dev \
	g++ \
	gfortran \
	pkg-config
	pip install ipopt
	pip install .[tests]
	- name: Run tests
	run: \|
	pytest

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