#!/usr/bin/python
#
# Tests the functionality of gback's glob module
#
# This functions as a template for your own tests.
#
# Written for CS 3214 Spring 2015.
#
# To run this test on your own shell, simply run:
#
# /web/courses/cs3214/spring2015/projects/student-plugins/gback/glob/gback_glob_test.py eshoutput.py
#
# from the directory in which your "esh" and your "eshoutput.py" is located.
# It should also be possible to make a copy of that file anywhere, as long as the
# 'glob.so' file is located within the same directory.
#
# @author gback
#
import sys, imp, atexit, os
sys.path.append("/home/courses/cs3214/software/pexpect-dpty/");
import pexpect, shellio, signal, time, os, re, proc_check

# Determine the path this file is in
thisdir = os.path.dirname(os.path.realpath(__file__))

#Ensure the shell process is terminated
def force_shell_termination(shell_process):
	c.close(force=True)

# pulling in the regular expression and other definitions
# this should be the eshoutput.py file of the hosting shell, see usage above
definitions_scriptname = sys.argv[1]
def_module = imp.load_source('', definitions_scriptname)

# you can define logfile=open("log.txt", "w") in your eshoutput.py if you want logging!
logfile = None
if hasattr(def_module, 'logfile'):
    logfile = def_module.logfile

#spawn an instance of the shell, note the -p flags
c = pexpect.spawn(def_module.shell,  drainpty=True, logfile=logfile, args=['-p', thisdir])

atexit.register(force_shell_termination, shell_process=c)

# set timeout for all following 'expect*' calls to 2 seconds
c.timeout = 2

# type in convert without a number afterwards
c.sendline("f2k")

# make sure that if there is no number that the default 
# number would be 32 degree Fahrenheit and convert it to 273 Kelvins
assert c.expect_exact("32 degrees Fahrenheit converts to 273 Kelvins") == 0, "Shell did not print correct prompt"

# send convert then 48 and it should print out the conversion of 48 degree F
# to 281 Kelvins 
c.sendline("f2k 48")

assert c.expect_exact("48 degrees Fahrenheit converts to 281 Kelvins") == 0, "Shell did not print correct prompt"

# exit
c.sendline("exit")

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

shellio.success()