unit and integration test improvement + explainer module #321

	name: unit tests

	on:
	push:
	branches: [ main , release ]
	pull_request:
	branches: [ main , release ]

	jobs:
	build:
	runs-on: ubuntu-latest
	timeout-minutes: 30
	strategy:
	matrix:
	python-version: [3.8, 3.9, '3.10']
	steps:
	- uses: actions/checkout@v3

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

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install pytest
	pip install -r requirements.txt
	pip install pytest-cov
	pip uninstall -y numpy
	pip install numpy==1.23.5

	- name: Test with pytest and report
	run: \|
	pytest --cov=fedot_ind --cov-report xml:coverage.xml tests/unit

	- name: Codecov-coverage
	uses: codecov/codecov-action@v3
	with:
	file: ./coverage.xml
	flags: unittests

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