#!usr/bin/python
#
# Magic8 test: Tests the Magic8 builtin plugin
#
# Tests valid inputs: questions input by users
# Tests invalid inputs: nothing input, input is not form of question
#

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 expression and other definitions
definitions_scriptname = sys.argv[1]
def_module = imp.load_source('', definitions_scriptname)
logfile = None
if hasattr(def_module, 'logfile'):
    logfile = def_module.logfile

# spawn an instance of the shell
c = pexpect.spawn(def_module.shell, drainpty=True, logfile=logfile, args=['-p', 'plugins/'])
atexit.register(force_shell_termination, shell_process=c)

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

# Test square with no question
c.sendline("square")
assert c.expect_exact("You must enter a value to square!") == 0, "Correct response not shown"

# Test square with number
c.sendline("square 4");
assert c.expect_exact("16") == 0, "Wrong value returned"

# End the shell program by sending it an end-of-file character
c.sendline("exit");

# Ensure that no extra characters are output after exiting
assert c.expect_exact("exit\r\n") == 0, "Shell output extraneous characters"

# The test was successful
shellio.success();