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- import pty, os, sys, string
- from test_support import verbose, TestFailed, TestSkipped
-
- TEST_STRING_1 = "I wish to buy a fish license."
- TEST_STRING_2 = "For my pet fish, Eric."
- TEST_STRING_3 = "And now for something completely different..."
- TEST_STRING_4 = "but you pronounce it throatwobbler mangrove."
-
- if verbose:
- def debug(msg):
- print msg
- else:
- def debug(msg):
- pass
-
- # Marginal testing of pty suite. Cannot do extensive 'do or fail' testing
- # because pty code is not too portable.
-
- 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(%s)"%`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 TestSkipped, "Pseudo-terminals (seemingly) not functional."
-
- if not os.isatty(slave_fd):
- raise TestFailed, "slave_fd is not a tty"
-
- debug("Writing to slave_fd")
- os.write(slave_fd, TEST_STRING_1) # should check return value
- print os.read(master_fd, 1024)
-
- os.write(slave_fd, TEST_STRING_2[:5])
- os.write(slave_fd, TEST_STRING_2[5:])
- print os.read(master_fd, 1024)
-
- os.close(slave_fd)
- os.close(master_fd)
-
- # basic pty passed.
-
- debug("calling pty.fork()")
- pid, master_fd = pty.fork()
- if pid == pty.CHILD:
- ## # Please uncomment these when os.isatty() is added.
- ## if not os.isatty(1):
- ## debug("Child's fd 1 is not a tty?!")
- ## os._exit(3)
- try:
- debug("In child, calling os.setsid()")
- os.setsid()
- except OSError:
- # Good, we already were session leader
- debug("OSError was raised.")
- pass
- except AttributeError:
- # Have pty, but not setsid() ?
- debug("AttributeError was raised.")
- pass
- except:
- # We don't want this error to propagate, escape the call to
- # os._exit(), and cause very peculiar behavior in the calling
- # regrtest.py !
- debug("Some other 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)
- (pid, status) = os.waitpid(pid, 0)
- debug("Child (%d) exited with status %d."%(pid, status))
- if status / 256 == 1:
- raise TestFailed, "Child raised an unexpected exception in os.setsid()"
- elif status / 256 == 2:
- raise TestFailed, "pty.fork() failed to make child a session leader."
- elif status / 256 == 3:
- raise TestFailed, "Child spawned by pty.fork() did not have a tty as stdout"
- elif status / 256 <> 4:
- raise TestFailed, "pty.fork() failed for unknown reasons:"
- print os.read(master_fd, 65536)
-
- os.close(master_fd)
-
- # pty.fork() passed.
-
-