Fix type error in ERP5ReportTestCase.getReportSectionList

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43496 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/tests/ERP5TypeTestCase.py

@@ -1154,7 +1154,7 @@ class ERP5ReportTestCase(ERP5TypeTestCase):
     report_method = getattr(report, 'report_method', None)
     if report_method:
       return getattr(context, report_method)()
-    return sum([field.render()
+    return sum([list(field.render())
                 for field in report.get_fields()
                 if field.getRecursiveTemplateField().meta_type == 'ReportBox'],
                [])