#!/usr/bin/python
#
# Block header comment
#
#
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]
plugin_dir = sys.argv[2]
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 + plugin_dir, drainpty=True, logfile=logfile)

atexit.register(force_shell_termination, shell_process=c)

#set timeout to be 2
c.timeout = 2

#call command and expect output
c.sendline("setenv TEST test");

assert c.expect("TEST=test\r\n") == 0, "Shell did not print expected prompt"

#check to see if system vairable was created/changed
c.sendline("printenv TEST");

assert c.expect("test\r\n") == 0, "Shell did not print expected prompt"

#exti shell
c.sendline("exit");

assert c.expect_exact("exit\r\n") == 0, "Shell outputs extraneous characters";

shellio.success()