#!/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:
#
# ~/cs3214/public_html/spring2015/projects/student-plugins/canadian/cowsay/canadian_cowsay_test.py eshoutput.py
#
# Execute the test from the directory in which your "esh" and your "eshoutput.py" is located.
# 
# It should also be possible to make a copy of the test file anywhere, as long as the
# 'canadian_cowsay.so' file is located within the same directory.
#
# @author gback
# @author canadian   
#
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 

#############################################################################
# Now the real test starts!
#

# ensure that shell prints expected prompt
assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt (1)" 

#################################################################
# Step 1. See if default cowsay works

c.sendline("cowsay");

assert c.expect("< Moo, Eh >") == 0 , "Shell did not print default 'cowsay' correctly."

#################################################################
# Step 2. See if custom cowsay works with one args

# First check for correct prompt again
assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt (2)" 

c.sendline("cowsay Hello");

assert c.expect("< Hello >") == 0 , "Shell did not print 1 arg 'cowsay' correctly."

################################################################
# Step 3. See if cowsay works correctly with multiple args

#First check for correct prompt again
assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt (3)" 

c.sendline("cowsay mortal, welcome to my realm");

assert c.expect("< mortal, welcome to my realm >") == 0 , "Shell did not print multi-arg 'cowsay' correctly."

#And finally check for prompt again
assert c.expect(def_module.prompt) == 0, "Shell did not print expected prompt (End)"

shellio.success()