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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.
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