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