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from __future__ import annotations
import importlib.util
from io import BufferedWriter
from os import devnull
from typing import TYPE_CHECKING
from unittest.mock import Mock, call
import streamlink_cli.compat
if TYPE_CHECKING:
import pytest
def test_no_stdout(monkeypatch: pytest.MonkeyPatch):
monkeypatch.setattr("sys.stdout", None)
mock_atexit_register = Mock()
monkeypatch.setattr("atexit.register", mock_atexit_register)
spec = importlib.util.find_spec("streamlink_cli.compat")
assert spec
assert spec.loader
module = importlib.util.module_from_spec(spec)
assert module is not streamlink_cli.compat
spec.loader.exec_module(module)
assert module.sys.stdout is None
assert isinstance(module.stdout, BufferedWriter)
assert module.stdout.name == devnull
assert mock_atexit_register.call_args_list == [call(module.stdout.close)]
module.stdout.close() # close manually, since we've mocked the atexit.register() call
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