#!/usr/bin/python
#
# Tests the functionality of the ascii_cat plugin
#
# To run this test on your own shell, simply run:
#
# /web/courses/cs3214/spring2015/projects/student-plugins//mzamani1_jamied93/ascii_cat 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
# 'ascii_cat.so' file is located within the same directory.
#
# @author Michael Zamani (mzamani1)
# @author Jamie Dalrymple (jamied93)
#
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 5 seconds
c.timeout = 5

#############################################################################
# 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. Compare output out ascii_cat to expected output.
# 
#

expectedoutput_stretch = "\n            _,'|             _.-''``-...___..--';)"
expectedoutput_puma = "                                                          _...---.._"
expectedoutput_empty = "\nCat ascii_art available: strech, puma"
expectedoutput_wrong = "\nNo cat ascii art exists with the provided name."

c.sendline("ascii_cat")
assert c.expect(expectedoutput_empty) == 0, "ascii_cat produces incorrect output"

c.sendline("ascii_cat house")
assert c.expect_exact(expectedoutput_wrong) == 0, "ascii_cat house produces incorrect output"

c.sendline("ascii_cat stretch")
assert c.expect_exact(expectedoutput_stretch) == 0, "ascii_cat stretch produces incorrect output"

c.sendline("ascii_cat puma")
assert c.expect_exact(expectedoutput_puma) == 0, "ascii_cat puma produces incorrect output"

shellio.success()