Present image load errors as message boxes #1310

	name: test

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

	jobs:
	pytest:
	name: ${{ matrix.config.name }}
	runs-on: ${{ matrix.config.os }}
	strategy:
	fail-fast: true
	matrix:
	python-version: ['3.10', '3.11']
	config:
	- {
	name: "Linux",
	os: ubuntu-latest
	}
	- {
	name: "MacOSX",
	os: macos-latest
	}
	- {
	name: "Windows",
	os: windows-latest
	}
	defaults:
	run:
	shell: bash

	steps:

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

	- name: Checkout HEXRD
	uses: actions/checkout@v4
	with:
	repository: HEXRD/hexrd
	path: hexrd

	- name: Checkout HEXRDGUI
	uses: actions/checkout@v4
	with:
	path: hexrdgui

	- name: Checkout examples
	uses: actions/checkout@v4
	with:
	repository: HEXRD/examples
	path: examples

	- name: Install EGL on Linux (PySide6 needs it)
	if: ${{ matrix.config.name == 'Linux' }}
	run: sudo apt-get install -y libegl1-mesa-dev

	- name: Set environment variable to work around setuptools/numpy issue
	run: echo 'SETUPTOOLS_USE_DISTUTILS=stdlib' >> $GITHUB_ENV
	if: ${{ matrix.config.name == 'Windows' }}

	- name: Install HEXRD
	run: \|
	pip install .
	working-directory: hexrd

	- name: Install HEXRDGUI
	run: \|
	pip install .
	working-directory: hexrdgui

	- name: Install requirements.txt
	run: \|
	pip install -r tests/requirements.txt
	working-directory: hexrdgui

	- name: Run tests
	env:
	HEXRD_EXAMPLE_REPO_PATH: ${{ github.workspace }}/examples
	run: \|
	QT_QPA_PLATFORM=offscreen pytest -s tests/
	working-directory: hexrdgui

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