accounting_l10n_fr: Fixes for FEC

This change modifies the FEC export to conform to the test software from
https://www.economie.gouv.fr/dgfip/outil-test-des-fichiers-des-ecritures-comptables-fec 
/ https://github.com/DGFiP/Test-Compta-Demat.

A new `test_compta_demat_compatibility` to enable compatibility mode was introduced.
This will be True when rendering the report from the dialog, i.e., using `AccountingTransactionModule_viewFrenchAccountingTransactionFile` and False when
using `AccountingTransactionModule_viewFrenchAccountingTransactionFileActive` directly
so the behavior of reusing FEC export for accounting interfaces should be the same as before.


See merge request !1764

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransactionModule_aggregateFrenchAccountingTransactionFile.py

+# coding: utf-8
 from cStringIO import StringIO
 import zipfile
 from Products.ERP5Type.Message import translateString
@@ -11,11 +12,30 @@ result_list = active_process.getResultList()
 fec_file = context.AccountingTransactionModule_viewComptabiliteAsFECXML(
       at_date=at_date,
       result_list=result_list)
+if test_compta_demat_compatibility:
+  fec_file = (fec_file
+    # https://github.com/DGFiP/Test-Compta-Demat/issues/37
+    .replace(u"’", u"'")
+    .replace(u"Œ", u"OE")
+    .replace(u"œ", u"oe")
+    .replace(u"Ÿ", u"Y")
+    # https://github.com/DGFiP/Test-Compta-Demat/issues/39
+    .replace(u"€", u"EUR")
+)
 
 zipbuffer = StringIO()
 zipfilename = at_date.strftime('FEC-%Y%m%d.zip')
 zipfileobj = zipfile.ZipFile(zipbuffer, 'w', compression=zipfile.ZIP_DEFLATED)
-zipfileobj.writestr('FEC.xml', fec_file.encode('utf8'))
+filename = 'FEC.xml'
+if test_compta_demat_compatibility:
+  siren = ''
+  if section_uid_list:
+    siret_list = [b.getObject().getCorporateRegistrationCode() for b in portal.portal_catalog(uid=section_uid_list)]
+    siret_list = [siret for siret in siret_list if siret]
+    if len(siret_list) == 1:
+      siren = siret_list[0][:8]
+  filename = at_date.strftime('{siren}FEC%Y%m%d.xml').format(siren=siren)
+zipfileobj.writestr(filename, fec_file.encode('utf8'))
 zipfileobj.close()
 
 attachment_list = (

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransactionModule_aggregateFrenchAccountingTransactionFile.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>at_date, active_process, user_name</string> </value>
+            <value> <string>at_date, active_process, user_name, test_compta_demat_compatibility, section_uid_list</string> </value>
         </item>
         <item>
             <key> <string>_proxy_roles</string> </key>

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransactionModule_viewComptabiliteAsFECXML.zpt

 <?xml version="1.0" encoding="UTF-8"?>
-<comptabilite xmlns:tal="http://xml.zope.org/namespaces/tal">
+<comptabilite xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="formatA47A-I-VII-1.xsd" xmlns:tal="http://xml.zope.org/namespaces/tal">
   <exercice>
     <DateCloture tal:content="python: options['at_date'].strftime('%Y-%m-%d')">20141231</DateCloture>
     <tal:block tal:repeat="result options/result_list"><tal:block tal:replace="structure python: result.detail.decode('zlib')"/></tal:block>

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransactionModule_viewFrenchAccountingTransactionFile.py

@@ -29,7 +29,9 @@ context.activate().AccountingTransactionModule_viewFrenchAccountingTransactionFi
   tag=tag,
   aggregate_tag=aggregate_tag,
   date_column=date_column,
-  search_kw=search_kw)
+  search_kw=search_kw,
+  test_compta_demat_compatibility=True
+)
 
 return context.Base_redirect(form_id, keep_items=dict(
               portal_status_message=translateString("Report Started")))

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransactionModule_viewFrenchAccountingTransactionFileActive.py

@@ -88,7 +88,11 @@ for journal_code, journal_lib, journal_search_kw in _groupedJournalTupleDict():
 
   portal.portal_catalog.searchAndActivate(
     method_id='AccountingTransaction_postFECResult',
-    method_kw=dict(section_uid_list=section_uid_list, active_process=this_journal_active_process.getRelativeUrl()),
+    method_kw=dict(
+      section_uid_list=section_uid_list,
+      active_process=this_journal_active_process.getRelativeUrl(),
+      test_compta_demat_compatibility=test_compta_demat_compatibility,
+    ),
     activate_kw=dict(tag=tag, priority=priority),
     **journal_search_kw)
 
@@ -105,4 +109,7 @@ for journal_code, journal_lib, journal_search_kw in _groupedJournalTupleDict():
 context.activate(after_tag=(tag, aggregate_tag)).AccountingTransactionModule_aggregateFrenchAccountingTransactionFile(
   at_date,
   active_process.getRelativeUrl(),
-  user_name=user_name)
+  user_name=user_name,
+  test_compta_demat_compatibility=test_compta_demat_compatibility,
+  section_uid_list=section_uid_list,
+)

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransactionModule_viewFrenchAccountingTransactionFileActive.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>section_category, section_category_strict, from_date, at_date, group_by, simulation_state, ledger, user_name=None, tag=None, aggregate_tag=None, date_column=None, search_kw=None, **kw</string> </value>
+            <value> <string>section_category, section_category_strict, from_date, at_date, group_by, simulation_state, ledger, user_name=None, tag=None, aggregate_tag=None, date_column=None, search_kw=None, test_compta_demat_compatibility=False, **kw</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransaction_postFECResult.py

@@ -10,10 +10,12 @@ accounting_line_list = context.contentValues(portal_type=portal.getPortalAccount
 
 if context.getSourceSectionUid() in section_uid_list:
   if any([line.getSource(portal_type='Account') for line in accounting_line_list]):
-    source_xml = context.AccountingTransaction_viewAsSourceFECXML()
+    source_xml = context.AccountingTransaction_viewAsSourceFECXML(
+      test_compta_demat_compatibility=test_compta_demat_compatibility)
     active_process.postResult(ActiveResult(detail=source_xml.encode('utf8').encode('zlib')))
 
 if context.getDestinationSectionUid() in section_uid_list:
   if any([line.getDestination(portal_type='Account') for line in accounting_line_list]):
-    destination_xml = context.AccountingTransaction_viewAsDestinationFECXML()
+    destination_xml = context.AccountingTransaction_viewAsDestinationFECXML(
+      test_compta_demat_compatibility=test_compta_demat_compatibility)
     active_process.postResult(ActiveResult(detail=destination_xml.encode('utf8').encode('zlib')))

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransaction_postFECResult.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>active_process, section_uid_list</string> </value>
+            <value> <string>active_process, section_uid_list, test_compta_demat_compatibility</string> </value>
         </item>
         <item>
             <key> <string>_proxy_roles</string> </key>

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransaction_viewAsDestinationFECXML.zpt

@@ -2,13 +2,14 @@
   <EcritureNum tal:content="context/getDestinationReference">Specific Reference</EcritureNum>
   <EcritureDate tal:content="python: context.getStopDate().strftime('%Y-%m-%d')">Specific Date</EcritureDate>
   <EcritureLib tal:content="context/getTitle">Title</EcritureLib>
-  <PieceRef tal:content="context/getReference">Reference</PieceRef>
+  <PieceRef tal:content="python: (context.getReference() or context.getDestinationReference() if options['test_compta_demat_compatibility'] else context.getReference())">Reference</PieceRef>
   <PieceDate tal:content="python: context.getStopDate().strftime('%Y-%m-%d')"></PieceDate>
   <tal:block tal:replace="nothing"><EcritureLet></EcritureLet>
   <DateLet></DateLet></tal:block>
   <ValidDate tal:content="python: context.AccountingTransaction_getDeliverDate().strftime('%Y-%m-%d')">Modification Date</ValidDate>
   <tal:block tal:repeat="line python:context.contentValues(portal_type=context.getPortalAccountingMovementTypeList())"><ligne
-    tal:define="account python:line.getDestinationValue(portal_type='Account')" tal:condition="python: account is not None">
+    tal:define="account python:line.getDestinationValue(portal_type='Account')"
+    tal:condition="python: account is not None and (line.getQuantity() or line.getDestinationAssetDebit() or line.getDestinationAssetCredit() or not options['test_compta_demat_compatibility'])">
       <CompteNum tal:content="account/Account_getGapId">Reference Compte (Account_getGapId)</CompteNum>
       <CompteLib tal:content="line/Movement_getDestinationCompteLib">Translated Title Compte</CompteLib>
       <tal:block tal:condition="python: account.getAccountType() in ('asset/receivable', 'liability/payable')"

bt5/erp5_accounting_l10n_fr/SkinTemplateItem/portal_skins/erp5_accounting_l10n_fr/AccountingTransaction_viewAsSourceFECXML.zpt

@@ -2,13 +2,14 @@
   <EcritureNum tal:content="context/getSourceReference">Specific Reference</EcritureNum>
   <EcritureDate tal:content="python: context.getStartDate().strftime('%Y-%m-%d')">Specific Date</EcritureDate>
   <EcritureLib tal:content="context/getTitle">Title</EcritureLib>
-  <PieceRef tal:content="context/getReference">Reference</PieceRef>
+  <PieceRef tal:content="python: (context.getReference() or context.getSourceReference() if options['test_compta_demat_compatibility'] else context.getReference())">Reference</PieceRef>
   <PieceDate tal:content="python: context.getStartDate().strftime('%Y-%m-%d')"></PieceDate>
   <tal:block tal:replace="nothing"><EcritureLet></EcritureLet>
   <DateLet></DateLet></tal:block>
   <ValidDate tal:content="python: context.AccountingTransaction_getDeliverDate().strftime('%Y-%m-%d')">Modification Date</ValidDate>
   <tal:block tal:repeat="line python:context.contentValues(portal_type=context.getPortalAccountingMovementTypeList())"><ligne
-    tal:define="account python:line.getSourceValue(portal_type='Account')" tal:condition="python: account is not None">
+    tal:define="account python:line.getSourceValue(portal_type='Account')"
+    tal:condition="python: account is not None and (line.getQuantity() or line.getSourceAssetDebit() or line.getSourceAssetCredit() or not options['test_compta_demat_compatibility'])">
       <CompteNum tal:content="account/Account_getGapId">Reference Compte (Account_getGapId)</CompteNum>
       <CompteLib tal:content="line/Movement_getSourceCompteLib">Translated Title Compte</CompteLib>
       <tal:block tal:condition="python: account.getAccountType() in ('asset/receivable', 'liability/payable')"

bt5/erp5_accounting_l10n_fr/TestTemplateItem/portal_components/test.erp5.testAccounting_l10n_fr.py

@@ -56,6 +56,13 @@ class TestAccounting_l10n_fr(AccountingTestCase):
 
   def afterSetUp(self):
     AccountingTestCase.afterSetUp(self)
+    # set a corporate registration code (siret) on our section organisation
+    # > Le numéro SIRET (ou système d'identification du répertoire des
+    # > établissements) identifie chaque établissement de l'entreprise.
+    # > Il se compose de 14 chiffres : les neuf chiffres du numéro SIREN +
+    # > les cinq chiffres correspondant à un numéro NIC (numéro interne de
+    # > classement).
+    self.section.setCorporateRegistrationCode('12345689 12345')
     # set a french gap on test accounts
     account_module = self.portal.account_module
     account_module.payable.setGap('fr/pcg/4/40/401')
@@ -90,6 +97,42 @@ class TestAccounting_l10n_fr(AccountingTestCase):
     user = uf.getUser(self.username).__of__(uf)
     newSecurityManager(None, user)
 
+  def validateFECXML(self, tree):
+    # this "xsi:noNamespaceSchemaLocation" is used by xerces parser from
+    # https://github.com/DGFiP/Test-Compta-Demat/
+    noNamespaceSchemaLocation, = tree.xpath(
+      './@xsi:noNamespaceSchemaLocation',
+      namespaces={'xsi': 'http://www.w3.org/2001/XMLSchema-instance'})
+
+    import Products.ERP5.tests
+    with open(os.path.join(
+        os.path.dirname(Products.ERP5.tests.__file__),
+        'test_data',
+        noNamespaceSchemaLocation,
+    )) as f:
+      xmlschema_doc = etree.parse(f)
+      xmlschema = etree.XMLSchema(xmlschema_doc)
+
+    self.assertFalse(xmlschema.validate(etree.fromstring('<invalide/>')))
+    xmlschema.assertValid(tree)
+
+  def getFECFromMailMessage(self):
+    last_message = self.portal.MailHost._last_message
+    self.assertNotEqual((), last_message)
+    _, mto, message_text = last_message
+    self.assertEqual('"%s" <%s>' % (self.first_name, self.recipient_email_address), mto[0])
+    mail_message = email.message_from_string(message_text)
+    for part in mail_message.walk():
+      content_type = part.get_content_type()
+      file_name = part.get_filename()
+      if file_name == 'FEC-20141231.zip':
+        self.assertEqual('application/zip', content_type)
+        data = part.get_payload(decode=True)
+        zf = zipfile.ZipFile(StringIO(data))
+        self.assertIn("12345689FEC20141231.xml", zf.namelist())
+        return zf.open("12345689FEC20141231.xml").read()
+    self.fail("Attachment not found")
+
   def test_FEC(self):
     account_module = self.portal.account_module
     self._makeOne(
@@ -127,32 +170,10 @@ class TestAccounting_l10n_fr(AccountingTestCase):
         simulation_state=['delivered'])
     self.tic()
 
-    fec_xml = ''
-    last_message = self.portal.MailHost._last_message
-    self.assertNotEqual((), last_message)
-    _, mto, message_text = last_message
-    self.assertEqual('"%s" <%s>' % (self.first_name, self.recipient_email_address), mto[0])
-    mail_message = email.message_from_string(message_text)
-    for part in mail_message.walk():
-      content_type = part.get_content_type()
-      file_name = part.get_filename()
-      if file_name == 'FEC-20141231.zip':
-        self.assertEqual('application/zip', content_type)
-        data = part.get_payload(decode=True)
-        zf = zipfile.ZipFile(StringIO(data))
-        fec_xml = zf.open("FEC.xml").read()
-        break
-    else:
-      self.fail("Attachment not found")
-
-    # validate against official schema
-    import Products.ERP5.tests
-    schema = etree.XMLSchema(etree.XML(open(os.path.join(
-        os.path.dirname(Products.ERP5.tests.__file__), 'test_data',
-        'formatA47A-I-VII-1.xsd')).read()))
+    fec_xml = self.getFECFromMailMessage()
 
-    # this raise if invalid
-    tree = etree.fromstring(fec_xml, etree.XMLParser(schema=schema))
+    tree = etree.fromstring(fec_xml)
+    self.validateFECXML(tree)
 
     debit_list = tree.xpath("//Debit")
     self.assertEqual(6, len(debit_list))
@@ -220,33 +241,8 @@ class TestAccounting_l10n_fr(AccountingTestCase):
         ledger=ledger_list)
     self.tic()
 
-    fec_xml = ''
-    last_message = self.portal.MailHost._last_message
-    self.assertNotEqual((), last_message)
-    _, mto, message_text = last_message
-    self.assertEqual('"%s" <%s>' % (self.first_name, self.recipient_email_address), mto[0])
-    mail_message = email.message_from_string(message_text)
-    for part in mail_message.walk():
-      content_type = part.get_content_type()
-      file_name = part.get_filename()
-      if file_name == 'FEC-20141231.zip':
-        self.assertEqual('application/zip', content_type)
-        data = part.get_payload(decode=True)
-        zf = zipfile.ZipFile(StringIO(data))
-        fec_xml = zf.open("FEC.xml").read()
-        break
-    else:
-      self.fail("Attachment not found")
-
-    # validate against official schema
-    import Products.ERP5.tests
-    schema = etree.XMLSchema(etree.XML(open(os.path.join(
-        os.path.dirname(Products.ERP5.tests.__file__), 'test_data',
-        'formatA47A-I-VII-1.xsd')).read()))
-
-    # this raise if invalid
-    tree = etree.fromstring(fec_xml, etree.XMLParser(schema=schema))
-
+    tree = etree.fromstring(self.getFECFromMailMessage())
+    self.validateFECXML(tree)
     return tree
 
   def test_FECWithOneLedger(self):
@@ -425,11 +421,171 @@ class TestAccounting_l10n_fr(AccountingTestCase):
     assert invoice.workflow_history['accounting_workflow'][-1]['action'] == 'deliver'
     invoice.workflow_history['accounting_workflow'][-1]['time'] = DateTime(2001, 2, 3)
 
-    tree = etree.fromstring(invoice.AccountingTransaction_viewAsSourceFECXML())
+    tree = etree.fromstring(
+      invoice.AccountingTransaction_viewAsSourceFECXML(
+        test_compta_demat_compatibility=True))
     self.assertEqual(tree.xpath('//ValidDate/text()'), ['2001-02-03'])
-    tree = etree.fromstring(invoice.AccountingTransaction_viewAsDestinationFECXML())
+    tree = etree.fromstring(
+      invoice.AccountingTransaction_viewAsDestinationFECXML(
+        test_compta_demat_compatibility=True))
     self.assertEqual(tree.xpath('//ValidDate/text()'), ['2001-02-03'])
 
+  def test_EscapeTestComptaDematUnsupportedCharacters(self):
+    # Workaround bugs with Test Compta Demat
+    # https://github.com/DGFiP/Test-Compta-Demat/issues/37
+    # https://github.com/DGFiP/Test-Compta-Demat/issues/39
+
+    account_module = self.portal.account_module
+    self._makeOne(
+      portal_type='Purchase Invoice Transaction',
+      title='Des œufs, des Œufs, des Ÿ et des €',
+      simulation_state='delivered',
+      reference='1',
+      source_section_value=self.organisation_module.supplier,
+      stop_date=DateTime(2014, 2, 2),
+      lines=(
+        dict(
+          destination_value=account_module.payable, destination_debit=132.00),
+        dict(
+          destination_value=account_module.refundable_vat,
+          destination_credit=22.00),
+        dict(
+          destination_value=account_module.goods_purchase,
+          destination_credit=110.00)))
+    self.tic()
+    self.portal.accounting_module.AccountingTransactionModule_viewFrenchAccountingTransactionFile(
+      section_category='group/demo_group',
+      section_category_strict=False,
+      at_date=DateTime(2014, 12, 31),
+      simulation_state=['delivered'])
+    self.tic()
+
+    tree = etree.fromstring(self.getFECFromMailMessage())
+    self.validateFECXML(tree)
+    self.assertEqual(
+      tree.xpath('//EcritureLib/text()'),
+      [u'Des oeufs, des OEufs, des Y et des EUR'])
+
+  def test_Skip0QuantityLines(self):
+    # Don't include lines with 0 quantity in the output, because they are
+    # reported as invalid by Test Compta Demat
+    account_module = self.portal.account_module
+    destination_invoice = self._makeOne(
+      portal_type='Purchase Invoice Transaction',
+      title='destination 0',
+      simulation_state='delivered',
+      reference='destination',
+      source_section_value=self.organisation_module.supplier,
+      stop_date=DateTime(2014, 2, 2),
+      lines=(
+        dict(
+          destination_value=account_module.payable, destination_debit=132.00),
+        dict(
+          destination_value=account_module.refundable_vat,
+          destination_credit=22.00),
+        dict(
+          destination_value=account_module.refundable_vat,
+          destination_credit=0.00),
+        dict(
+          destination_value=account_module.goods_purchase,
+          destination_credit=110.00)))
+
+    self._makeOne(
+      portal_type='Sale Invoice Transaction',
+      title='source 0',
+      simulation_state='delivered',
+      reference='source',
+      destination_section_value=self.organisation_module.client_2,
+      start_date=DateTime(2014, 3, 1),
+      lines=(
+        dict(source_value=account_module.receivable, source_debit=240.00),
+        dict(source_value=account_module.collected_vat, source_credit=0.00),
+        dict(source_value=account_module.collected_vat, source_credit=40.00),
+        dict(source_value=account_module.goods_sales, source_credit=200.00)))
+
+    self.tic()
+    # make sure we don't have interaction removing the lines
+    self.assertEqual(
+      sorted(
+        [
+          (line.getDestinationDebit(), line.getSourceDebit())
+          for line in destination_invoice.contentValues()
+        ]), [
+          (0.0, 0.0),
+          (0.0, 22.0),
+          (0.0, 110.0),
+          (132.0, 0.0),
+        ])
+    self.portal.accounting_module.AccountingTransactionModule_viewFrenchAccountingTransactionFile(
+      section_category='group/demo_group',
+      section_category_strict=False,
+      at_date=DateTime(2014, 12, 31),
+      simulation_state=['delivered'])
+    self.tic()
+
+    tree = etree.fromstring(self.getFECFromMailMessage())
+    self.validateFECXML(tree)
+    self.assertEqual(
+      tree.xpath(
+        '//ecriture/PieceRef[text()="destination"]/../ligne/Debit/text()'),
+      ['132.00', '0.00', '0.00'])
+    self.assertEqual(
+      tree.xpath(
+        '//ecriture/PieceRef[text()="destination"]/../ligne/Credit/text()'),
+      ['0.00', '22.00', '110.00'])
+    self.assertEqual(
+      tree.xpath('//ecriture/PieceRef[text()="source"]/../ligne/Debit/text()'),
+      ['240.00', '0.00', '0.00'])
+    self.assertEqual(
+      tree.xpath(
+        '//ecriture/PieceRef[text()="source"]/../ligne/Credit/text()'),
+      ['0.00', '40.00', '200.00'])
+
+  def test_PieceRefDefaultValue(self):
+    account_module = self.portal.account_module
+    invoice = self._makeOne(
+      portal_type='Purchase Invoice Transaction',
+      title='Première Écriture',
+      simulation_state='delivered',
+      source_section_value=self.organisation_module.supplier,
+      stop_date=DateTime(2014, 2, 2),
+      lines=(
+        dict(
+          destination_value=account_module.payable, destination_debit=132.00),
+        dict(
+          destination_value=account_module.refundable_vat,
+          destination_credit=22.00),
+        dict(
+          destination_value=account_module.goods_purchase,
+          destination_credit=110.00)))
+
+    invoice.setSourceReference('source_reference')
+    invoice.setDestinationReference('destination_reference')
+    tree = etree.fromstring(
+      invoice.AccountingTransaction_viewAsSourceFECXML(
+        test_compta_demat_compatibility=True))
+    self.assertEqual(tree.xpath('//EcritureNum/text()'), ['source_reference'])
+    self.assertEqual(tree.xpath('//PieceRef/text()'), ['source_reference'])
+    tree = etree.fromstring(
+      invoice.AccountingTransaction_viewAsDestinationFECXML(
+        test_compta_demat_compatibility=True))
+    self.assertEqual(
+      tree.xpath('//EcritureNum/text()'), ['destination_reference'])
+    self.assertEqual(
+      tree.xpath('//PieceRef/text()'), ['destination_reference'])
+
+    tree = etree.fromstring(
+      invoice.AccountingTransaction_viewAsSourceFECXML(
+        test_compta_demat_compatibility=False))
+    self.assertEqual(tree.xpath('//EcritureNum/text()'), ['source_reference'])
+    self.assertEqual([n.text for n in tree.xpath('//PieceRef')], [None])
+    tree = etree.fromstring(
+      invoice.AccountingTransaction_viewAsDestinationFECXML(
+        test_compta_demat_compatibility=False))
+    self.assertEqual(
+      tree.xpath('//EcritureNum/text()'), ['destination_reference'])
+    self.assertEqual([n.text for n in tree.xpath('//PieceRef')], [None])
+
 
 def test_suite():
   suite = unittest.TestSuite()