ERP5Workflow: use Workflow Test Document for permission test instead of Text

they don't require another bt to be installed and they are here for this purpose

bt5/erp5_workflow_test/TestTemplateItem/portal_components/test.erp5.testWorkflowAndDCWorkflow.py

@@ -222,8 +222,7 @@ class TestConvertedWorkflow(TestERP5WorkflowMixin):
     portal_workflow = self.portal.portal_workflow
 
     self.logMessage("    Save portal type original configuration")
-    text_portal_type = self.portal.portal_types._getOb('Text')
-    original_portal_type_workflow = text_portal_type.getTypeWorkflowList()
+    text_portal_type = self.portal.portal_types._getOb('Workflow Test Document')
     temporary_workflow_id = 'temporary_edit_workflow'
 
     self.copyWorkflow(portal_workflow, 'edit_workflow',
@@ -234,9 +233,9 @@ class TestConvertedWorkflow(TestERP5WorkflowMixin):
     permission = 'View management screens'
     permission_key = '_' + permission.replace(' ', '_') + '_Permission'
 
-    self.logMessage("    Create a text document: it will have the usual permissions"
-                    + " defined by edit_workflow")
-    text_document = self.portal.document_module.newContent(portal_type='Text')
+    self.logMessage("    Create a Workflow Test document: it will have the usual"
+                    + " permissions defined by edit_workflow")
+    text_document = self.getTestObject()
 
     self.logMessage("    Verify that the permission '" + permission + "' is not " +
                     "declared on the text document yet")
@@ -286,9 +285,7 @@ class TestConvertedWorkflow(TestERP5WorkflowMixin):
     self.assertEqual(getattr(text_document, permission_key), ['Assignor'])
 
     self.logMessage("    Restore original configuration")
-    text_portal_type.setTypeWorkflowList(original_portal_type_workflow)
     portal_workflow.manage_delObjects(temporary_workflow_id)
-    self.portal.document_module.manage_delObjects(text_document.getId())
 
 class TestDCWorkflow(TestERP5WorkflowMixin):
   """