def result(self, r: bool) -> None:
message, color = {True: ('OK ', 92), False: ('FAIL', 91)}[r]
length = len(message)
- cols = shutil.get_terminal_size().columns
+ cols = shutil.get_terminal_size().columns or 80
pad = (cols - (self.line_length + length)) % cols
print(' ' * pad + self._color(message, color), file=sys.stderr)
self.line_length = 0