feat: add unit tests for pair_tab #1363

	name: Run unittests

	on:
	- push
	- pull_request

	jobs:
	build:
	runs-on:
	group: Default

	steps:
	- uses: actions/checkout@master
	- name: Set up Python 3.10
	uses: actions/setup-python@master
	with:
	python-version: "3.10"
	- name: Install dependencies
	run: \|
	pip install -U --pre deepmd-kit --extra-index-url https://deepmodeling.github.io/deepmd-kit/simple
	pip install -e .
	pip install -r tests/requirements.txt
	- name: Test
	run: DEVICE=cpu PREPROCESS_DEVICE=cpu DISABLE_TQDM=True coverage run --source=./deepmd_pt -m unittest -v -f && coverage report
	- uses: codecov/codecov-action@v3

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