3 and 4 channels default to rgb #1129

	name: Test

	on:
	push:
	branches: [main]
	tags:
	- "v" # Push events to matching v, i.e. v1.0, v20.15.10
	pull_request:
	branches: "*"

	jobs:
	test:
	runs-on: ${{ matrix.os }}
	defaults:
	run:
	shell: bash -e {0} # -e to fail on error

	strategy:
	fail-fast: false
	matrix:
	python: ["3.9", "3.12"]
	os: [ubuntu-latest]
	include:
	- os: macos-latest
	python: "3.9"
	- os: macos-latest
	python: "3.12"
	pip-flags: "--pre"
	name: "Python 3.12 (pre-release)"

	env:
	OS: ${{ matrix.os }}
	PYTHON: ${{ matrix.python }}

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python }}
	cache: pip

	- name: Get pip cache dir
	id: pip-cache-dir
	run: \|
	echo "::set-output name=dir::$(pip cache dir)"
	- name: Restore pip cache
	uses: actions/cache@v2
	with:
	path: ${{ steps.pip-cache-dir.outputs.dir }}
	key: pip-${{ runner.os }}-${{ env.pythonLocation }}-${{ hashFiles('**/pyproject.toml') }}
	restore-keys: \|
	pip-${{ runner.os }}-${{ env.pythonLocation }}-
	- name: Install test dependencies
	run: \|
	python -m pip install --upgrade pip wheel
	pip install pytest-cov
	- name: Install dependencies
	run: \|
	pip install ${{ matrix.pip-flags }} -e ".[dev,test,torch]"
	- name: Test
	env:
	MPLBACKEND: agg
	PLATFORM: ${{ matrix.os }}
	DISPLAY: :42
	run: \|
	pytest --cov --color=yes --cov-report=xml
	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v4
	with:
	name: coverage
	verbose: true
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

Provide feedback