Raise IndexError in `Spanner` object instead of `ValueError` #2700

	name: Test

	on:
	push:
	branches:
	- main
	- release/*
	pull_request:
	branches:
	- main
	- release/*
	workflow_call:
	workflow_dispatch: {}
	jobs:
	pytest:
	timeout-minutes: 30
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python_version:
	- "3.9"
	install_version:
	- "[all]"
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python_version }}
	- name: Cache pip
	uses: actions/cache@v3
	with:
	# This path is specific to Ubuntu
	path: ~/.cache/pip
	# Look to see if there is a cache hit for the corresponding requirements file
	key: ${{ runner.os }}-pip-${{ hashFiles('setup.py') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	${{ runner.os }}-
	- name: Setup
	run: \|
	set -ex
	python -m pip install --upgrade pip wheel
	python -m pip install -e .${{ matrix.install_version }}
	- name: Run Tests
	# TODO: stop using pytest-split and remove low coverage requirement once C++ shared mem impl is done!
	# Jira link for above: https://mosaicml.atlassian.net/browse/STR-107
	id: tests
	run: \|
	set -ex
	pytest --splits 11 --group 1 --cov-fail-under=10
	pytest --splits 11 --group 2 --cov-fail-under=10
	pytest --splits 11 --group 3 --cov-fail-under=10
	pytest --splits 11 --group 4 --cov-fail-under=10
	pytest --splits 11 --group 5 --cov-fail-under=10
	pytest --splits 11 --group 6 --cov-fail-under=10
	pytest --splits 11 --group 7 --cov-fail-under=10
	pytest --splits 11 --group 8 --cov-fail-under=10
	pytest --splits 11 --group 9 --cov-fail-under=10
	pytest --splits 11 --group 10 --cov-fail-under=10
	pytest --splits 11 --group 11 --cov-fail-under=10

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