test_shutil.py 文件源码

def test_os_environ_first(self):
        "Check if environment variables have precedence"

        with support.EnvironmentVarGuard() as env:
            env['COLUMNS'] = '777'
            size = shutil.get_terminal_size()
        self.assertEqual(size.columns, 777)

        with support.EnvironmentVarGuard() as env:
            env['LINES'] = '888'
            size = shutil.get_terminal_size()
        self.assertEqual(size.lines, 888)