added feature(s) for BPM to support:

  - to calculate of expected start/stop date
  - to get remaining trade_phase list

and update some related code:
  - ERP5Site can be get simulation state list from related workflows
  - typo



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27190 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessPath.py

@@ -2,6 +2,7 @@
 #
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
 #                    Jean-Paul Smets-Solanes <jp@nexedi.com>
+#                    Yusuke Muraoka <yusuke@nexedi.com>
 #
 # WARNING: This program as such is intended to be used by professional
 # programmers who take the whole responsability of assessing all potential
@@ -35,6 +36,11 @@ from Products.ERP5.Document.Path import Path
 
 import zope.interface
 
+class BackTrack(Exception):
+  """
+   This is a utility Exception for tree back tracking.
+  """
+
 class BusinessPath(Path):
   """
     The BusinessPath class embeds all information related to 
@@ -191,7 +197,7 @@ class BusinessPath(Path):
       Not sure if this will exist some day XXX
     """
 
-  def _getRelatedSimulationMovementList(explanation):
+  def _getRelatedSimulationMovementList(self, explanation):
     """
       
     """
@@ -203,7 +209,7 @@ class BusinessPath(Path):
       Looks at all simulation related movements
       and checks the simulation_state of the delivery
     """
-    acceptable_state_list = self.getCompletedStateIdList() # XXX Missing method / name
+    acceptable_state_list = self.getCompletedStateList()
     for movement in self._getRelatedSimulationMovementList(explanation):
       if movement.getSimulationState() not in acceptable_state_list:
         return False
@@ -214,7 +220,7 @@ class BusinessPath(Path):
       Looks at all simulation related movements
       and checks the simulation_state of the delivery
     """
-    acceptable_state_list = self.getCompletedStateList() # XXX Missing method / name
+    acceptable_state_list = self.getCompletedStateList()
     for movement in self._getRelatedSimulationMovementList(explanation):
       if movement.getSimulationState() in acceptable_state_list:
         return True
@@ -244,7 +250,7 @@ class BusinessPath(Path):
         self._getRelatedSimulationMovementList(explanation)) # Another way
 
   # Date calculation
-  def getExpectedStartDate(self, explanation, predecessor_date=None):
+  def getExpectedStartDate(self, explanation, predecessor_date=None, *args, **kwargs):
     """
       Returns the expected start date for this
       path based on the explanation.
@@ -252,11 +258,35 @@ class BusinessPath(Path):
       predecessor_date -- if provided, computes the date base on the
                           date value provided
     """
+    return self._getExpectedDate(explanation,
+                                 self._getRootExplanationExpectedStartDate,
+                                 self._getPredecessorExpectedStartDate,
+                                 self._getSuccessorExpectedStartDate,
+                                 predecessor_date=predecessor_date,
+                                 *args, **kwargs)
+
+  def _getRootExplanationExpectedStartDate(self, explanation, *args, **kwargs):
+    if self.getParentValue().isStartDateReferential():
+      return explanation.getStartDate()
+    else:
+      return self.getExpectedStopDate(explanation, *args, **kwargs)\
+             - self.getLeadTime()
+
+  def _getPredecessorExpectedStartDate(self, explanation, predecessor_date=None, *args, **kwargs):
     if predecessor_date is None:
-      predecessor_date = self.getPredecessorValue().getExpectedCompletionDate()
-    return predecessor_date + wait_time
-
-  def getExpectedStopDate(self, explanation, predecessor_date=None):
+      node = self.getPredecessorValue()
+      if node is not None:
+        predecessor_date = node.getExpectedCompletionDate(explanation, *args, **kwargs)
+    if predecessor_date is not None:
+      return predecessor_date + self.getWaitTime()
+
+  def _getSuccessorExpectedStartDate(self, explanation, *args, **kwargs):
+    node = self.getSuccessorValue()
+    if node is not None:
+      return node.getExpectedBeginningDate(explanation, *args, **kwargs)\
+             - self.getLeadTime()
+
+  def getExpectedStopDate(self, explanation, predecessor_date=None, *args, **kwargs):
     """
       Returns the expected stop date for this
       path based on the explanation.
@@ -264,4 +294,77 @@ class BusinessPath(Path):
       predecessor_date -- if provided, computes the date base on the
                           date value provided
     """
-    return context.getExpectedStartDate(explanation, predecessor_date=predecessor_date) + lead_time
+    return self._getExpectedDate(explanation,
+                                 self._getRootExplanationExpectedStopDate,
+                                 self._getPredecessorExpectedStopDate,
+                                 self._getSuccessorExpectedStopDate,
+                                 predecessor_date=predecessor_date,
+                                 *args, **kwargs)
+
+  def _getRootExplanationExpectedStopDate(self, explanation, *args, **kwargs):
+    if self.getParentValue().isStopDateReferential():
+      return explanation.getStopDate()
+    else:
+      return self.getExpectedStartDate(explanation, *args, **kwargs)\
+             + self.getLeadTime()
+
+  def _getPredecessorExpectedStopDate(self, explanation, *args, **kwargs):
+    node = self.getPredecessorValue()
+    if node is not None:
+      return node.getExpectedCompletionDate(explanation, *args, **kwargs)\
+             + self.getWaitTime() + self.getLeadTime()
+
+  def _getSuccessorExpectedStopDate(self, explanation, *args, **kwargs):
+    node = self.getSuccessorValue()
+    if node is not None:
+      return node.getExpectedBeginningDate(explanation, *args, **kwargs)
+
+  def _getExpectedDate(self, explanation, root_explanation_method,
+                       predecessor_method, successor_method,
+                       visited=None, *args, **kwargs):
+    """
+      Returns the expected stop date for this
+      path based on the explanation.
+
+      root_explanation_method -- used when the path is root explanation
+      predecessor_method --- used to get expected date of side of predecessor
+      successor_method --- used to get expected date of side of successor
+      visited -- only used to prevent infinite recursion internally
+    """
+    if visited is None:
+      visited = []
+
+    # mark the path as visited
+    if self not in visited:
+      visited.append(self)
+
+    if self.isDeliverable():
+      return root_explanation_method(
+        explanation, visited=visited, *args, **kwargs)
+
+    predecessor_expected_date = None
+    try:
+      predecessor_expected_date = predecessor_method(
+        explanation, visited=visited, *args, **kwargs)
+    except BackTrack:
+      pass
+
+    successor_expected_date = None
+    try:
+      successor_expected_date = successor_method(
+        explanation, visited=visited, *args, **kwargs)
+    except BackTrack:
+      pass
+
+    if successor_expected_date is not None or \
+       predecessor_expected_date is not None:
+      # return minimum expected date but it is not None
+      if successor_expected_date is None:
+        return predecessor_expected_date
+      elif predecessor_expected_date is None:
+        return successor_expected_date
+      else:
+        if predecessor_expected_date < successor_expected_date:
+          return predecessor_expected_date
+        else:
+          return successor_expected_date

product/ERP5/Document/BusinessProcess.py

@@ -2,6 +2,7 @@
 #
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
 #                    Jean-Paul Smets-Solanes <jp@nexedi.com>
+#                    Yusuke Muraoka <yusuke@nexedi.com>
 #
 # WARNING: This program as such is intended to be used by professional
 # programmers who take the whole responsability of assessing all potential
@@ -55,6 +56,7 @@ class BusinessProcess(Path, XMLObject):
                     , PropertySheet.Folder
                     , PropertySheet.Comment
                     , PropertySheet.Arrow
+                    , PropertySheet.BusinessProcess
                     )
 
   # Access to path and states of the business process
@@ -177,3 +179,9 @@ class BusinessProcess(Path, XMLObject):
     """
     for path in self.getBuildablePathValueList(explanation):
       path.build(explanation)
+
+  def isStartDateReferential(self):
+    return self.getReferentialDate() == 'start_date'
+
+  def isStopDateReferential(self):
+    return self.getReferentialDate() == 'stop_date'

product/ERP5/Document/BusinessState.py

@@ -2,6 +2,7 @@
 #
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
 #                    Jean-Paul Smets-Solanes <jp@nexedi.com>
+#                    Yusuke Muraoka <yusuke@nexedi.com>
 #
 # WARNING: This program as such is intended to be used by professional
 # programmers who take the whole responsability of assessing all potential
@@ -31,6 +32,7 @@ from AccessControl import ClassSecurityInfo
 
 from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
 from Products.ERP5Type.XMLObject import XMLObject
+from Products.ERP5Type.Document.BusinessPath import BackTrack
 
 class BusinessState(XMLObject):
   """
@@ -77,14 +79,103 @@ class BusinessState(XMLObject):
     return True
 
   # Duration calculation
-  def getExpectedCompletionDate(self, explanation):
+  def getExpectedCompletionDate(self, explanation, *args, **kwargs):
     """
       Returns the expected completion date for this
       state based on the explanation.
+
+      explanation -- the document
+    """
+    # Should be re-calculated?
+    if 'predecessor_date' in kwargs:
+      del kwargs['predecessor_date']
+    return min(self._getExpectedDateList(explanation,
+                                         self.getSuccessorRelatedValueList(),
+                                         self._getExpectedCompletionDate,
+                                         *args,
+                                         **kwargs))
+
+  def _getExpectedCompletionDate(self, path, *args, **kwargs):
+    return path.getExpectedStopDate(*args, **kwargs)
+
+  def getExpectedBeginningDate(self, explanation, *args, **kwargs):
+    """
+      Returns the expected beginning date for this
+      state based on the explanation.
+
+      explanation -- the document
+    """
+    # Should be re-calculated?
+    if 'predecessor_date' in kwargs:
+      del kwargs['predecessor_date']
+    return min(self._getExpectedDateList(explanation,
+                                         self.getPredecessorRelatedValueList(),
+                                         self._getExpectedBeginningDate,
+                                         *args,
+                                         **kwargs))
+
+  def _getExpectedBeginningDate(self, path, *args, **kwargs):
+    expected_date = path.getExpectedStartDate(*args, **kwargs)
+    if expected_date is not None:
+      return expected_date - path.getWaitTime()
+
+  def _getExpectedDateList(self, explanation, path_list, path_method,
+                           visited=None, *args, **kwargs):
+    """
+      getExpected(Beginning/Completion)Date are same structure
+      expected date of each path should be returned.
+
+      explanation -- the document
+      path_list -- list of target business path
+      path_method -- used to get expected date on each path
+      visited -- only used to prevent infinite recursion internally
     """
+    if visited is None:
+      visited = []
+
+    expected_date_list = []
+    for path in path_list:
+      # filter paths without path of root explanation
+      if path not in visited or path.isDeliverable():
+        expected_date = path_method(path, explanation, visited=visited, *args, **kwargs)
+        if expected_date is not None:
+          expected_date_list.append(expected_date)
+
+    # if visiting leaf of tree
+    if len(expected_date_list) == 0:
+      raise BackTrack
+    else:
+      return expected_date_list
 
   def getExpectedCompletionDuration(self, explanation):
     """
       Returns the expected completion duration for this
       state.
     """
+
+  def getRemainingTradePhaseList(self, explanation, trade_phase_list=None):
+    """
+      Returns the list of remaining trade phase for this
+      state based on the explanation.
+
+      trade_phase_list -- if provide, the result is filtered by it after collected
+    """
+    remaining_trade_phase_list = []
+    for path in self.getPredecessorRelatedValueList():
+      if not (path.isCompleted(explanation) or
+              path.isPartiallyCompleted(explanation)):
+        remaining_trade_phase_list += path.getTradePhaseValueList()
+
+      # collect to successor direction recursively
+      state = path.getSuccessorValue()
+      if state is not None:
+        remaining_trade_phase_list.extend(
+          state.getRemainingTradePhaseList(explanation, None))
+
+    # filter just at once if given
+    if trade_phase_list is not None:
+      remaining_trade_phase_list = filter(
+        lambda x : x.getLogicalPath() in trade_phase_list,
+        remaining_trade_phase_list)
+
+    return remaining_trade_phase_list

product/ERP5/ERP5Site.py

@@ -941,6 +941,28 @@ class ERP5Site(FolderMixIn, CMFSite):
     return self._getPortalConfiguration(
         'portal_updatable_amortisation_transaction_state_list')
 
+  security.declareProtected(Permissions.AccessContentsInformation,
+                            'getPortalGroupedSimulationStateList')
+  def getPortalGroupedSimulationStateList(self):
+    """
+      Return all states which is related to simulation state workflow and state type
+    """
+    def getStateList():
+      state_dict = {}
+      for wf in self.portal_workflow.objectValues():
+        if getattr(wf, 'variables', None) and \
+           wf.variables.getStateVar() == 'simulation_state':
+          if getattr(wf, 'states', None):
+            for state in wf.states.objectValues():
+              if getattr(state, 'type_list', None):
+                state_dict[state.getId()] = None
+      return tuple(sorted(state_dict.keys()))
+
+    getStateList = CachingMethod(getStateList,
+                                 id=('getPortalGroupedSimulationStateList'),
+                                 cache_factory='erp5_content_medium')
+    return getStateList()
+
   security.declareProtected(Permissions.AccessContentsInformation,
                             'getPortalColumnBaseCategoryList')
   def getPortalColumnBaseCategoryList(self):

product/ERP5/Interface/IBusinessCompletable.py

@@ -61,4 +61,11 @@ class IBusinessCompletable(Interface):
 
     'task' is a document which follows the ITaskGetter interface
     (getStartDate, getStopDate)
-    """
+    """
\ No newline at end of file
+
+  def getRemainingTradePhaseList(explanation, trade_phase_list=None):
+    """
+      Returns the list of remaining trade phase which to be done on the explanation.
+
+      trade_phase_list -- if provide, the result is filtered by it after collected
+    """

product/ERP5/PropertySheet/BusinessPath.py

-# -*- coding: utf8 -*-
+# -*- coding: utf-8 -*-
 ##############################################################################
 #
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
 #                    Łukasz Nowak <luke@nexedi.com>
+#                    Yusuke Muraoka <yusuke@nexedi.com>
 #
 # WARNING: This program as such is intended to be used by professional
 # programmers who take the whole responsability of assessing all potential
@@ -54,5 +55,11 @@ class BusinessPath:
             'default'     : 0.0,
             'type'        : 'float',
             'mode'        : 'w' },
+        {   'id'          : 'completed_state',
+            'description' : 'Which movement of simulation state can be passed on this path',
+            'type'        : 'lines',
+            'default'     : [],
+            'multivalued' : 1,
+            'mode'        : 'w' },
     )
     _categories = ( )

product/ERP5/PropertySheet/BusinessProcess.py

+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
+#                    Łukasz Nowak <luke@nexedi.com>
+#                    Yusuke Muraoka <yusuke@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.
+#
+##############################################################################
+
+class BusinessProcess:
+    """
+      Business Process properties
+    """
+    _properties = (
+        {   'id'          : 'referential_date',
+            'description' : 'Which date(e.g. start_date, stop_date) is referential on the Business Process',
+            'type'        : 'string',
+            'mode'        : 'w' },
+    )
+    _categories = ( )

product/ERP5/tests/testBPMCore.py

@@ -2,6 +2,7 @@
 ##############################################################################
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
 #          Łukasz Nowak <luke@nexedi.com>
+#          Yusuke Muraoka <yusuke@nexedi.com>
 #
 # WARNING: This program as such is intended to be used by professional
 # programmers who take the whole responsibility of assessing all potential
@@ -1994,6 +1995,261 @@ class TestBPMImplementation(TestBPMMixin):
     self.assertEquals(node.getRelativeUrl(),
       business_path.getSource(context=context_movement, default='something'))
 
+  def test_BusinessState_getRemainingTradePhaseList(self):
+    """
+    This test case is described for what trade_phase is remaining after the state.
+    In this case, root explanation is path of between "b" and "d", and
+    path of between "a" and "b" has a condition which simulation state of
+    explanation must be "ordered" to pass the path. (*1)
+    But this test case will be passed the condition.
+
+                            (root explanation)
+       default/discount     default/invoicing     default/accounting
+    a ------------------ b ------------------- d -------------------- e
+       (cond="ordered")   \                   /
+                           \                 /
+          default/delivery  \               / default/payment
+                             \             /
+                              \           /
+                               \         /
+                                \       /
+                                 \     /
+                                  \   /
+                                   \ /
+                                    c
+    """
+    # define business process
+    business_process = self.createBusinessProcess()
+    business_path_a_b = self.createBusinessPath(business_process)
+    business_path_b_c = self.createBusinessPath(business_process)
+    business_path_b_d = self.createBusinessPath(business_process)
+    business_path_c_d = self.createBusinessPath(business_process)
+    business_path_d_e = self.createBusinessPath(business_process)
+    business_state_a = self.createBusinessState(business_process)
+    business_state_b = self.createBusinessState(business_process)
+    business_state_c = self.createBusinessState(business_process)
+    business_state_d = self.createBusinessState(business_process)
+    business_state_e = self.createBusinessState(business_process)
+    business_path_a_b.setPredecessorValue(business_state_a)
+    business_path_b_c.setPredecessorValue(business_state_b)
+    business_path_b_d.setPredecessorValue(business_state_b)
+    business_path_c_d.setPredecessorValue(business_state_c)
+    business_path_d_e.setPredecessorValue(business_state_d)
+    business_path_a_b.setSuccessorValue(business_state_b)
+    business_path_b_c.setSuccessorValue(business_state_c)
+    business_path_b_d.setSuccessorValue(business_state_d)
+    business_path_c_d.setSuccessorValue(business_state_d)
+    business_path_d_e.setSuccessorValue(business_state_e)
+
+    # set title for debug
+    business_path_a_b.edit(title="a_b")
+    business_path_b_c.edit(title="b_c")
+    business_path_b_d.edit(title="b_d")
+    business_path_c_d.edit(title="c_d")
+    business_path_d_e.edit(title="d_e")
+    business_state_a.edit(title="a")
+    business_state_b.edit(title="b")
+    business_state_c.edit(title="c")
+    business_state_d.edit(title="d")
+    business_state_e.edit(title="e")
+    
+    # set trade_phase
+    business_path_a_b.edit(trade_phase=['default/discount'],
+                           completed_state=['ordered']) # (*1)
+    business_path_b_c.edit(trade_phase=['default/delivery'])
+    business_path_b_d.edit(trade_phase=['default/invoicing'])
+    business_path_c_d.edit(trade_phase=['default/payment'])
+    business_path_d_e.edit(trade_phase=['default/accounting'])
+
+    # mock order
+    order = self.portal.sale_order_module.newContent(portal_type="Sale Order")
+    order_line = order.newContent(portal_type="Sale Order Line")
+
+    # make simulation
+    order.order()
+
+    self.stepTic()
+
+    applied_rule = order.getCausalityRelatedValue()
+    sm = applied_rule.contentValues(portal_type="Simulation Movement")[0]
+    sm.edit(causality_value=business_path_a_b)
+
+    # make other movements for each business path
+    applied_rule.newContent(portal_type="Simulation Movement",
+                            causality_value=business_path_b_c,
+                            order_value=order_line)
+    applied_rule.newContent(portal_type="Simulation Movement",
+                            causality_value=business_path_b_d,
+                            order_value=order_line)
+    applied_rule.newContent(portal_type="Simulation Movement",
+                            causality_value=business_path_c_d,
+                            order_value=order_line)
+    applied_rule.newContent(portal_type="Simulation Movement",
+                            causality_value=business_path_d_e,
+                            order_value=order_line)
+
+    self.stepTic()
+
+    trade_phase = self.portal.portal_categories.trade_phase.default
+
+    # assertion which getRemainingTradePhaseList must return category which will be passed
+    # discount is passed, business_path_a_b is already completed, because simulation state is "ordered"
+    self.assertEquals(set([trade_phase.delivery,
+                           trade_phase.invoicing,
+                           trade_phase.payment,
+                           trade_phase.accounting]),
+                      set(business_state_a.getRemainingTradePhaseList(order)))
+    self.assertEquals(set([trade_phase.delivery,
+                           trade_phase.invoicing,
+                           trade_phase.payment,
+                           trade_phase.accounting]),
+                      set(business_state_b.getRemainingTradePhaseList(order)))
+    self.assertEquals(set([trade_phase.payment,
+                           trade_phase.accounting]),
+                      set(business_state_c.getRemainingTradePhaseList(order)))
+    self.assertEquals(set([trade_phase.accounting]),
+                      set(business_state_d.getRemainingTradePhaseList(order)))
+
+    # when trade_phase_list is defined in arguments, the result is filtered by base category.
+    self.assertEquals(set([trade_phase.delivery,
+                           trade_phase.accounting]),
+                      set(business_state_a\
+                          .getRemainingTradePhaseList(order,
+                                                      trade_phase_list=['default/delivery',
+                                                                        'default/accounting'])))
+
+  def test_BusinessPath_calculateExpectedDate(self):
+    """
+    This test case is described for what start/stop date is expected on
+    each path by explanation.
+    In this case, root explanation is path of between "b" and "d", and
+    lead time and wait time is set on each path.
+    ("l" is lead time, "w" is wait_time)
+
+    Each path must calculate most early day from getting most longest
+    path in the simulation.
+
+    "referential_date" represents for which date have to get of explanation from reality.
+
+                  (root_explanation)
+        l:2, w:1         l:3, w:1       l:4, w:2
+    a ------------ b -------------- d -------------- e
+                    \             /
+                     \           /
+             l:2, w:1 \         / l:3, w:0
+                       \       /
+                        \     /
+                         \   /
+                          \ /
+                           c
+    """
+    # define business process
+    business_process = self.createBusinessProcess()
+    business_path_a_b = self.createBusinessPath(business_process)
+    business_path_b_c = self.createBusinessPath(business_process)
+    business_path_b_d = self.createBusinessPath(business_process)
+    business_path_c_d = self.createBusinessPath(business_process)
+    business_path_d_e = self.createBusinessPath(business_process)
+    business_state_a = self.createBusinessState(business_process)
+    business_state_b = self.createBusinessState(business_process)
+    business_state_c = self.createBusinessState(business_process)
+    business_state_d = self.createBusinessState(business_process)
+    business_state_e = self.createBusinessState(business_process)
+    business_path_a_b.setPredecessorValue(business_state_a)
+    business_path_b_c.setPredecessorValue(business_state_b)
+    business_path_b_d.setPredecessorValue(business_state_b)
+    business_path_c_d.setPredecessorValue(business_state_c)
+    business_path_d_e.setPredecessorValue(business_state_d)
+    business_path_a_b.setSuccessorValue(business_state_b)
+    business_path_b_c.setSuccessorValue(business_state_c)
+    business_path_b_d.setSuccessorValue(business_state_d)
+    business_path_c_d.setSuccessorValue(business_state_d)
+    business_path_d_e.setSuccessorValue(business_state_e)
+
+    business_process.edit(referential_date='stop_date')
+    business_state_a.edit(title='a')
+    business_state_b.edit(title='b')
+    business_state_c.edit(title='c')
+    business_state_d.edit(title='d')
+    business_state_e.edit(title='e')
+    business_path_a_b.edit(title='a_b', lead_time=2, wait_time=1)
+    business_path_b_c.edit(title='b_c', lead_time=2, wait_time=1)
+    business_path_b_d.edit(title='b_d', lead_time=3, wait_time=1)
+    business_path_c_d.edit(title='c_d', lead_time=3, wait_time=0)
+    business_path_d_e.edit(title='d_e', lead_time=4, wait_time=2)
+
+    # root explanation
+    business_path_b_d.edit(deliverable=True)
+    self.stepTic()
+
+    """
+    Basic test, lead time of reality and simulation are consistent.
+    """
+    class Mock:
+      def __init__(self, date):
+        self.date = date
+      def getStartDate(self):
+        return self.date
+      def getStopDate(self):
+        return self.date + 3 # lead time of reality
+
+    base_date = DateTime('2009/04/01 GMT+9')
+    mock = Mock(base_date)
+
+    # root explanation.
+    self.assertEquals(business_path_b_d.getExpectedStartDate(mock), DateTime('2009/04/01 GMT+9'))
+    self.assertEquals(business_path_b_d.getExpectedStopDate(mock), DateTime('2009/04/04 GMT+9'))
+
+    # assertion for each path without root explanation.
+    self.assertEquals(business_path_a_b.getExpectedStartDate(mock), DateTime('2009/03/27 GMT+9'))
+    self.assertEquals(business_path_a_b.getExpectedStopDate(mock), DateTime('2009/03/29 GMT+9'))
+    self.assertEquals(business_path_b_c.getExpectedStartDate(mock), DateTime('2009/03/30 GMT+9'))
+    self.assertEquals(business_path_b_c.getExpectedStopDate(mock), DateTime('2009/04/01 GMT+9'))
+    self.assertEquals(business_path_c_d.getExpectedStartDate(mock), DateTime('2009/04/01 GMT+9'))
+    self.assertEquals(business_path_c_d.getExpectedStopDate(mock), DateTime('2009/04/04 GMT+9'))
+    self.assertEquals(business_path_d_e.getExpectedStartDate(mock), DateTime('2009/04/06 GMT+9'))
+    self.assertEquals(business_path_d_e.getExpectedStopDate(mock), DateTime('2009/04/10 GMT+9'))
+
+    """
+    Test of illegal case, lead time of reality and simulation are inconsistent,
+    always reality is taken, but it depends on which date(e.g. start_date and stop_date) is referential.
+
+    How we know which is referential, currently implementation of it can be known by
+    BusinessProcess.isStartDateReferential and BusinessProcess.isStopDateReferential.
+
+    In this test case, stop_date on business_path_b_d is referential, because business_path_b_d is
+    root explanation and business_process refer to stop_date as referential.
+
+    calculation example(when referential date is 2009/04/06 GMT+9):
+    start_date of business_path_b_d = referential_date - 3(lead_time of business_path_b_d)
+                                    = 2009/04/06 GMT+9 - 3
+                                    = 2009/04/03 GMT+9
+    """
+    class Mock:
+      def __init__(self, date):
+        self.date = date
+      def getStartDate(self):
+        return self.date
+      def getStopDate(self):
+        return self.date + 5 # changed
+
+    base_date = DateTime('2009/04/01 GMT+9')
+    mock = Mock(base_date)
+
+    self.assertEquals(business_path_b_d.getExpectedStartDate(mock), DateTime('2009/04/03 GMT+9'))
+    # This is base in this context, because referential_date is 'stop_date'
+    self.assertEquals(business_path_b_d.getExpectedStopDate(mock), DateTime('2009/04/06 GMT+9'))
+
+    # assertion for each path without root explanation.
+    self.assertEquals(business_path_a_b.getExpectedStartDate(mock), DateTime('2009/03/29 GMT+9'))
+    self.assertEquals(business_path_a_b.getExpectedStopDate(mock), DateTime('2009/03/31 GMT+9'))
+    self.assertEquals(business_path_b_c.getExpectedStartDate(mock), DateTime('2009/04/01 GMT+9'))
+    self.assertEquals(business_path_b_c.getExpectedStopDate(mock), DateTime('2009/04/03 GMT+9'))
+    self.assertEquals(business_path_c_d.getExpectedStartDate(mock), DateTime('2009/04/03 GMT+9'))
+    self.assertEquals(business_path_c_d.getExpectedStopDate(mock), DateTime('2009/04/06 GMT+9'))
+    self.assertEquals(business_path_d_e.getExpectedStartDate(mock), DateTime('2009/04/08 GMT+9'))
+    self.assertEquals(business_path_d_e.getExpectedStopDate(mock), DateTime('2009/04/12 GMT+9'))
+
 def test_suite():
   suite = unittest.TestSuite()
   suite.addTest(unittest.makeSuite(TestBPMSale))