#!/usr/bin/python
#
# echo_test: tests the echo command. Expects following format:
#
# echo arg1 arg2 arg3 ... argn
#
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.timeout = 2

# test output
c. sendline("echo Hello World!")
assert c.expect("Hello World!") == 0, "Assert failed, expected 'Hello World!'"

# test output
c. sendline("echo")
assert c.expect("") == 0, "Assert failed, expected ''"

# test output
c. sendline("echo this is a longer test for the echo command")
assert c.expect("Hello World!") == 0, "Assert failed, expected 'this is a longer test for the echo command'"

c.sendline("exit");

# exit on success
shellio.success()