#!/usr/bin/python
#
# Tests the functionality of the 'heart' esh plugin
# Written for CS 3214 Spring 2015
#
# @author Ian VanBuren, Phuong Le
#




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. Build expected output
#
#
expectedoutput = ",d88b.d88b,\n" +
    "88888888888\n" + 
    "`Y8888888Y'\n" +
    "  `Y888Y'  \n" +
    "    `Y' \n"

#################################################################
# Step 2. Testing heart
#
# run heart
c.sendline("heart");

assert c.expect_exact(expectedoutput) == 0, \
    "expected heart output %s" % (expectedoutput)