test_os.py 文件源码

def test_does_not_crash(self):
        """Check if get_terminal_size() returns a meaningful value.

        There's no easy portable way to actually check the size of the
        terminal, so let's check if it returns something sensible instead.
        """
        try:
            size = os.get_terminal_size()
        except OSError as e:
            if sys.platform == "win32" or e.errno in (errno.EINVAL, errno.ENOTTY):
                # Under win32 a generic OSError can be thrown if the
                # handle cannot be retrieved
                self.skipTest("failed to query terminal size")
            raise

        self.assertGreaterEqual(size.columns, 0)
        self.assertGreaterEqual(size.lines, 0)