AlluraTest/alluratest/test_syntax.py

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import os.path
import re
from subprocess import Popen, PIPE
import sys

dir = os.path.abspath(os.path.dirname(__file__) + "/..")


def run(cmd, dir=dir):
    proc = Popen(cmd, shell=True, cwd=dir, stdout=PIPE, stderr=PIPE)
    # must capture & reprint stdount, so that test suite can capture it
    (stdout, stderr) = proc.communicate()
    stdout = stdout.decode('utf-8')
    stderr = stderr.decode('utf-8')
    if re.match(r'xargs: .* No such file', stderr):
        raise Exception(stderr)
    print(stdout, end='')
    print(stderr, end='', file=sys.stderr)
    return (proc.returncode, proc.communicate())


def test_run_precommit():
    cmd = "pre-commit run --all-files"
    code, outputs = run(cmd, dir=os.environ.get('ALLURA_GIT_DIR'))
    if code != 0:
        raise Exception(f'pre-commit failed to run: {outputs[0].decode()} {outputs[1].decode()}')