Method check_dump_traceback_later

Lib/test/test_faulthandler.py:636–697

Check how many times the traceback is written in timeout x 2.5 seconds, or timeout x 3.5 seconds if cancel is True: 1, 2 or 3 times depending on repeat and cancel options. Raise an error if the output doesn't match the expect format.

(self, repeat=False, cancel=False, loops=1,
                                   *, filename=None, fd=None)

            self.check_dump_traceback_threads(filename)

    def check_dump_traceback_later(self, repeat=False, cancel=False, loops=1,
                                   *, filename=None, fd=None):
        """
        Check how many times the traceback is written in timeout x 2.5 seconds,
        or timeout x 3.5 seconds if cancel is True: 1, 2 or 3 times depending
        on repeat and cancel options.

        Raise an error if the output doesn't match the expect format.
        """
        timeout_str = str(datetime.timedelta(seconds=TIMEOUT))
        code = """
            import faulthandler
            import time
            import sys

            timeout = {timeout}
            repeat = {repeat}
            cancel = {cancel}
            loops = {loops}
            filename = {filename!r}
            fd = {fd}

            def func(timeout, repeat, cancel, file, loops):
                for loop in range(loops):
                    faulthandler.dump_traceback_later(timeout, repeat=repeat, file=file)
                    if cancel:
                        faulthandler.cancel_dump_traceback_later()
                    time.sleep(timeout * 5)
                    faulthandler.cancel_dump_traceback_later()

            if filename:
                file = open(filename, "wb")
            elif fd is not None:
                file = sys.stderr.fileno()
            else:
                file = None
            func(timeout, repeat, cancel, file, loops)
            if filename:
                file.close()
            """
        code = code.format(
            timeout=TIMEOUT,
            repeat=repeat,
            cancel=cancel,
            loops=loops,
            filename=filename,
            fd=fd,
        )
        trace, exitcode = self.get_output(code, filename)
        trace = '\n'.join(trace)

        if not cancel:
            count = loops
            if repeat:
                count *= 2
            header = (fr'Timeout \({timeout_str}\)!\n'
                      fr'{THREAD_HEADER}\n')
            regex = expected_traceback(17, 26, header, min_count=count)