yt-dlp/test/test_execution.py

import unittest

import sys
import os
import subprocess

rootDir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

try:
    _DEV_NULL = subprocess.DEVNULL
except AttributeError:
    _DEV_NULL = open(os.devnull, 'wb')

class TestExecution(unittest.TestCase):
    def test_import(self):
        subprocess.check_call([sys.executable, '-c', 'import youtube_dl'], cwd=rootDir)

    def test_module_exec(self):
        if sys.version_info >= (2,7): # Python 2.6 doesn't support package execution
            subprocess.check_call([sys.executable, '-m', 'youtube_dl', '--version'], cwd=rootDir, stdout=_DEV_NULL)

    def test_main_exec(self):
        subprocess.check_call([sys.executable, 'youtube_dl/__main__.py', '--version'], cwd=rootDir, stdout=_DEV_NULL)

if __name__ == '__main__':
    unittest.main()