More pylint integration

Since early days of @arnau work on ERP5 components, we have pylint integrated as a way to check the code in components and in python scripts but nothing prevents us from commiting code with lint errors, leaving the problem for the next developer. 

For this, I extended [`CodingStyleTestCase`](https://lab.nexedi.com/nexedi/erp5/blob/88e4b34ff67aa07447f81c8af836feba607843e8/product/ERP5Type/tests/CodingStyleTestCase.py) that was introduced for very similar purpose so that it also  use our tool to check python code. This way,  we can have failing tests when the code do not pass pylint.

What's still not good is that if we want a business template to be tested, we have to explicitly add a test for this business template, but it's also the case for all our "static" tests (naming conventions, HTML validation etc).


A missing feature was that there was no way to get an overview of all the reported problems on a business template. For this, I added a report action on business template that uses the same code to display errors in all *python* code from a business template:

![ERP5_pylint_business_template](/uploads/13613199227884f0340b8f1c40ca4418/ERP5_pylint_business_template.png)
( the lines have direct links to edit python code )

Because `testERP5WebCodingStyle` was already here checking `erp5_web` (well not really because it was no longer using `CodingStyleTestCase` correctly) , I fixed all problems reported by pylint in erp5_web. In reality it only took a few minutes to do this.

PS: I don't know exactly how we could integrate javascript linter in all this. We have a [`test_javascript_lint`](https://lab.nexedi.com/nexedi/erp5/blob/master/product/ERP5/tests/testXHTML.py#L171), but it does not test much of the code written recently because it only checks portal skins. @romain and @vincentB maybe have plans for this. Anyway, it's out of the scope of this.

/cc @kazuhiko @vpelletier @tc 

/reviewed-on !308

bt5/erp5_administration/ActionTemplateItem/portal_types/Business%20Template/check_python_code.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="ActionInformation" module="Products.CMFCore.ActionInformation"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>action</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+            </value>
+        </item>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>action_type/object_report</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>category</string> </key>
+            <value> <string>object_report</string> </value>
+        </item>
+        <item>
+            <key> <string>condition</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value>
+              <none/>
+            </value>
+        </item>
+        <item>
+            <key> <string>icon</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>check_python_code</string> </value>
+        </item>
+        <item>
+            <key> <string>permissions</string> </key>
+            <value>
+              <tuple>
+                <string>Manage portal</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>priority</string> </key>
+            <value> <float>12.0</float> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Check Python Code</string> </value>
+        </item>
+        <item>
+            <key> <string>visible</string> </key>
+            <value> <int>1</int> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="Expression" module="Products.CMFCore.Expression"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>text</string> </key>
+            <value> <string>string:${object_url}/BusinessTemplate_viewCheckPythonCodeDialog</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/BusinessTemplate_getPythonSourceCodeMessageList.py

+"""Return python source code in business template
+"""
+import json
+
+class Message:
+  """A python code linter message, with a link to edit the source code.
+
+  Supports both being displayed in a listbox and being printed.
+  """
+  def __init__(self, location, message, edit_url):
+    self.location = location
+    self.message = message
+    self.edit_url = edit_url
+
+  def getListItemUrl(self, *args, **kw):
+    return self.edit_url
+
+  def __repr__(self):
+    return "{}:{}".format(self.location, self.message)
+
+
+portal = context.getPortalObject()
+line_list = []
+
+def checkPythonScript(script_instance, script_path):
+  """Check a python script, adding messages to global `line_list`
+  """
+  # printed is from  RestrictedPython.RestrictionMutator the rest comes from
+  # RestrictedPython.Utilities.utility_builtins
+  extra_builtins = ['printed', 'same_type', 'string', 'sequence', 'random',
+    'DateTime', 'whrandom', 'reorder', 'sets', 'test', 'math']
+  for annotation in json.loads(portal.ERP5Site_checkPythonSourceCodeAsJSON(
+      {'bound_names': extra_builtins +
+         script_instance.getBindingAssignments().getAssignedNamesInOrder(),
+       'params': script_instance.params(),
+       'code': unicode(script_instance.read(), 'utf8')
+      }))['annotations']:
+    annotation["script_path"] = script_path
+    line_list.append(
+      Message(
+        location="{script_path}:{row}:{column}".format(**annotation),
+        message=annotation['text'],
+        edit_url="{script_path}/manage_main?line={row}".format(**annotation),))
+
+def checkComponent(component_instance):
+  """Check a component, adding messages to global `line_list`
+  """
+  for annotation in json.loads(portal.ERP5Site_checkPythonSourceCodeAsJSON(
+        {'code': unicode(component_instance.getTextContent(), 'utf8')}))['annotations']:
+    annotation['component_path'] = component_instance.getRelativeUrl()
+    line_list.append(
+      Message(
+        location="{component_path}:{row}:{column}".format(**annotation),
+        message=annotation["text"],
+        edit_url="{component_path}?line={row}".format(**annotation),))
+
+# Check scripts
+script_container_list = []
+for skin_id in context.getTemplateSkinIdList():
+  script_container_list.append(portal.portal_skins[skin_id])
+for workflow_id in context.getTemplateWorkflowIdList():
+  script_container_list.append(portal.portal_workflow[workflow_id])
+
+for script_container in script_container_list:
+  for script_path, script_instance in portal.ZopeFind(
+      script_container,
+      obj_metatypes=['Script (Python)'],
+      search_sub=1):
+    checkPythonScript(script_instance, "%s/%s" % (
+      portal.portal_url.getRelativeUrl(script_container), script_path))
+
+# Check components
+for component_id in (
+    context.getTemplateExtensionIdList() +
+    context.getTemplateDocumentIdList() +
+    context.getTemplateTestIdList()):
+  checkComponent(portal.portal_components[component_id])
+
+return line_list

bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/ERP5Site_checkPythonScriptsWithPyflakes.xml → bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/BusinessTemplate_getPythonSourceCodeMessageList.xml

@@ -50,11 +50,11 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string></string> </value>
+            <value> <string>*args, **kw</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>
-            <value> <string>ERP5Site_checkPythonScriptsWithPyflakes</string> </value>
+            <value> <string>BusinessTemplate_getPythonSourceCodeMessageList</string> </value>
         </item>
       </dictionary>
     </pickle>

bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/BusinessTemplate_viewCheckPythonCodeDialog.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="ERP5 Form" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>_bind_names</string> </key>
+            <value>
+              <object>
+                <klass>
+                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
+                </klass>
+                <tuple/>
+                <state>
+                  <dictionary>
+                    <item>
+                        <key> <string>_asgns</string> </key>
+                        <value>
+                          <dictionary/>
+                        </value>
+                    </item>
+                  </dictionary>
+                </state>
+              </object>
+            </value>
+        </item>
+        <item>
+            <key> <string>_objects</string> </key>
+            <value>
+              <tuple/>
+            </value>
+        </item>
+        <item>
+            <key> <string>action</string> </key>
+            <value> <string>BusinessTemplate_viewCheckPythonCodeDialog</string> </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>edit_order</string> </key>
+            <value>
+              <list/>
+            </value>
+        </item>
+        <item>
+            <key> <string>encoding</string> </key>
+            <value> <string>UTF-8</string> </value>
+        </item>
+        <item>
+            <key> <string>enctype</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>group_list</string> </key>
+            <value>
+              <list>
+                <string>left</string>
+                <string>right</string>
+                <string>center</string>
+                <string>bottom</string>
+                <string>hidden</string>
+              </list>
+            </value>
+        </item>
+        <item>
+            <key> <string>groups</string> </key>
+            <value>
+              <dictionary>
+                <item>
+                    <key> <string>bottom</string> </key>
+                    <value>
+                      <list>
+                        <string>listbox</string>
+                      </list>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>center</string> </key>
+                    <value>
+                      <list/>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>hidden</string> </key>
+                    <value>
+                      <list/>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>left</string> </key>
+                    <value>
+                      <list/>
+                    </value>
+                </item>
+                <item>
+                    <key> <string>right</string> </key>
+                    <value>
+                      <list/>
+                    </value>
+                </item>
+              </dictionary>
+            </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>BusinessTemplate_viewCheckPythonCodeDialog</string> </value>
+        </item>
+        <item>
+            <key> <string>method</string> </key>
+            <value> <string>POST</string> </value>
+        </item>
+        <item>
+            <key> <string>name</string> </key>
+            <value> <string>BusinessTemplate_viewCheckPythonCodeDialog</string> </value>
+        </item>
+        <item>
+            <key> <string>pt</string> </key>
+            <value> <string>form_dialog</string> </value>
+        </item>
+        <item>
+            <key> <string>row_length</string> </key>
+            <value> <int>4</int> </value>
+        </item>
+        <item>
+            <key> <string>stored_encoding</string> </key>
+            <value> <string>UTF-8</string> </value>
+        </item>
+        <item>
+            <key> <string>title</string> </key>
+            <value> <string>Check Python Code</string> </value>
+        </item>
+        <item>
+            <key> <string>unicode_mode</string> </key>
+            <value> <int>0</int> </value>
+        </item>
+        <item>
+            <key> <string>update_action</string> </key>
+            <value> <string></string> </value>
+        </item>
+        <item>
+            <key> <string>update_action_title</string> </key>
+            <value> <string></string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/ERP5Site_checkPythonScriptsWithPyflakes.py

-"""Runs pylint/pyflakes on all python scripts.
-
-TODO / BUGS:
-* script containing only a comment cannot be parsed
-* wouldn't it be better to use this on a business template to check scripts
-from the business template ?
-"""
-import json
-
-def checkPythonSourceCode(script_instance):
-  # printed is from  RestrictedPython.RestrictionMutator the rest comes from
-  # RestrictedPython.Utilities.utility_builtins
-  extra_builtins = ['printed', 'same_type', 'string', 'sequence', 'random',
-    'DateTime', 'whrandom', 'reorder', 'sets', 'test', 'math']
-  return json.loads(context.ERP5Site_checkPythonSourceCodeAsJSON(
-      {'bound_names': extra_builtins + script_instance.getBindingAssignments().getAssignedNamesInOrder(),
-       'params': script_instance.params(),
-       'code': unicode(script_instance.read(), 'utf8')
-      }))['annotations']
-
-for script_container in (context.portal_skins, context.portal_workflow):
-  for script_path, script_instance in context.ZopeFind(script_container, obj_metatypes=['Script (Python)'], search_sub=1):
-    for annotation in checkPythonSourceCode(script_instance):
-      annotation["script_path"] = "%s/%s" % (script_container.getId(), script_path)
-      print "{script_path}:{row}:{column}:{text}".format(**annotation)
-
-
-return printed

bt5/erp5_administration/bt/template_action_path_list

+Business Template | check_python_code
 Missing Category Document Constraint | predicate
 Missing Category Document Constraint | view
 portal_actions | consistency

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/Base_convertHtmlToSingleFile.py

@@ -12,6 +12,8 @@ Export the web page and its components to a single (m)html file.
 
 TODO: export same components into one mhtml attachment if possible.
 """
+# ERP5 web uses format= argument, which is also a python builtin
+# pylint: disable=redefined-builtin
 
 from zExceptions import Unauthorized
 from base64 import b64encode, b64decode

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/Form_getGroupList.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>group_by_criterion=[\'left\', \'right\', \'center\', \'bottom\', \'hidden\']</string> </value>
+            <value> <string>group_by_criterion=(\'left\', \'right\', \'center\', \'bottom\', \'hidden\')</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/StaticWebSection_getDocumentValue.py

@@ -20,11 +20,6 @@
 """
 from Products.ZSQLCatalog.SQLCatalog import SimpleQuery, ComplexQuery
 if portal is None: portal = context.getPortalObject()
-portal_catalog = portal.portal_catalog
-# The list of portal types here should be large enough to include
-# all portal_types defined in the various sections so that
-# href tags which point to a document by reference can still work.
-valid_portal_type_list = portal.getPortalDocumentTypeList()
 
 # Find the applicable language
 if language is None:

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebPage_exportAsSingleFile.py

@@ -3,7 +3,8 @@ Export the web page and its components to a single (m)html file.
 
 see Base_convertHtmlToSingleFile for documentation
 """
-
+# ERP5 web uses format= argument, which is also a python builtin
+# pylint: disable=redefined-builtin
 data = context.Base_convertHtmlToSingleFile(
   context.getTextContent(""),
   allow_script=allow_script,

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebPage_hashPublicationSectionItemList.py

@@ -5,6 +5,8 @@
 """
 # Initialise result
 sub_field_list = []
+if default_sub_field_property_dict is None:
+  default_sub_field_property_dict = {}
 
 # Maximum size of the MultiListField
 default_sub_field_property_dict.update({
@@ -17,7 +19,7 @@ default_sub_field_property_dict.update({
 })
 
 z = 0
-for i in range(1):
+for _ in range(1):
   new_dict = default_sub_field_property_dict.copy()
   new_dict['title'] = ' '
   new_dict['key'] = str(z)

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebPage_hashPublicationSectionItemList.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>item_list, value_list, default_sub_field_property_dict={}, is_right_display=0</string> </value>
+            <value> <string>item_list, value_list, default_sub_field_property_dict=None, is_right_display=0</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebSection_createNewWebPage.py

 request = context.REQUEST
-request_form = context.REQUEST.form
+request_form = request.form
 from ZTUtils import make_query
 portal = context.getPortalObject()
 title = context.getTitle('Unknown')

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebSection_generateSectionFromCategory.py

@@ -5,6 +5,9 @@
 
   category -- the category to use
 """
+# our pylint integration does not support global variabled in zope python script.
+# pylint: disable=global-variable-undefined
+
 from ZODB.POSException import ConflictError
 portal = context.getPortalObject()
 translateString = context.Base_translateString
@@ -20,7 +23,7 @@ def getNiceID(s):
   s = s.lower()
   s = s.split()
   s = '-'.join(s)
-  s = filter(lambda c: c in valid_char, s)
+  s = [c for c in s if c in valid_char]
   s = s.replace('_', '-')
   return s
 
@@ -77,7 +80,7 @@ def createWebSectionFromCategoryValue(container, category, depth, section_id=Non
       new_section.updateLocalRolesOnSecurityGroups()
     except ConflictError:
       raise
-    except:
+    except Exception:
       failed_list.append(category.getRelativeUrl())
   else:
     new_section = container[section_id]

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebSection_getDefaultDocumentValue.py

@@ -24,11 +24,6 @@
  portal skins. It is recommended to use the first approach
  to host multiple sites on a single ERP5Site instance.
 """
-portal_object = context.getPortalObject()
-
-# First find the Web Section or Web Site we belong to
-current_section = context.getWebSectionValue()
-
 # First get all the applicable references
 # There might be more than one reference due to security differences
 # (ex. a default restricted web page and a default public web page)

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebSection_newDefaultWebPage.py

-request = context.REQUEST
 portal = context.getPortalObject()
 title = context.getTitle('Unknown')
 translateString = context.Base_translateString

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebSite_createWebSiteAccount.py

@@ -10,11 +10,11 @@
     - you need to adjust group, function and site to your needs
 """
 
+# pylint: disable=unreachable
 # since the following code is just an example, we simply raise an exception so that
 # it is not executed actually.
 raise NotImplementedError
 
-from Products.Formulator.Errors import ValidationError, FormValidationError
 portal = context.getPortalObject()
 translateString = context.Base_translateString
 website = context.getWebSiteValue()
@@ -25,7 +25,7 @@ result, result_type = context.Base_edit(form_id, silent_mode=1, field_prefix='yo
 # Return if not appropriate
 if result_type != 'edit':
   return result
-kw, encapsulated_editor_list = result
+kw, _ = result
 
 # Set default values
 person_group = kw.get('group', None)
@@ -55,7 +55,7 @@ person.validate()
 #person.immediateReindexObject()
 
 # Create default career
-career = person.newContent(portal_type='Career',
+person.newContent(portal_type='Career',
                   id='default_career',
                   group=person_group,
                   function=person_function,

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebSite_getMainSectionList.py

@@ -4,4 +4,4 @@
 """
 site = context.getWebSiteValue()
 section_list = site.contentValues(portal_type='Web Section', sort_on='int_index', checked_permission='View')
-return filter(lambda x: x.isVisible(), section_list)
+return [x for x in section_list if x.isVisible()]

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web_widget_library/Base_getWorkflowEventInfoList.py

@@ -7,16 +7,16 @@
 
 from Products.CMFCore.WorkflowCore import WorkflowException
 history = {}
-workflow_id_list = [workflow_id for workflow_id, workflow_state in context.getWorkflowStateItemList()]
+workflow_id_list = [workflow_id for workflow_id, _ in context.getWorkflowStateItemList()]
 for wf_id in workflow_id_list:
   try:
-    history[wf_id]=context.Base_getWorkflowHistoryItemList(workflow_id=wf_id)
+    history[wf_id] = context.Base_getWorkflowHistoryItemList(workflow_id=wf_id)
   except WorkflowException:
     # some workflow don't have history
     pass
 
 event_list = []
-for worrkflow_id in history.keys():
-  event_list += history[worrkflow_id]
+for workflow_id in history.keys():
+  event_list += history[workflow_id]
 if sort: event_list.sort(key=lambda x:x.time, reverse=True)
 return event_list

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web_widget_library/WebSection_viewSubjectIndexRenderer.py

@@ -9,8 +9,6 @@
   Result is cached for high performance.
 """
 
-web_site_value = context.getWebSiteValue()
-web_site_url = web_site_value.absolute_url()
 web_section_value = context.getWebSectionValue()
 web_section_url = web_section_value.absolute_url()
 context = web_section_value

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web_widget_library/WebSite_redirectToUserPreference.py

@@ -7,9 +7,7 @@
 from zExceptions import Unauthorized
 
 # Initialize some useful variables
-request = context.REQUEST
 portal = context.getPortalObject()
-website = context.getWebSiteValue()
 user = portal.portal_membership.getAuthenticatedMember()
 user_preference = None
 portal_preferences = portal.portal_preferences

bt5/erp5_web/WorkflowTemplateItem/portal_workflow/category_publication_workflow/scripts/expireAll.py

-object = state_change['object']
+document = state_change['object']
 
-workflow_tool = object.getPortalObject().portal_workflow
+workflow_tool = document.getPortalObject().portal_workflow
 
-if workflow_tool.isTransitionPossible(object, 'expire'):
-  object.expire()
+if workflow_tool.isTransitionPossible(document, 'expire'):
+  document.expire()
 
-if workflow_tool.isTransitionPossible(object, 'expire_protected'):
-  object.expireProtected()
+if workflow_tool.isTransitionPossible(document, 'expire_protected'):
+  document.expireProtected()
 
-if workflow_tool.isTransitionPossible(object, 'expire_published'):
-  object.expirePublished()
+if workflow_tool.isTransitionPossible(document, 'expire_published'):
+  document.expirePublished()

bt5/erp5_web/bt/template_extension_id_list

+extension.erp5.WebUtility
\ No newline at end of file

product/ERP5/tests/testERP5WebCodingStyle.py

@@ -30,13 +30,16 @@
 import unittest
 from Products.ERP5Type.tests.CodingStyleTestCase import CodingStyleTestCase
 
-class CodingStyle(CodingStyleTestCase):
+class ERP5WebCodingStyle(CodingStyleTestCase):
   """
   Check consistency of erp5_web business template code
   """
   def getTitle(self):
     return "erp5_web CodingStyle"
 
+  def getTestedBusinessTemplateList(self):
+    return ('erp5_web', )
+
   def getBusinessTemplateList(self):
     """
     Return the list of required business templates.
@@ -47,9 +50,10 @@ class CodingStyle(CodingStyleTestCase):
             'erp5_ingestion_mysql_innodb_catalog',
             'erp5_ingestion',
             'erp5_crm',
+            'erp5_administration',
             )
 
 def test_suite():
   suite = unittest.TestSuite()
-  suite.addTest(unittest.makeSuite(CodingStyle))
+  suite.addTest(unittest.makeSuite(ERP5WebCodingStyle))
   return suite

product/ERP5Type/CodingStyle.py

@@ -75,11 +75,12 @@ def getSkinPrefixList(self):
   # Add other prefix
   skin_prefix_list.extend((
     'Base',
-    'Entity',
-    'NotificationTool',
     'ERP5Site',
     'ERP5Type',
+
+    'Entity', # A base class for Person / Organisation
     'Form', # Acceptable for ERP5 Forms which will soon become portal types too
+    'Brain', # Catalog brains
   ))
 
   return set(skin_prefix_list)

product/ERP5Type/tests/CodingStyleTestCase.py

@@ -32,18 +32,16 @@ from Testing import ZopeTestCase
 from Acquisition import aq_base
 
 class CodingStyleTestCase(ERP5TypeTestCase):
-  """XXX
+  """Test case to test coding style in business templates.
+
+  Subclasses must override:
+    * getBusinessTemplateList to list business template to install.
+    * getTestedBusinessTemplateList to list business templates to test.
   """
   manager_username = 'zope'
   manager_password = 'zope'
   website_id = 'test'
 
-  def getTitle(self):
-    """
-    Override this method in implementation class.
-    """
-    raise NotImplementedError
-
   def getBusinessTemplateList(self):
     """
     Return the list of required business templates.
@@ -94,3 +92,17 @@ class CodingStyleTestCase(ERP5TypeTestCase):
     # Return results
     if len(message_list):
       raise self.failureException('\n'.join(map(lambda x: repr(x), message_list)))
+
+  def test_PythonSourceCode(self):
+    """test python script from the tested business templates.
+
+    reuses BusinessTemplate_getPythonSourceCodeMessageList from erp5_administration
+    """
+    if 'erp5_administration' not in self.getBusinessTemplateList():
+      self.skipTest('erp5_administration needs be installed to check python source code')
+
+    self.maxDiff = None
+    for business_template in self.portal.portal_templates.contentValues():
+      if business_template.getTitle() in self.getTestedBusinessTemplateList():
+        self.assertEqual([], business_template.BusinessTemplate_getPythonSourceCodeMessageList())
+