Rework sha logic for workflow #8

	name: Generate comparison results

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the main and develop branches.
	on:
	push:
	branches: [ main, develop ]
	pull_request:
	branches: [ main, develop ]

	jobs:
	generate:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3
	with:
	ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.sha \|\| github.event.before }}

	- name: Set up latest Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.10"
	cache: 'pip'

	- name: Install dependencies
	run: \|
	python3 -m pip install --upgrade pip
	python3 -m pip install -r requirements.txt

	- name: Generate comparison results
	run: \|
	python3 -m test.simple_ci --generate

	- name: Upload test data
	uses: actions/upload-artifact@v3
	with:
	name: test-data-${{ github.event_name == 'pull_request' && github.event.pull_request.base.sha \|\| github.event.before }}
	path: test/data/

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