| 0,0 → 1,95 |
|---|
| #!/usr/bin/python |
| # |
| # bg_test: tests the bg command |
| # |
| # Test the stop command for stopping a process by its pid. |
| # Requires the following commands to be implemented |
| # or otherwise usable: |
| # |
| # bg, sleep, stop |
| # |
| |
| |
| import sys, imp, atexit |
| sys.path.append("/home/courses/cs3214/software/pexpect-dpty/"); |
| import pexpect, shellio, signal, time, os, re, proc_check |
| |
| #Ensure the shell process is terminated |
| def force_shell_termination(shell_process): |
| c.close(force=True) |
| |
| #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 |
| |
| #spawn an instance of the shell |
| c = pexpect.spawn(def_module.shell, drainpty=True, logfile=logfile) |
| atexit.register(force_shell_termination, shell_process=c) |
| |
| # set timeout for all following 'expect*' calls to 2 seconds |
| c.timeout = 2 |
| |
| # ensure that shell prints expected prompt |
| assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt" |
| |
| |
| |
| # run program sleep |
| c.sendline("sleep 30 &") |
| |
| #Used to get the jobid and pid of the sleep process |
| (jobid, pid) = shellio.parse_regular_expression(c, def_module.bgjob_regex) |
| |
| # ensure that shell prints expected prompt |
| assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt" |
| |
| |
| |
| # send the stop command to the process |
| c.sendline(def_module.builtin_commands['stop'] % jobid) |
| |
| #Ensure that sleep has enough time to stop before we read its |
| #/proc/ /stat file. |
| time.sleep(.5) |
| |
| |
| |
| #Ensure that sleep is now stopped in the background, and is not |
| #the foreground process. |
| assert not proc_check.check_pid_fgpgrp(pid), \ |
| 'Error: process is in the foreground' |
| assert proc_check.check_pid_status(pid, 'T'), 'Error: process not stopped' |
| |
| #check the prompt prints |
| assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt" |
| |
| |
| |
| #resume the sleep program |
| c.sendline(def_module.builtin_commands['bg'] % jobid) |
| |
| #check the prompt prints |
| assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt" |
| |
| #Ensure that sleep has enough time to start before we read its |
| #/proc/ /stat file. |
| time.sleep(.5) |
| |
| |
| |
| #Ensure that sleep is running now in the background, and is not |
| #the foreground process. |
| assert not proc_check.check_pid_fgpgrp(pid), \ |
| 'Error: process is in the foreground' |
| assert proc_check.check_pid_status(pid, 'S'), 'Error: process not running' |
| |
| |
| |
| #exit |
| c.sendline("exit"); |
| assert c.expect("exit\r\n") == 0, "Shell output extraneous characters" |
| |
| shellio.success() |