chore(common): extend getRequiredEnvVar method to check empty values #30

	# This workflow verifies that:
	# - Dependency licenses compliance
	name: library-solidity-integrity-checks

	on:
	pull_request:

	permissions: {}

	concurrency:
	group: library-solidity-integrity-checks-${{ github.ref }}
	cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}

	jobs:
	check-changes:
	name: library-solidity-integrity-checks/check-changes
	permissions:
	contents: 'read' # Required to checkout repository code
	runs-on: ubuntu-latest
	outputs:
	changes-library-solidity: ${{ steps.filter.outputs.library-solidity }}
	steps:
	- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	with:
	persist-credentials: 'false'
	- uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
	id: filter
	with:
	filters: \|
	library-solidity:
	- .github/workflows/library-solidity-integrity-checks.yml
	- library-solidity/**
	- ci/check_spdx_licenses.sh

	contract-integrity-checks:
	name: library-solidity-integrity-checks/contract-integrity-checks (bpr)
	needs: check-changes
	if: ${{ needs.check-changes.outputs.changes-library-solidity == 'true' }}
	permissions:
	contents: 'read' # Required to checkout repository code
	runs-on: ubuntu-latest
	steps:
	- name: Checkout project
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	with:
	persist-credentials: 'false'

	- name: Check SPDX license headers
	working-directory: library-solidity
	run: make check-spdx-headers

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