(self, child, terminal_input)
| 2580 | signal.signal(signal.SIGHUP, old_sighup) |
| 2581 | |
| 2582 | def _run_child(self, child, terminal_input): |
| 2583 | r, w = os.pipe() # Pipe test results from child back to parent |
| 2584 | try: |
| 2585 | pid, fd = pty.fork() |
| 2586 | except (OSError, AttributeError) as e: |
| 2587 | os.close(r) |
| 2588 | os.close(w) |
| 2589 | self.skipTest("pty.fork() raised {}".format(e)) |
| 2590 | raise |
| 2591 | |
| 2592 | if pid == 0: |
| 2593 | # Child |
| 2594 | try: |
| 2595 | os.close(r) |
| 2596 | with open(w, "w") as wpipe: |
| 2597 | child(wpipe) |
| 2598 | except: |
| 2599 | traceback.print_exc() |
| 2600 | finally: |
| 2601 | # We don't want to return to unittest... |
| 2602 | os._exit(0) |
| 2603 | |
| 2604 | # Parent |
| 2605 | os.close(w) |
| 2606 | os.write(fd, terminal_input) |
| 2607 | |
| 2608 | # Get results from the pipe |
| 2609 | with open(r, encoding="utf-8") as rpipe: |
| 2610 | lines = [] |
| 2611 | while True: |
| 2612 | line = rpipe.readline().strip() |
| 2613 | if line == "": |
| 2614 | # The other end was closed => the child exited |
| 2615 | break |
| 2616 | lines.append(line) |
| 2617 | |
| 2618 | # Check the result was got and corresponds to the user's terminal input |
| 2619 | if len(lines) != 2: |
| 2620 | # Something went wrong, try to get at stderr |
| 2621 | # Beware of Linux raising EIO when the slave is closed |
| 2622 | child_output = bytearray() |
| 2623 | while True: |
| 2624 | try: |
| 2625 | chunk = os.read(fd, 3000) |
| 2626 | except OSError: # Assume EIO |
| 2627 | break |
| 2628 | if not chunk: |
| 2629 | break |
| 2630 | child_output.extend(chunk) |
| 2631 | os.close(fd) |
| 2632 | child_output = child_output.decode("ascii", "ignore") |
| 2633 | self.fail("got %d lines in pipe but expected 2, child output was:\n%s" |
| 2634 | % (len(lines), child_output)) |
| 2635 | |
| 2636 | # bpo-40155: Close the PTY before waiting for the child process |
| 2637 | # completion, otherwise the child process hangs on AIX. |
| 2638 | os.close(fd) |
| 2639 |
no test coverage detected