def METHOD_NAME(self, mock_check_call):
    with mock.patch.dict(os.environ):
        os.environ.pop('PYTHONHOME', None)
        # The mocked subprocess.check_call fakes a no-error process.
        script_helper.interpreter_requires_environment()
        self.assertFalse(script_helper.interpreter_requires_environment())
        self.assertEqual(1, mock_check_call.call_count)