make separate traverse_topological key_selector version #157

	name: pytest

	on:
	push:
	pull_request:
	workflow_dispatch:

	jobs:
	build:

	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	python-version: [3.7, 3.8, 3.9]

	steps:
	- uses: actions/checkout@v2
	- name: Set up 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 pytest
	- name: Install project
	run: \|
	pip install .
	#- name: Lint with flake8
	# run: \|
	# # stop the build if there are Python syntax errors or undefined names
	# flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	# flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Test with pytest
	run: \|
	pytest

	coverage:
	needs: build
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.8
	uses: actions/setup-python@v2
	with:
	python-version: 3.8
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest coverage
	- name: Install project
	run: \|
	pip install .
	- name: Coverage report
	run: \|
	coverage run -m pytest
	coverage report -m
	- uses: codecov/codecov-action@v1
	name: Upload coverage to Codecov
	with:
	fail_ci_if_error: true

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