Fix return type on test helper #437

	name: Check

	on:
	push:
	branches:
	- main
	paths:
	- crosshair/**
	- setup.py
	- .pre-commit-config.yaml

	pull_request:
	paths:
	- crosshair/**
	- setup.py
	- .pre-commit-config.yaml

	jobs:
	Execute:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-20.04]
	python-version: [
	"3.7",
	"3.8",
	"3.9",
	"3.10",
	"3.11",
	]
	# Windows doesn't pass the test suite at the moment :(
	# include:
	# - os: windows-2016
	# python_version: "3.8.9"

	steps:
	- uses: actions/checkout@main

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

	- name: Install dependencies
	run: \|
	python3 -m pip install --upgrade pip
	# Vanilla install and smoke test, just to make sure we do
	# not accidentally add an import for a [dev] dependency:
	pip3 install -e .
	crosshair -h
	# Now add the dev dependencies, so we can use them for testing.
	pip3 install -e .[dev]

	- name: Run checks
	run: \|
	pre-commit run --all-files --hook-stage manual

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