import unittest
import twill
import cherrypy 
import WebInterfaceSites
from twill import get_browser

## this makes assertRaises shorter
from twill.errors import *
from mechanize import BrowserStateError, LinkNotFoundError

## we do the following, for easy surfing
## e.g. use: cbx.go(your_url)
## commands api: http://twill.idyll.org/commands.html
cbx = twill.commands
CBXHOST="localhost"
CBXPORT=8080
CBX="http://"+CBXHOST+":"+str(CBXPORT)

class WebserverTests(unittest.TestCase):
	'''this class checks the webserver, using "twill"

	the tests in this class are from the browsers point of view, so not
	really unittests.
	fetch twill from: http://twill.idyll.org
	one way to manually run twill code is through the python
	interpreter commandline e.g.:

	import twill
	twill.shell.main()
	go http://localhost:8080
	find "my very special html content"
	help
	'''

	def setUp(self):
		'''configures the cherrypy server that it works nice with twill
		'''
		cherrypy.config.update({ 
					'server.logToScreen' : False,
					'autoreload.on': False,
					'server.threadPool': 1,
					'server.environment': 'production',
					})
		cherrypy.root = WebInterfaceSites.WebInterfaceSites()
		cherrypy.server.start(initOnly=True, serverClass=None)

		from cherrypy._cpwsgi import wsgiApp 
		twill.add_wsgi_intercept(CBXHOST, CBXPORT, lambda: wsgiApp) 

		# grab the output of twill commands
		self.output = open("/tmp/twill.log","a")
		twill.set_output(self.output)


	def tearDown(self):
		'''clean up the room when leaving'''
		# remove intercept.
		twill.remove_wsgi_intercept(CBXHOST, CBXPORT)
		# shut down the cherrypy server.
		cherrypy.server.stop()
		self.output.close()


	########################################
	######## the tests start here ##########

	def test_is_server_running(self):
		'''the server should run under given name and port'''
		cbx.go(CBX)
		# wrong port should fail
		self.assertRaises(BrowserStateError, cbx.go, "http://"+CBXHOST+":"+str(CBXPORT+1))
		# wrong hostname too
		self.assertRaises(BrowserStateError, cbx.go, "http://localhorst:"+str(CBXPORT))

	def test_helppages(self):
		'''helpsites should be availbale in different languages'''
		cbx.go(CBX)
		cbx.go("doc")
		cbx.find("Table of Contents")

		cbx.go("doc?weblang=en")
		cbx.find("Table of Contents")
		cbx.find("Getting started")
		self.assertRaises(TwillAssertionError, cbx.notfind, "Table of Contents")

		cbx.go("doc?weblang=de")
		cbx.find("Table of Contents")
		cbx.find("Wie geht es los")

		cbx.go("doc?weblang=si")
		#TODO: if weblang=si no help is displayed at all
		self.assertRaises(TwillAssertionError, cbx.notfind, "Table of Contents")

	def test_goto_status(self):
		cbx.go(CBX)
		cbx.go("status")
		cbx.find("Status")

	def test_goto_system(self):
		cbx.go(CBX)
		cbx.go("system")
		cbx.find("System")
		cbx.notfind("Sstem")
		self.assertRaises(TwillAssertionError, cbx.find, "Sstem")
		self.assertRaises(TwillAssertionError, cbx.notfind, "System")

if __name__ == "__main__":
	unittest.main()