fix import of warnings.warn #383

	name: Linux JS Tests

	on:
	push:
	branches: '*'
	pull_request:
	branches: '*'

	jobs:
	build:
	runs-on: ${{ matrix.os }}-latest
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu, macos]
	group: [notebook, base, services]
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Python
	uses: actions/setup-python@v1
	with:
	python-version: 3.8
	- name: Set up Node
	uses: actions/setup-node@v1
	with:
	node-version: '12.x'

	- name: Cache node modules
	uses: actions/cache@v2
	env:
	cache-name: cache-node-modules
	with:
	# npm cache files are stored in `~/.npm` on Linux/macOS
	path: ~/.npm
	key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
	restore-keys: \|
	${{ runner.os }}-build-${{ env.cache-name }}-
	${{ runner.os }}-build-
	${{ runner.os }}-

	- name: Cache pip on Linux
	uses: actions/cache@v1
	if: startsWith(runner.os, 'Linux')
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ matrix.python }}-${{ hashFiles('**/requirements.txt', 'setup.py') }}
	restore-keys: \|
	${{ runner.os }}-pip-${{ matrix.python }}

	- name: Temporary workaround for sanitizer loading in JS Tests
	run: \|
	cp tools/security_deprecated.js notebook/static/base/js/security.js

	- name: Install dependencies
	run: \|
	pip install --upgrade pip
	pip install --upgrade setuptools wheel
	npm install
	npm install -g casperjs@1.1.3 phantomjs-prebuilt@2.1.7
	pip install .[test]

	- name: Run Tests
	run: \|
	python -m notebook.jstest ${{ matrix.group }}

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