#!/usr/bin/python
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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 expessions 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


##spaw 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
c.timeout = 5


#Tests go below
c.sendline("average 1 2 3");
assert c.expect_exact("The average is: 2.000000") == 0, "Incorrect average computed"

c.sendline("average 1 2");
assert c.expect_exact("The average is: 1.500000") == 0, "Incorrect output"

c.sendline("average");
assert c.expect_exact("Error: must provide numbers for an average") == 0, "case not handled correctly"

c.sendline("average three");
assert c.expect_exact("three is not a legitimate number") == 0, "case no handled correctly"

c.sendline("average 9999999999")
assert c.expect_exact("9999999999 is either too large or too small to be converted into an int") == 0, "case not handled correctly"


c.sendline("exit");


shellio.success()