0,0 → 1,88 |
#!/usr/bin/python |
# |
# Ctrl-Z Test: Start a shell, run a program, |
# send SIGTSTP, wait for status msg, move in |
# foreground, then send SIGINT, then exit |
# |
# Requires use of the following commands: |
# |
# ctrl-z control, fg, sleep |
# |
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import sys, imp, atexit |
sys.path.append("/home/courses/cs3214/software/pexpect-dpty/"); |
import pexpect, proc_check, shellio, signal, time, threading |
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#Ensure the shell process is terminated |
def force_shell_termination(shell_process): |
c.close(force=True) |
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# pulling in the regular expression and other definitions |
definitions_scriptname = sys.argv[1] |
def_module = imp.load_source('', definitions_scriptname) |
logfile = None |
if hasattr(def_module, 'logfile'): |
logfile = def_module.logfile |
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# spawn an instance of the shell |
c = pexpect.spawn(def_module.shell, drainpty=True, logfile=logfile) |
atexit.register(force_shell_termination, shell_process=c) |
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# set timeout for all following 'expect*' calls to 2 seconds |
c.timeout = 2 |
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# ensure that shell prints expected prompt |
assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt" |
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# run a command |
c.sendline("sleep 60") |
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# The following call is necessary to ensure that the SIGTSTP |
# we are sending below via 'sendcontrol' reaches the 'sleep' child. |
proc_check.wait_until_child_is_in_foreground(c) |
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#checks the number of active child processes |
#using a timeout based process count |
proc_check.count_children_timeout(c, 1, 1) |
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#checks the number of active child processes |
#at this moment in time |
proc_check.count_active_children(c, 1) |
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# send SIGTSTP to 'sleep' |
c.sendcontrol('z') |
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# shell should pick up that 'sleep' was stopped and respond with job status |
# it should output a line such as [6]+ Stopped (sleep 60) |
# (note that the provided regexp assumes the job name appears in parentheses, |
# adjust your eshoutput.py if needed) |
(jobid, statusmsg, cmdline) = \ |
shellio.parse_regular_expression(c, def_module.job_status_regex) |
assert statusmsg == def_module.jobs_status_msg['stopped'], "Shell did not report stopped job" |
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# move job into foreground |
c.sendline(def_module.builtin_commands['fg'] % jobid) |
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# when moving a job in the foreground, bash outputs its command line |
assert c.expect_exact(cmdline) == 0, "Shell did not report the job moved into the foreground" |
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# send SIGINT |
c.sendintr() |
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#check that the prompt prints |
assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt" |
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#exit |
c.sendline("exit") |
assert c.expect_exact("exit\r\n") == 0, "Shell output extraneous characters" |
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shellio.success() |