Specify default train_len for iterator dataset #427

	name: "Pre-review Tests"

	on: [push, pull_request]

	jobs:
	test:
	runs-on: ubuntu-22.04
	strategy:
	matrix:
	torch: ['1.10.', '1.11.', '1.12.', '1.13.', '2.0.*']

	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	submodules: recursive

	- name: Setup Python
	uses: actions/setup-python@v2
	with:
	python-version: '3.8'

	- uses: actions/cache@v3
	with:
	path: \|
	~/.cache
	key: ${{ runner.os }}-pip-${{ hashFiles('**/setup.py') }}-${{ matrix.torch }}
	restore-keys: \|
	${{ runner.os }}-pip-

	- name: Install
	run: \|
	pip install -U pip wheel
	pip install -e .[test] torch==${{ matrix.torch }} --extra-index-url https://download.pytorch.org/whl/cpu
	# Test PPE is importable with minimum dependency
	python -c 'import pytorch_pfn_extras'

	- name: Code Style
	run: \|
	make lint

	- name: Code Style (Examples)
	run: \|
	make example_lint

	- name: Test CPU only
	run: \|
	make cputest

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