testERP5WebWithDms.py 29.2 KB
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# -*- coding: utf-8 -*-
##############################################################################
#
# Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
#          Romain Courteaud <romain@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################

import unittest
import os
import transaction
from lxml import etree

from AccessControl import Unauthorized
from AccessControl.SecurityManagement import newSecurityManager
from Testing import ZopeTestCase
from Products.ERP5Type.tests.ERP5TypeTestCase import ERP5TypeTestCase,\
     _getConversionServerDict
from Products.ERP5Type.tests.utils import FileUpload

LANGUAGE_LIST = ('en', 'fr', 'de', 'bg',)

def makeFilePath(name):
  return os.path.join(os.path.dirname(__file__), 'test_data', name)

def makeFileUpload(name, as_name=None):
  if as_name is None:
    as_name = name
  path = makeFilePath(name)
  return FileUpload(path, as_name)

class TestERP5WebWithDms(ERP5TypeTestCase, ZopeTestCase.Functional):
  """Test for erp5_web business template.
  """
  run_all_test = 1
  quiet = 0
  manager_username = 'zope'
  manager_password = 'zope'
  website_id = 'test'


  def getTitle(self):
    return "ERP5WebWithDms"

  def login(self, quiet=0, run=run_all_test):
    uf = self.getPortal().acl_users
    uf._doAddUser(self.manager_username, self.manager_password, ['Manager'], [])
    user = uf.getUserById(self.manager_username).__of__(uf)
    newSecurityManager(None, user)

  def getBusinessTemplateList(self):
    """
    Return the list of required business templates.
    """
    return ('erp5_base',
            'erp5_web',
            'erp5_ingestion',
            'erp5_ingestion_mysql_innodb_catalog',
            'erp5_dms',
            )

  def afterSetUp(self):
    self.login()
    portal = self.getPortal()
    self.setDefaultSitePreference()
    self.web_page_module = self.portal.web_page_module
    self.web_site_module = self.portal.web_site_module
    self.portal_id = self.portal.getId()

  def setDefaultSitePreference(self):
    default_pref = self.portal.portal_preferences.default_site_preference
    conversion_dict = _getConversionServerDict()
    default_pref.setPreferredOoodocServerAddress(conversion_dict['hostname'])
    default_pref.setPreferredOoodocServerPortNumber(conversion_dict['port'])
    if self.portal.portal_workflow.isTransitionPossible(default_pref, 'enable'):
      default_pref.enable()
    return default_pref

  def clearModule(self, module):
    module.manage_delObjects(list(module.objectIds()))
    transaction.commit()
    self.tic()

  def beforeTearDown(self):
    self.clearModule(self.portal.web_site_module)
    self.clearModule(self.portal.web_page_module)

  def setupWebSite(self, **kw):
    """
      Setup Web Site
    """
    portal = self.getPortal()
    request = self.app.REQUEST

    # add supported languages for Localizer
    localizer = portal.Localizer
    for language in LANGUAGE_LIST:
      localizer.manage_addLanguage(language = language)

    # create website
    if hasattr(self.web_site_module, self.website_id):
      self.web_site_module.manage_delObjects(self.website_id)
    website = self.getPortal().web_site_module.newContent(portal_type = 'Web Site',
                                                          id = self.website_id,
                                                          **kw)
    website.publish()
    transaction.commit()
    self.tic()
    return website

  def setupWebSection(self, **kw):
    """
      Setup Web Section
    """
    web_site_module = self.portal.getDefaultModule('Web Site')
    website = web_site_module[self.website_id]
    websection = website.newContent(portal_type='Web Section', **kw)
    self.websection = websection
    kw = dict(criterion_property_list = 'portal_type',
              membership_criterion_base_category_list='',
              membership_criterion_category_list='')
    websection.edit(**kw)
    websection.setCriterion(property='portal_type',
                            identity=['Web Page'],
                            max='',
                            min='')

    transaction.commit()
    self.tic()
    return websection


  def setupWebSitePages(self, prefix, suffix=None, version='0.1',
                        language_list=LANGUAGE_LIST, **kw):
    """
      Setup some Web Pages.
    """
    webpage_list = []
    portal = self.getPortal()
    request = self.app.REQUEST
    web_site_module = self.portal.getDefaultModule('Web Site')
    website = web_site_module[self.website_id]

    # create sample web pages
    for language in language_list:
      if suffix is not None:
        reference = '%s-%s' % (prefix, language)
      else:
        reference = prefix
      webpage = self.web_page_module.newContent(portal_type='Web Page',
                                                reference=reference,
                                                version=version,
                                                language=language,
                                                **kw)
      webpage.publish()
      transaction.commit()
      self.tic()
      self.assertEquals(language, webpage.getLanguage())
      self.assertEquals(reference, webpage.getReference())
      self.assertEquals(version, webpage.getVersion())
      self.assertEquals('published', webpage.getValidationState())
      webpage_list.append(webpage)

    return webpage_list

  def test_01_WebPageVersioning(self, quiet=quiet, run=run_all_test):
    """
      Simple Case of showing the proper most recent public Web Page based on
      (language, version)
    """
    if not run: return
    if not quiet:
      message = '\ntest_01_WebPageVersioning'
      ZopeTestCase._print(message)
    portal = self.getPortal()
    request = self.app.REQUEST
    website = self.setupWebSite()
    websection = self.setupWebSection()
    page_reference = 'default-webpage-versionning'
    webpage_list  = self.setupWebSitePages(prefix = page_reference)

    # set default web page for section
    found_by_reference = portal.portal_catalog(reference = page_reference,
                                               language = 'en',
                                               portal_type = 'Web Page')
    en_01 =  found_by_reference[0].getObject()
    # set it as default web page for section
    websection.edit(categories_list = ['aggregate/%s' %en_01.getRelativeUrl(),])
    self.assertEqual([en_01.getReference(),],
                      websection.getAggregateReferenceList())

    # create manually a copy of 'en_01' with higher version and check that
    # older version is archived and new one is show as default web page for section
    en_02 = self.web_page_module.newContent(portal_type = 'Web Page',
                                            reference = page_reference,
                                            version = 0.2,
                                            language = 'en')
    en_02.publish()
    en_02.reindexObject()
    transaction.commit()
    self.tic()

    # is old archived?
    self.assertEquals('archived', en_01.getValidationState())

    # is new public and default web page for section?
    portal.Localizer.manage_changeDefaultLang(language = 'en')
    default_document = websection.getDefaultDocumentValue()
    self.assertEquals(en_02, default_document)
    self.assertEquals('en', default_document.getLanguage())
    self.assertEquals('0.2', default_document.getVersion())
    self.assertEquals('published', default_document.getValidationState())

  def test_02_WebSectionAuthorizationForced(self, quiet=quiet, run=run_all_test):
    """ Check that when a document is requested within a Web Section we have a chance to
        require user to login.
        Whether or not an user will login is controlled by a property on Web Section (authorization_forced).
    """
    if not run: return
    if not quiet:
      message = '\ntest_02_WebSectionAuthorizationForced'
      ZopeTestCase._print(message)
    request = self.app.REQUEST
    website = self.setupWebSite()
    websection = self.setupWebSection()
    webpage_list  = self.setupWebSitePages(prefix = 'test-web-page')
    webpage = webpage_list[0]
    document_reference = 'default-document-reference'
    document = self.portal.web_page_module.newContent(
                                      portal_type = 'Web Page',
                                      reference = document_reference)
    document.release()
    website.setAuthorizationForced(0)
    websection.setAuthorizationForced(0)
    transaction.commit()
    self.tic()

    # make sure that _getExtensibleContent will return the same document
    # there's not other way to test otherwise URL traversal
    self.assertEqual(document.getUid(),
                           websection._getExtensibleContent(request,  document_reference).getUid())

    # Anonymous User should have in the request header for not found when
    # viewing non available document in Web Section (with no authorization_forced)
    self.logout()
    self.assertEqual(None,  websection._getExtensibleContent(request,  document_reference))
    path = websection.absolute_url_path() + '/' + document_reference
    response = self.publish(path)
    self.assertEqual(404, response.getStatus())

    # set authorization_forced flag
    self.login()
    websection.setAuthorizationForced(1)

    # check Unauthorized exception is raised for anonymous
    # this exception is usually caught and user is redirecetd to login form
    self.logout()
    self.assertRaises(Unauthorized,  websection._getExtensibleContent,  request,  document_reference)

  def test_03_LatestContent(self, quiet=quiet, run=run_all_test):
    """ Test latest content for a Web Section. Test different use case like languaeg, workflow state.
   """
    if not run: return
    if not quiet:
      message = '\ntest_03_LatestContent'
      ZopeTestCase._print(message)
    portal = self.getPortal()
    website = self.setupWebSite()
    websection = self.setupWebSection()
    portal_categories = portal.portal_categories
    publication_section_category_id_list = ['documentation',  'administration']
    for category_id in publication_section_category_id_list:
      portal_categories.publication_section.newContent(portal_type = 'Category',
                                                                             id = category_id)
    #set predicate on web section using 'publication_section'
    websection.edit(membership_criterion_base_category = ['publication_section'],
                            membership_criterion_category=['publication_section/%s'
                                                                              %publication_section_category_id_list[0]])
    transaction.commit()
    self.tic()

    self.assertEquals(0,  len(websection.getDocumentValueList()))
    # create pages belonging to this publication_section 'documentation'
    web_page_en = portal.web_page_module.newContent(portal_type = 'Web Page',
                                                 language = 'en',
                                                 publication_section_list=publication_section_category_id_list[:1])
    web_page_en.publish()
    transaction.commit()
    self.tic()
    self.assertEquals(1,  len(websection.getDocumentValueList(language='en')))
    self.assertEquals(web_page_en,  websection.getDocumentValueList(language='en')[0].getObject())

    # create pages belonging to this publication_section 'documentation' but for 'bg' language
    web_page_bg = portal.web_page_module.newContent(portal_type = 'Web Page',
                                                 language = 'bg',
                                                 publication_section_list=publication_section_category_id_list[:1])
    web_page_bg.publish()
    transaction.commit()
    self.tic()
    self.assertEquals(1,  len(websection.getDocumentValueList(language='bg')))
    self.assertEquals(web_page_bg,  websection.getDocumentValueList(language='bg')[0].getObject())

    # reject page
    web_page_bg.reject()
    transaction.commit()
    self.tic()
    self.assertEquals(0,  len(websection.getDocumentValueList(language='bg')))

    # publish page and search without a language (by default system should return 'en' docs only)
    web_page_bg.publish()
    transaction.commit()
    self.tic()
    self.assertEquals(1,  len(websection.getDocumentValueList()))
    self.assertEquals(web_page_en,  websection.getDocumentValueList()[0].getObject())

  def test_04_WebSectionAuthorizationForcedForDefaultDocument(self, quiet=quiet, run=run_all_test):
    """ Check that when a Web Section contains a default document not accessible by user we have a chance to
        require user to login.
        Whether or not an user will login is controlled by a property on Web Section (authorization_forced).
    """
    if not run: return
    if not quiet:
      message = '\ntest_04_WebSectionAuthorizationForcedForDefaultDocument'
      ZopeTestCase._print(message)
    request = self.app.REQUEST
    website = self.setupWebSite()
    websection = self.setupWebSection()
    web_page_reference = 'default-document-reference'
    web_page_en = self.portal.web_page_module.newContent(
                                      portal_type = 'Web Page',
                                      language = 'en',
                                      reference = web_page_reference)
    # this way it's not viewable by anonymous and we can test
    web_page_en.releaseAlive()
    websection.setAggregateValue(web_page_en)
    websection.setAuthorizationForced(1)
    transaction.commit()
    self.tic()

    # make sure that getDefaultDocumentValue() will return the same document for logged in user
    # if default document is accessible
    self.assertEqual(web_page_en.getUid(),
                           websection.getDefaultDocumentValue().getUid())

    # check Unauthorized exception is raised for anonymous when authorization_forced is set
    self.logout()
    self.assertEqual(None,  websection.getDefaultDocumentValue())
    self.assertRaises(Unauthorized,  websection)

    # Anonymous User should not get Unauthorized when authorization_forced is not set
    self.login()
    websection.setAuthorizationForced(0)
    transaction.commit()
    self.tic()

    self.logout()
    self.assertEqual(None,  websection.getDefaultDocumentValue())
    try:
      websection()
    except Unauthorized:
      self.fail("Web Section should not prompt user for login.")

    self.login()
    web_page_list = []
    for iteration in range(0, 10):
      web_page =self.getPortal().web_page_module.newContent(portal_type = 'Web Page',
                                                            reference = "%s_%s" % (web_page_reference, iteration),
                                                            language = 'en',)
      web_page.publish()
      self.tic()
      transaction.commit()
      web_page_list.append(web_page)
    websection.setAggregateValueList(web_page_list)
    self.tic()
    transaction.commit()
    self.assertEqual(5, len(websection.getDocumentValueList(limit=5)))

  def test_05_deadProxyFields(self, quiet=quiet, run=run_all_test):
    """
    check that all proxy fields defined in business templates have a valid
     target
    """
    if not run: return
    if not quiet:
      message = '\ntest_05_deadProxyFields'
      ZopeTestCase._print(message)
    skins_tool = self.portal.portal_skins
    for field_path, field in skins_tool.ZopeFind(
              skins_tool, obj_metatypes=['ProxyField'], search_sub=1):
      self.assertNotEqual(None, field.getTemplateField(),
          '%s\nform_id:%s\nfield_id:%s\n' % (field_path,
                                             field.get_value('form_id'),
                                             field.get_value('field_id')))

  def test_06_Check_LastModified_Header(self):
    """Checks that Last-Modified header set by caching policy manager
    is correctly filled with getModificationDate of content.
    This test check "unauthenticated" Policy installed by erp5_web:
    """
    request = self.portal.REQUEST
    website = self.setupWebSite()
    web_section_portal_type = 'Web Section'
    web_section = website.newContent(portal_type=web_section_portal_type)

    # unauthenticated
    document_portal_type = 'Text'
    document_module = self.portal.getDefaultModule(document_portal_type)
    document = document_module.newContent(portal_type=document_portal_type,
                                          reference='NXD-Document-TEXT.Cache')
    document.publish()
    transaction.commit()
    self.tic()
    path = website.absolute_url_path() + '/NXD-Document-TEXT.Cache'
    response = self.publish(path)
    last_modified_header = response.getHeader('Last-Modified')
    self.assertTrue(last_modified_header)
    from App.Common import rfc1123_date
    # Convert the Date into string according RFC 1123 Time Format
    modification_date = rfc1123_date(document.getModificationDate())
    self.assertEqual(modification_date, last_modified_header)

    # Upload a presentation with 3 pages.
    upload_file = makeFileUpload('P-DMS-Presentation.3.Pages-001-en.odp')
    document = document_module.newContent(portal_type='Presentation',
                                          file=upload_file)
    reference = 'P-DMS-Presentation.3.Pages'
    document.edit(reference=reference)
    document.publish()
    transaction.commit()
    self.tic()
    website_url = website.absolute_url_path()
    # Check we can access to the 3 drawings converted into images.
    # Those images can be accessible through extensible content
    # url : path-of-document + '/' + 'img' + page-index + '.png'
    for i in range(3):
      path = '/'.join((website_url,
                       reference,
                       'img%s.png' % i))
      response = self.publish(path)
      policy_list = self.portal.caching_policy_manager.listPolicies()
      policy = [policy for policy in policy_list\
                                          if policy[0] == 'unauthenticated'][0]
      self.assertEquals(response.getHeader('Content-Type'), 'image/png')
      self.assertEquals(response.getHeader('Cache-Control'),
                        'max-age=%s' % policy[1].getMaxAgeSecs())

  def test_07_TestDocumentViewBehaviour(self):
    """All Documents shared the same downloading behaviour
    The rules are.
      a document is allways returned in its web_site envrironment
      except if conversion parameters are passed like format, display, ...

    All links to an image must be write with a parameter in its url
    ../REFERENCE.TO.IMAGE?format=png or ../REFERENCE.TO.IMAGE?display=small
    """
    portal = self.getPortal()
    request = portal.REQUEST
    request['PARENTS'] = [self.app]
    website = self.setupWebSite()
    web_section_portal_type = 'Web Section'
    web_section = website.newContent(portal_type=web_section_portal_type)

    web_page_reference = 'NXD-WEB-PAGE'
    content = '<p>initial text</p>'
    web_page_module = portal.getDefaultModule(portal_type='Web Page')
    web_page = web_page_module.newContent(portal_type='Web Page',
                                          reference=web_page_reference,
                                          text_content=content)
    web_page.publish()

    document_reference = 'NXD-Presentation'
    document_module = portal.getDefaultModule(portal_type='Presentation')
    upload_file = makeFileUpload('P-DMS-Presentation.3.Pages-001-en.odp')
    document = document_module.newContent(portal_type='Presentation',
                                          reference=document_reference,
                                          file=upload_file)
    document.publish()

    image_reference = 'NXD-IMAGE'
    image_module = portal.getDefaultModule(portal_type='Image')
    upload_file = makeFileUpload('tiolive-ERP5.Freedom.TioLive.Logo-001-en.png')
    image = image_module.newContent(portal_type='Image',
                                    file=upload_file,
                                    reference=image_reference)
    image.publish()
    transaction.commit()
    self.tic()
    credential = 'ERP5TypeTestCase:'
    # testing TextDocument
    response = self.publish(website.absolute_url_path() + '/' +\
                            web_page_reference, credential)
    self.assertEquals(response.getHeader('content-type'),
                                         'text/html; charset=utf-8')
    self.assertTrue('<form' in response.getBody()) # means the web_page
                                      # is rendered in web_site context

    response = self.publish(website.absolute_url_path() + '/' +\
                            web_page_reference + '/view', credential)
    self.assertEquals(response.getHeader('content-type'),
                                         'text/html; charset=utf-8')
    self.assertTrue('<form' in response.getBody()) # means the web_page
                                      # is rendered in web_site context

    response = self.publish(website.absolute_url_path() + '/' +\
                            web_page_reference + '?format=pdf', credential)
    self.assertEquals(response.getHeader('content-type'), 'application/pdf')

    # testing Image
    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference, credential)
    # image is rendered in web_site context
    self.assertEquals(response.getHeader('content-type'),
                                         'text/html; charset=utf-8')

    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference + '?format=png', credential)
    # image is downloaded because format parameter is passed
    self.assertEquals(response.getHeader('content-type'), 'image/png')

    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference + '?display=small', credential)
    # image is downloaded because display parameter is passed
    self.assertEquals(response.getHeader('content-type'), 'image/png')

    # image is rendered in web_site context
    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference+ '/view', credential)
    self.assertEquals(response.getHeader('content-type'),
                                         'text/html; charset=utf-8')

    # testing OOoDocument
    # Document is downloaded
    response = self.publish(website.absolute_url_path() + '/' +\
                            document_reference, credential)
    self.assertEquals(response.getHeader('content-type'),
                                         'text/html; charset=utf-8')
    response = self.publish(website.absolute_url_path() + '/' +\
                            document_reference + '?format=odp', credential)
    # document is resturned because format parameter is passed
    self.assertEquals(response.getHeader('content-type'),
                      'application/vnd.oasis.opendocument.presentation')
    # Document is rendered in web_site context
    response = self.publish(website.absolute_url_path() + '/' +\
                            document_reference + '/view', credential)
    self.assertEquals(response.getHeader('content-type'),
                                         'text/html; charset=utf-8')

  def test_PreviewOOoDocumentWithEmbeddedImage(self):
    """Tests html preview of an OOo document with images as extensible content.
    """
    portal = self.portal
    request = portal.REQUEST
    request['PARENTS'] = [self.app]
    self.getPortalObject().aq_parent.acl_users._doAddUser(
      'zope_user', '', ['Manager',], [])
    website = self.setupWebSite()
    web_section_portal_type = 'Web Section'
    web_section = website.newContent(portal_type=web_section_portal_type)

    document_reference = 'tiolive-ERP5.Freedom.TioLive'
    upload_file = makeFileUpload('tiolive-ERP5.Freedom.TioLive-001-en.odp')
    document = self.portal.document_module.newContent(
                                          portal_type='Presentation',
                                          reference=document_reference,
                                          file=upload_file)
    transaction.commit()
    self.tic()
    credential_list = ['ERP5TypeTestCase:', 'zope_user:']

    for credential in credential_list:
      # first, preview the draft in its physical location (in document module)
      response = self.publish('%s/asEntireHTML' % document.absolute_url_path(),
                              credential)
      self.assertTrue(response.getHeader('content-type').startswith('text/html'))
      html = response.getBody()
      self.assertTrue('<img' in html, html)

      # find the img src
      img_list = etree.HTML(html).findall('.//img')
      self.assertEquals(1, len(img_list))
      src = img_list[0].get('src')

      # and make another query for this img
      response = self.publish('%s/%s' % ( document.absolute_url_path(), src),
                              credential)
      self.assertEquals(response.getHeader('content-type'), 'image/png')
      png = response.getBody()
      self.assertTrue(png.startswith('\x89PNG'))

    # then publish the document and access it anonymously by reference through
    # the web site
    document.publish()
    
    transaction.commit()
    self.tic()

    response = self.publish('%s/%s/asEntireHTML' % (
              website.absolute_url_path(), document_reference))
    self.assertTrue(response.getHeader('content-type').startswith('text/html'))
    html = response.getBody()
    self.assertTrue('<img' in html, html)
    
    # find the img src
    img_list = etree.HTML(html).findall('.//img')
    self.assertEquals(1, len(img_list))
    src = img_list[0].get('src')

    # and make another query for this img
    response = self.publish('%s/%s/%s' % (
           website.absolute_url_path(), document_reference, src))
    self.assertEquals(response.getHeader('content-type'), 'image/png')
    png = response.getBody()
    self.assertTrue(png.startswith('\x89PNG'))

  def test_ImageConversionThroughWebSite(self):
    """Check that conversion parameters pass in url
    are hounoured to display an image in context of a website
    """
    portal = self.getPortal()
    request = portal.REQUEST
    request['PARENTS'] = [self.app]
    website = self.setupWebSite()
    web_section_portal_type = 'Web Section'
    web_section = website.newContent(portal_type=web_section_portal_type)

    web_page_reference = 'NXD-WEB-PAGE'
    content = '<p>initial text</p>'
    web_page_module = portal.getDefaultModule(portal_type='Web Page')
    web_page = web_page_module.newContent(portal_type='Web Page',
                                          reference=web_page_reference,
                                          text_content=content)
    web_page.publish()


    image_reference = 'NXD-IMAGE'
    image_module = portal.getDefaultModule(portal_type='Image')
    upload_file = makeFileUpload('tiolive-ERP5.Freedom.TioLive.Logo-001-en.png')
    image = image_module.newContent(portal_type='Image',
                                    file=upload_file,
                                    reference=image_reference)
    image.publish()
    transaction.commit()
    self.tic()
    credential = 'ERP5TypeTestCase:'

    # testing Image conversions, raw

    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference + '?format=', credential)
    self.assertEquals(response.getHeader('content-type'), 'image/png')

    # testing Image conversions, png
    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference + '?format=png', credential)
    self.assertEquals(response.getHeader('content-type'), 'image/png')

    # testing Image conversions, jpg
    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference + '?format=jpg', credential)
    self.assertEquals(response.getHeader('content-type'), 'image/jpeg')

    # testing Image conversions, resizing
    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference + '?display=large', credential)
    self.assertEquals(response.getHeader('content-type'), 'image/png')
    large_image = response.getBody()
    response = self.publish(website.absolute_url_path() + '/' +\
                            image_reference + '?display=small', credential)
    self.assertEquals(response.getHeader('content-type'), 'image/png')
    small_image = response.getBody()
    # if larger image is longer than smaller, then
    # Resizing works
    self.assertTrue(len(large_image) > len(small_image))

def test_suite():
  suite = unittest.TestSuite()
  suite.addTest(unittest.makeSuite(TestERP5WebWithDms))
  return suite