#!/usr/bin/python
# Calculates a fibonacci number
#
# Requires that fibonacci be functional to pass
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]
plugin_dir = sys.argv[2]
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 + plugin_dir, drainpty=True, logfile=logfile)

atexit.register(force_shell_termination, shell_process=c)

c.sendline("fibonacci 5")
assert c.expect("Fibonacci number 5: 8") == 0, "Expected result 8"

c.sendline("fibonacci 0")
assert c.expect("Fibonacci number 0: 1") == 0, "Expected result 1"

c.sendline("fibonacci 1")
assert c.expect("Fibonacci number 1: 1") == 0, "Expected result 1"

shellio.success()