diff --git a/product/ERP5/tests/testInvoice.py b/product/ERP5/tests/testInvoice.py
new file mode 100755
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+++ b/product/ERP5/tests/testInvoice.py
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+##############################################################################
+#
+# Copyright (c) 2004 Nexedi SARL and Contributors. All Rights Reserved.
+#          Sebastien Robin <seb@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.
+#
+##############################################################################
+
+
+
+#
+# Skeleton ZopeTestCase
+#
+
+from random import randint
+
+import os, sys
+if __name__ == '__main__':
+    execfile(os.path.join(sys.path[0], 'framework.py'))
+
+# Needed in order to have a log file inside the current folder
+os.environ['EVENT_LOG_FILE'] = os.path.join(os.getcwd(), 'zLOG.log')
+os.environ['EVENT_LOG_SEVERITY'] = '-300'
+
+from Testing import ZopeTestCase
+from Products.ERP5Type.tests.ERP5TypeTestCase import ERP5TypeTestCase
+from AccessControl.SecurityManagement import newSecurityManager, noSecurityManager
+from DateTime import DateTime
+from Acquisition import aq_base, aq_inner
+from zLOG import LOG
+from Products.ERP5Type.DateUtils import addToDate
+from Products.ERP5Type.tests.Sequence import Sequence, SequenceList
+import time
+import os
+from Products.ERP5Type import product_path
+from DateTime import DateTime
+
+class Test(ERP5TypeTestCase):
+  """
+  This is the list of test
+
+  test setNextStartDate : 
+  - every hour
+  - at 6, 10, 15, 21 every day
+  - every day at 10
+  - every 3 days at 14 and 15 and 17
+  - every monday and friday, at 6 and 15
+  - every 1st and 15th every month, at 12 and 14
+  - every 1st day of every 2 month, at 6
+  """
+
+  # Different variables used for this test
+  run_all_test = 0
+  source_company_id = 'Nexedi'
+  destination_company_id = 'MyOrg'
+  account1 = 'prestation_service'
+  account2 = 'creance_client'
+  account3 = 'tva_collectee_196'
+  quantity1 = 3
+  price1 = 72
+  total_price1 = 216
+
+  def getTitle(self):
+    return "Invoices"
+
+  def getBusinessTemplateList(self):
+    """
+    """
+    return ('erp5_trade','erp5_accounting','erp5_pdm')
+
+  def getSaleOrderModule(self):
+    return getattr(self.getPortal(),'sale_order',None)
+
+  def getSalePackingListModule(self):
+    return getattr(self.getPortal(),'sale_packing_list',None)
+
+  def getProductModule(self):
+    return getattr(self.getPortal(),'product',None)
+
+  def getAccountModule(self):
+    return getattr(self.getPortal(),'account',None)
+
+  def getAccountingModule(self):
+    return getattr(self.getPortal(),'accounting',None)
+
+  def login(self, quiet=0, run=run_all_test):
+    uf = self.getPortal().acl_users
+    uf._doAddUser('seb', '', ['Manager'], [])
+    user = uf.getUserById('seb').__of__(uf)
+    newSecurityManager(None, user)
+
+  def afterSetUp(self, quiet=1, run=1):
+    """
+    """
+    # Create a product
+    product_module = self.getProductModule()
+    product = product_module.newContent(portal_type='Product',id='1')
+    product.setPricedQuantity(1.0)
+    product.setBasePrice(self.price1)
+    # Create a destination
+    organisation_module = self.getOrganisationModule()
+    organisation = organisation_module.newContent(portal_type='Organisation',id=self.destination_company_id)
+    organisation = organisation_module.newContent(portal_type='Organisation',id=self.source_company_id)
+    # Create some accounts
+    account_module = self.getAccountModule()
+    account_module.newContent(portal_type='Account',id='prestation_service')
+    account_module.newContent(portal_type='Account',id='creance_client')
+    account_module.newContent(portal_type='Account',id='tva_collectee_196')
+
+  def stepTic(self, **kw):
+    self.tic()
+
+  def stepFirstCheck(self,sequence=None, sequence_list=None,**kw):
+    """
+    Do some basics checking
+    """
+    # Check the default delivery rule
+    portal_rules = self.getRuleTool()
+    self.failUnless('default_order_rule' in portal_rules.objectIds())
+    # Check defaults accounts
+    account_module = self.getAccountModule()
+    self.failUnless(self.account1 in account_module.objectIds())
+    self.failUnless(self.account2 in account_module.objectIds())
+    self.failUnless(self.account3 in account_module.objectIds())
+    # Check product 
+    product_module = self.getProductModule()
+    product = product_module['1']
+    sequence.edit(product=product)
+    self.assertEquals(product.getBasePrice(),self.price1)
+
+  def stepCreateSaleOrder(self,sequence=None, sequence_list=None,**kw):
+    """
+    """
+    order_module = self.getSaleOrderModule()
+    order = order_module.newContent(portal_type='Sale Order')
+    order.setStartDate(DateTime('2004-11-20'))
+    order.setStopDate(DateTime('2004-11-24'))
+    destination_organisation = self.getOrganisationModule().getObject(self.destination_company_id)
+    order.setDestinationValue(destination_organisation)
+    source_organisation = self.getOrganisationModule().getObject(self.source_company_id)
+    order.setSourceValue(source_organisation)
+    line1 = order.newContent(portal_type='Sale Order Line',id='1')
+    product = sequence.get('product')
+    line1.setResourceValue(product)
+    line1.setTargetQuantity(self.quantity1)
+    line1.setPrice(self.price1)
+    sequence.edit(product=product)
+    sequence.edit(order=order)
+    self.assertEquals(line1.getTotalPrice(),self.total_price1)
+
+  def stepCreateOrderRule(self,sequence=None, sequence_list=None,**kw):
+    """
+    """
+    order = sequence.get('order')
+    order._createOrderRule()
+
+  def stepCreateDeliveryRule(self,sequence=None, sequence_list=None,**kw):
+    """
+    Only if we want a packing list with no order
+    """
+    packing_list = sequence.get('packing_list')
+    packing_list._createDeliveryRule()
+
+  def stepCheckOrderRule(self,sequence=None, sequence_list=None,**kw):
+    order = sequence.get('order')
+    simulation_tool = self.getSimulationTool()
+    # Check that there is an applied rule for our packing list
+    rule_list = [x for x in simulation_tool.objectValues() if x.getCausalityValue()==order]
+    self.assertEquals(len(rule_list),1)
+    order_rule = rule_list[0]
+    sequence.edit(order_rule=order_rule)
+    rule_line_list = order_rule.objectValues()
+    order_line_list = order.objectValues()
+    self.assertEquals(len(order_line_list,),len(rule_line_list))
+    self.assertEquals(1,len(rule_line_list))
+    rule_line = rule_line_list[0]
+    sequence.edit(order_rule_line=rule_line)
+    order_line = order_line_list[0]
+    product = sequence.get('product')
+    self.assertEquals(rule_line.getTargetQuantity(),self.quantity1)
+    self.assertEquals(rule_line.getPrice(),self.price1)
+    self.assertEquals(rule_line.getOrderValue(),order_line)
+    self.assertEquals(rule_line.getStartDate(),order_line.getStartDate())
+    self.assertEquals(rule_line.getStopDate(),order_line.getStopDate())
+    self.assertEquals(rule_line.getPortalType(),'Simulation Movement')
+    self.assertEquals(rule_line.getResourceValue(),order_line.getResourceValue())
+
+  def stepCheckInvoicingRule(self,sequence=None, sequence_list=None,**kw):
+    order_rule_line = sequence.get('order_rule_line')
+    invoicing_rule_list = order_rule_line.objectValues()
+    self.assertEquals(len(invoicing_rule_list),1)
+    invoicing_rule = invoicing_rule_list[0]
+    self.assertEquals(invoicing_rule.getSpecialiseId(),'default_invoicing_rule')
+    self.assertEquals(invoicing_rule.getPortalType(),'Applied Rule')
+    rule_line_list = invoicing_rule.objectValues()
+    self.assertEquals(len(rule_line_list),1)
+    rule_line = rule_line_list[0]
+    
+
+  def stepCheckDeliveryRule(self,sequence=None, sequence_list=None,**kw):
+    packing_list = sequence.get('packing_list')
+    self.failUnless(packing_list is not None)
+    simulation_tool = self.getSimulationTool()
+    # Check that there is an applied rule for our packing list
+    rule_list = [x for x in simulation_tool.objectValues() if x.getCausalityValue()==packing_list]
+    self.assertEquals(len(rule_list),1)
+    packing_list_rule = rule_list[0]
+    sequence.edit(packing_list_rule=packing_list_rule)
+    rule_line_list = packing_list_rule.objectValues()
+    packing_list_line_list = packing_list.objectValues()
+    self.assertEquals(len(packing_list_line_list,),len(rule_line_list))
+    self.assertEquals(1,len(rule_line_list))
+    rule_line = rule_line_list[0]
+    packing_list_line = packing_list_line_list[0]
+    self.assertEquals(rule_line.getQuantity(),self.quantity1)
+    self.assertEquals(rule_line.getPrice(),self.price1)
+    self.assertEquals(rule_line.getDeliveryValue(),packing_list_line)
+    self.assertEquals(rule_line.getStartDate(),packing_list_line.getStartDate())
+    self.assertEquals(rule_line.getStopDate(),packing_list_line.getStopDate())
+    self.assertEquals(rule_line.getPortalType(),'Simulation Movement')
+
+  def stepBuildDeliveryList(self,sequence=None, sequence_list=None,**kw):
+    """
+    """
+    order = sequence.get('order')
+
+    # It should be in a script inside the workflow
+    order.buildDeliveryList()
+
+  def stepBuildInvoiceList(self,sequence=None, sequence_list=None,**kw):
+    """
+    """
+    packing_list = sequence.get('packing_list')
+
+    # It should be in a script inside the workflow
+    packing_list.buildInvoiceList()
+
+  def stepCheckPackingList(self,sequence=None, sequence_list=None,**kw):
+    """
+    """
+    packing_list_module = self.getSalePackingListModule()
+    order_rule = sequence.get('order_rule')
+    order = sequence.get('order')
+    sale_packing_list_list = []
+    for o in packing_list_module.objectValues():
+      if o.getCausalityValue() == order:
+        sale_packing_list_list.append(o)
+    self.assertEquals(len(sale_packing_list_list),1)
+    sale_packing_list = sale_packing_list_list[0]
+    sale_packing_list_line_list = sale_packing_list.objectValues()
+    self.assertEquals(len(sale_packing_list_line_list),1)
+    sale_packing_list_line = sale_packing_list_line_list[0]
+    product = sequence.get('product')
+    self.assertEquals(sale_packing_list_line.getResourceValue(),product)
+    self.assertEquals(sale_packing_list_line.getPrice(),self.price1)
+    LOG('sale_packing_list_line.showDict()',0,sale_packing_list_line.showDict())
+    self.assertEquals(sale_packing_list_line.getQuantity(),self.quantity1)
+    self.assertEquals(sale_packing_list_line.getTotalPrice(),self.total_price1)
+    sequence.edit(packing_list=sale_packing_list)
+
+
+  def stepCheckInvoice(self,sequence=None, sequence_list=None,**kw):
+    """
+    """
+    accounting_module = self.getAccountingModule()
+    delivery_rule = sequence.get('delivery_rule')
+    sale_invoice_transaction_list = []
+    for o in accounting_module.objectValues():
+      if delivery_rule.getDeliveryValue() == o:
+        sale_invoice_transaction_list.append(o)
+    self.assertEquals(len(sale_invoice_transaction_list),1)
+    sale_invoice = sale_invoice_transaction_list[0]
+    sale_invoice_line_list = sale_invoice.objectValues()
+    self.assertEquals(len(sale_invoice_line_list),1)
+    sale_invoice_line = sale_invoice_line_list[0]
+    self.assertEquals(sale_invoice_line.getResourceValue(),product)
+    self.assertEquals(sale_invoice_line.getPrice(),self.price1)
+    self.assertEquals(sale_invoice_line.getQuantity(),self.quantity1)
+    self.assertEquals(sale_invoice_line.getTotalPrice(),self.total_price1)
+
+
+
+
+
+
+
+
+  def testInvoice(self, quiet=0,run=1):
+    """
+    We will play many sequences
+    """
+    sequence_list = SequenceList()
+    # Simple sequence 
+    # ... Fails
+    sequence_string =   'FirstCheck CreateSaleOrder CreateOrderRule Tic Tic' \
+                    +   ' CheckOrderRule BuildDeliveryList CheckPackingList' \
+                    +   ' Tic CheckInvoicingRule' \
+                    +   ' BuildInvoiceList Tic Tic '
+                    #+   'CheckInvoice'
+    sequence_list.addSequenceString(sequence_string)
+
+    sequence_list.play(self)
+
+
+
+
+if __name__ == '__main__':
+    framework()
+else:
+    import unittest
+    def test_suite():
+        suite = unittest.TestSuite()
+        suite.addTest(unittest.makeSuite(Test))
+        return suite
+