#!/usr/bin/python
#
# Samyak Singh (ssing94)
# Michael Louie (louiem)
#
# history_test: tests the history plugin.
# 
# Test the history plugin for recording, displaying, and
# clearing user commands in history.
# Does not require any additional commands to be implemented
# or otherwise unsable.
#

# SETUP
####################################################################################
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)

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

# TEST
####################################################################################

# test "history"
c.sendline("history")
assert c.expect("No history") == 0, "Test failed: History supposed to initialized empty!"

# enter a user command.
c.sendline("ls")

# test "history";
# expecting ls entry.
c.sendline("history")
assert c.expect("1\tls") == 0, "Test failed: History supposed to have one entry (ls)."

# enter a few user command with switches and built-ins.
c.sendline("pwd")
c.sendline("ls -al")
c.sendline("echo hello world")
c.sendline("cd .")
c.sendline("jobs")
c.sendline("fg")
c.sendline("bg")
c.sendline("kill")
c.sendline("stop")
c.sendline("")
c.sendline("")

# test "history";
# expecting lots of entries.
c.sendline("history")
assert c.expect("stop") == 0, "Test failed: History supposed to have a bunch of commands!"

c.sendline("history -c")
assert c.expect("History cleared.") == 0, "Test failed: History did not clear history entries."

shellio.success()