Merge branch 'main' into nicer-workbooks #27439

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	# If you change this name, don't forget to change deploy-to-alpha.yml
	name: Unit tests

	on:
	push:
	pull_request:
	workflow_dispatch: {} # Allow running the workflow on-demand

	jobs:
	# This identifier gets used in .mergify.yml
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python 3.12
	uses: actions/setup-python@v4
	with:
	python-version: 3.12
	cache: 'pip'
	- name: Set up NodeJS 16
	uses: actions/setup-node@v3
	with:
	node-version: 16
	cache: 'npm'
	- name: Install Python dependencies
	run: \|
	python3 -m pip install --upgrade pip
	pip3 install -r requirements.txt
	- name: Install Nodejs dependencies
	run: \|
	npm ci
	- name: Prepare backend
	run: \|
	doit run backend

	# This code is also in 'update-javascript-on-main'
	- name: Calculate hedy cache key
	run: "echo value=$(ls -1 hedy.py hedy_.py grammars/ \| sort \| xargs tail -n 99999999 \| sha256sum \| cut -f 1 -d ' ') >> $GITHUB_OUTPUT"
	id: hedy_cache_key
	- name: Cache hedy test runs
	uses: actions/cache@v3
	with:
	path: .test-cache
	key: "hedy-test-cache-${{ steps.hedy_cache_key.outputs.value }}"

	- name: Run all tests with caching
	shell: pwsh
	run: \|
	build-tools/github/validate --all

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