Fixes #960: Check for populated 'speaker_info' property before use in 'has_subwoofer' #606

	---
	name: SoCo

	on:
	push:
	branches:
	- master
	- 'v0.30.fixes'
	pull_request:
	branches:
	- master
	- 'v0.30.fixes'

	jobs:
	SoCo-Check-Jobs:
	name: SoCo Check Jobs (${{ matrix.python-version }})
	runs-on: ubuntu-20.04
	strategy:
	fail-fast: false
	matrix:
	python-version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
	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: \|
	sudo apt-get install graphviz libxml2-dev libxslt-dev python3-dev
	python -m pip install --upgrade pip
	pip install -e .
	pip install -r requirements.txt
	pip install -r requirements-dev.txt
	- name: Lint with flake8 and pylint
	run: \|
	# stop the build if there are Python syntax errors or undefined names
	flake8 soco
	flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	pylint soco
	- name: Test with pytest
	run: \|
	pytest --cov-config .coveragerc --cov soco .
	- name: Test formatting with Black
	if: matrix.python-version >= 3.8
	run: \|
	black --check soco tests
	- name: Test documentation build
	if: matrix.python-version == 3.11
	run: \|
	make docs

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