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'''Hooks for lettuce to run a test pylons app'''

from lettuce import *
from paste.fixture import TestApp

import pylons.test

from paste.deploy.loadwsgi import loadapp
from paste.script.appinstall import SetupCommand

from routes.util import URLGenerator

from os import getcwd

@before.each_scenario
def start_test_server(scenario):
    '''Start a test instance of the app

    Adds the following to world:
    - app: The WSGI application defined in test.ini
    - url: A routes url generator for the app
    '''

    if not hasattr(world, 'app'):
        if not pylons.test.pylonsapp:
            # setup-app looks here for an app before loading it, we need to
            # use the same app otherwise we won't be using the same in
            # memory database
            pylons.test.pylonsapp = loadapp('config:test.ini', relative_to=getcwd(), global_conf={})
        SetupCommand('setup-app').run([pylons.test.pylonsapp.config['__file__']])
        config = pylons.test.pylonsapp.config
        world.app = TestApp(pylons.test.pylonsapp)
        world.url = URLGenerator(config['routes.map'], {})

@after.each_scenario
def stop_test_server(scenario):
    if hasattr(world, 'app'):
        if pylons.test.pylonsapp == world.app:
            pylons.test.pylonsapp = None
        del world.app
        del world.url
    if hasattr(world, 'response'):
        del world.response