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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙfrom test.support import verbose, import_module, reap_children # Skip these tests if termios is not available import_module('termios') import errno import pty import os import sys import select import signal import socket import io # readline import unittest TEST_STRING_1 = b"I wish to buy a fish license.\n" TEST_STRING_2 = b"For my pet fish, Eric.\n" if verbose: def debug(msg): print(msg) else: def debug(msg): pass # Note that os.read() is nondeterministic so we need to be very careful # to make the test suite deterministic. A normal call to os.read() may # give us less than expected. # # Beware, on my Linux system, if I put 'foo\n' into a terminal fd, I get # back 'foo\r\n' at the other end. The behavior depends on the termios # setting. The newline translation may be OS-specific. To make the # test suite deterministic and OS-independent, the functions _readline # and normalize_output can be used. def normalize_output(data): # Some operating systems do conversions on newline. We could possibly fix # that by doing the appropriate termios.tcsetattr()s. I couldn't figure out # the right combo on Tru64. So, just normalize the output and doc the # problem O/Ses by allowing certain combinations for some platforms, but # avoid allowing other differences (like extra whitespace, trailing garbage, # etc.) # This is about the best we can do without getting some feedback # from someone more knowledgable. # OSF/1 (Tru64) apparently turns \n into \r\r\n. if data.endswith(b'\r\r\n'): return data.replace(b'\r\r\n', b'\n') if data.endswith(b'\r\n'): return data.replace(b'\r\n', b'\n') return data def _readline(fd): """Read one line. May block forever if no newline is read.""" reader = io.FileIO(fd, mode='rb', closefd=False) return reader.readline() # Marginal testing of pty suite. Cannot do extensive 'do or fail' testing # because pty code is not too portable. # XXX(nnorwitz): these tests leak fds when there is an error. class PtyTest(unittest.TestCase): def setUp(self): old_alarm = signal.signal(signal.SIGALRM, self.handle_sig) self.addCleanup(signal.signal, signal.SIGALRM, old_alarm) old_sighup = signal.signal(signal.SIGHUP, self.handle_sighup) self.addCleanup(signal.signal, signal.SIGHUP, old_sighup) # isatty() and close() can hang on some platforms. Set an alarm # before running the test to make sure we don't hang forever. self.addCleanup(signal.alarm, 0) signal.alarm(10) def handle_sig(self, sig, frame): self.fail("isatty hung") @staticmethod def handle_sighup(signum, frame): # bpo-38547: if the process is the session leader, os.close(master_fd) # of "master_fd, slave_name = pty.master_open()" raises SIGHUP # signal: just ignore the signal. pass def test_basic(self): try: debug("Calling master_open()") master_fd, slave_name = pty.master_open() debug("Got master_fd '%d', slave_name '%s'" % (master_fd, slave_name)) debug("Calling slave_open(%r)" % (slave_name,)) slave_fd = pty.slave_open(slave_name) debug("Got slave_fd '%d'" % slave_fd) except OSError: # " An optional feature could not be imported " ... ? raise unittest.SkipTest("Pseudo-terminals (seemingly) not functional.") self.assertTrue(os.isatty(slave_fd), 'slave_fd is not a tty') # Solaris requires reading the fd before anything is returned. # My guess is that since we open and close the slave fd # in master_open(), we need to read the EOF. # Ensure the fd is non-blocking in case there's nothing to read. blocking = os.get_blocking(master_fd) try: os.set_blocking(master_fd, False) try: s1 = os.read(master_fd, 1024) self.assertEqual(b'', s1) except OSError as e: if e.errno != errno.EAGAIN: raise finally: # Restore the original flags. os.set_blocking(master_fd, blocking) debug("Writing to slave_fd") os.write(slave_fd, TEST_STRING_1) s1 = _readline(master_fd) self.assertEqual(b'I wish to buy a fish license.\n', normalize_output(s1)) debug("Writing chunked output") os.write(slave_fd, TEST_STRING_2[:5]) os.write(slave_fd, TEST_STRING_2[5:]) s2 = _readline(master_fd) self.assertEqual(b'For my pet fish, Eric.\n', normalize_output(s2)) os.close(slave_fd) # closing master_fd can raise a SIGHUP if the process is # the session leader: we installed a SIGHUP signal handler # to ignore this signal. os.close(master_fd) def test_fork(self): debug("calling pty.fork()") pid, master_fd = pty.fork() if pid == pty.CHILD: # stdout should be connected to a tty. if not os.isatty(1): debug("Child's fd 1 is not a tty?!") os._exit(3) # After pty.fork(), the child should already be a session leader. # (on those systems that have that concept.) debug("In child, calling os.setsid()") try: os.setsid() except OSError: # Good, we already were session leader debug("Good: OSError was raised.") pass except AttributeError: # Have pty, but not setsid()? debug("No setsid() available?") pass except: # We don't want this error to propagate, escaping the call to # os._exit() and causing very peculiar behavior in the calling # regrtest.py ! # Note: could add traceback printing here. debug("An unexpected error was raised.") os._exit(1) else: debug("os.setsid() succeeded! (bad!)") os._exit(2) os._exit(4) else: debug("Waiting for child (%d) to finish." % pid) # In verbose mode, we have to consume the debug output from the # child or the child will block, causing this test to hang in the # parent's waitpid() call. The child blocks after a # platform-dependent amount of data is written to its fd. On # Linux 2.6, it's 4000 bytes and the child won't block, but on OS # X even the small writes in the child above will block it. Also # on Linux, the read() will raise an OSError (input/output error) # when it tries to read past the end of the buffer but the child's # already exited, so catch and discard those exceptions. It's not # worth checking for EIO. while True: try: data = os.read(master_fd, 80) except OSError: break if not data: break sys.stdout.write(str(data.replace(b'\r\n', b'\n'), encoding='ascii')) ##line = os.read(master_fd, 80) ##lines = line.replace('\r\n', '\n').split('\n') ##if False and lines != ['In child, calling os.setsid()', ## 'Good: OSError was raised.', '']: ## raise TestFailed("Unexpected output from child: %r" % line) (pid, status) = os.waitpid(pid, 0) res = os.waitstatus_to_exitcode(status) debug("Child (%d) exited with code %d (status %d)." % (pid, res, status)) if res == 1: self.fail("Child raised an unexpected exception in os.setsid()") elif res == 2: self.fail("pty.fork() failed to make child a session leader.") elif res == 3: self.fail("Child spawned by pty.fork() did not have a tty as stdout") elif res != 4: self.fail("pty.fork() failed for unknown reasons.") ##debug("Reading from master_fd now that the child has exited") ##try: ## s1 = os.read(master_fd, 1024) ##except OSError: ## pass ##else: ## raise TestFailed("Read from master_fd did not raise exception") os.close(master_fd) # pty.fork() passed. class SmallPtyTests(unittest.TestCase): """These tests don't spawn children or hang.""" def setUp(self): self.orig_stdin_fileno = pty.STDIN_FILENO self.orig_stdout_fileno = pty.STDOUT_FILENO self.orig_pty_select = pty.select self.fds = [] # A list of file descriptors to close. self.files = [] self.select_rfds_lengths = [] self.select_rfds_results = [] def tearDown(self): pty.STDIN_FILENO = self.orig_stdin_fileno pty.STDOUT_FILENO = self.orig_stdout_fileno pty.select = self.orig_pty_select for file in self.files: try: file.close() except OSError: pass for fd in self.fds: try: os.close(fd) except OSError: pass def _pipe(self): pipe_fds = os.pipe() self.fds.extend(pipe_fds) return pipe_fds def _socketpair(self): socketpair = socket.socketpair() self.files.extend(socketpair) return socketpair def _mock_select(self, rfds, wfds, xfds): # This will raise IndexError when no more expected calls exist. self.assertEqual(self.select_rfds_lengths.pop(0), len(rfds)) return self.select_rfds_results.pop(0), [], [] def test__copy_to_each(self): """Test the normal data case on both master_fd and stdin.""" read_from_stdout_fd, mock_stdout_fd = self._pipe() pty.STDOUT_FILENO = mock_stdout_fd mock_stdin_fd, write_to_stdin_fd = self._pipe() pty.STDIN_FILENO = mock_stdin_fd socketpair = self._socketpair() masters = [s.fileno() for s in socketpair] # Feed data. Smaller than PIPEBUF. These writes will not block. os.write(masters[1], b'from master') os.write(write_to_stdin_fd, b'from stdin') # Expect two select calls, the last one will cause IndexError pty.select = self._mock_select self.select_rfds_lengths.append(2) self.select_rfds_results.append([mock_stdin_fd, masters[0]]) self.select_rfds_lengths.append(2) with self.assertRaises(IndexError): pty._copy(masters[0]) # Test that the right data went to the right places. rfds = select.select([read_from_stdout_fd, masters[1]], [], [], 0)[0] self.assertEqual([read_from_stdout_fd, masters[1]], rfds) self.assertEqual(os.read(read_from_stdout_fd, 20), b'from master') self.assertEqual(os.read(masters[1], 20), b'from stdin') def test__copy_eof_on_all(self): """Test the empty read EOF case on both master_fd and stdin.""" read_from_stdout_fd, mock_stdout_fd = self._pipe() pty.STDOUT_FILENO = mock_stdout_fd mock_stdin_fd, write_to_stdin_fd = self._pipe() pty.STDIN_FILENO = mock_stdin_fd socketpair = self._socketpair() masters = [s.fileno() for s in socketpair] socketpair[1].close() os.close(write_to_stdin_fd) # Expect two select calls, the last one will cause IndexError pty.select = self._mock_select self.select_rfds_lengths.append(2) self.select_rfds_results.append([mock_stdin_fd, masters[0]]) # We expect that both fds were removed from the fds list as they # both encountered an EOF before the second select call. self.select_rfds_lengths.append(0) with self.assertRaises(IndexError): pty._copy(masters[0]) def tearDownModule(): reap_children() if __name__ == "__main__": unittest.main()