[Issue-46] remove redundant `to-requirements.txt` installation to the file #43

	name: Test-and-lint

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

	jobs:
	test-and-lint:
	name: Test and lint the library codebase
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@master
	- name: Set up Python 3.9
	uses: actions/setup-python@v1
	with:
	python-version: 3.9
	- name: Install requirements.txt
	run: >-
	python -m
	pip install -r requirements.txt
	- name: Install requirements.test.txt
	run: >-
	python -m
	pip install -r requirements.test.txt
	- name: Run unit tests
	run: >-
	python -m pytest tests/unittests
	- name: Run linters
	run: \|
	python -m flake8 requirements_txt --ignore=E501
	python -m black requirements_txt --check

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