#!/usr/bin/python
#
# lua_test: tests the functionality implemented by Lua plug-ins.
# 
# Tests executing the sample plugin `hellolua`. Upon running the command, the 
# plugin should output a message indicating that the Lua environment has been
# created properly and that Lua can print to the Shell. If the message is output
# to the shell, this indicates that plug-in initialization was also successful.
# Finally, arguments are parsed and output to the console, if provided, for the
# `hellolua` plug-in.
#
#
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)
plugin_module = imp.load_source('', './plugins/group454_lua_eshoutput.py')
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

# run the `hellolua` Lua command
c.sendline("hellolua")

# hellolua should output "Hello, Lua!"
assert c.expect_exact(plugin_module.hellolua_msg) == 0, "Shell did not output the result from the `hellolua` command"

# send additional arguments to `hellolua` 
c.sendline("hellolua a b c")

# hellolua should output "a, b, c" on the final line of output
assert c.expect(plugin_module.hellolua_args) == 0, "Shell didn't output the arguments sent to the `hellolua` command"

shellio.success()