pi-hole/test/test_shellcheck.py

import pytest
import testinfra

run_local = testinfra.get_backend(
    "local://"
).get_module("Command").run

def test_scripts_pass_shellcheck():
    ''' Make sure shellcheck does not find anything wrong with our shell scripts '''
    shellcheck = "find . -name 'update.sh' | while read file; do shellcheck \"$file\"; done;"
    results = run_local(shellcheck)
    print results.stdout
    assert '' == results.stdout