Add unit tests for get volume function #3

# to view logs

	name: Python CI

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

	jobs:
	UnitTests:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [ "3.10" ]
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Cache pip
	uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/test_requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: Install dependencies
	run: \|
	pip install -r test_requirements.txt
	pip install .
	- name: Run unit tests
	run: \|
	py.test tests/*_test.py

	linting:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Cache pip
	uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/test_requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: Linting with pycodestyle
	run: \|
	pip install pycodestyle
	find . -name \*.py -exec pycodestyle --ignore=E501,E402 {} +
	- name: Linting with pydocstyle
	run: \|
	pip install pydocstyle
	find sonyapilib -name \*.py -exec pydocstyle --add-ignore=D400 {} +
	- name: Linting with pylint
	run: \|
	pip install pylint
	pip install -r test_requirements.txt
	pip install .
	find sonyapilib -name \*.py -exec pylint -d C0302 {} +
	- name: Linting with pyflakes
	run: \|
	pip install pyflakes
	find . -name \*.py -exec pyflakes {} +
	- name: Linting with flake8
	run: \|
	pip install flake8
	find . -name \*.py -exec flake8 --ignore=E501,E402 {} +

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