Add test for toml-based pp split points #1760

	name: CPU Unit Test

	on:
	push:
	branches: [ main ]
	pull_request:

	concurrency:
	group: unit-test${{ github.workflow }}-${{ github.ref == 'refs/heads/main' && github.run_number \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	build-test:
	uses: pytorch/test-infra/.github/workflows/linux_job.yml@main
	with:
	docker-image: torchtitan-ubuntu-20.04-clang12
	repository: pytorch/torchtitan
	script: \|
	set -eux

	# The generic Linux job chooses to use base env, not the one setup by the image
	CONDA_ENV=$(conda env list --json \| jq -r ".envs \| .[-1]")
	conda activate "${CONDA_ENV}"

	pip config --user set global.progress_bar off

	pip install --force-reinstall --pre torch --index-url https://download.pytorch.org/whl/nightly/cpu
	pytest test --cov=. --cov-report=xml --durations=20 -vv

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