[hooks/security] provide attribute "add" permission As of today, the update permission on attributes is checked at entity *creation* time. This forbids using update permissions the proper way. We set it to be checked at entity update time only. We introduce a specific 'add' permission rule for attributes. For backward compatibility, its default value will be the same as the current 'update' permission. Notes: * needs a new yams version (ticket #149216) * introduces two new 'add_permissions' rdefs (attribute - group|rqlexpr) * if the update permission was () and the bw compat kicks in, the rule is not enforced, to avoid un-creatable entity types -- this restriction will be lifted when the bw compat is gone * small internal refactoring on check_entity_attributes * one small pre 3.6.1 bw compat snippet must be removed from schemaserial Closes #2965518.

from StringIO import StringIO
from logilab.common.testlib import TestCase, unittest_main
from cubicweb import dataimport
class UcsvreaderTC(TestCase):

    def test_empty_lines_skipped(self):
        stream = StringIO('''a,b,c,d,
1,2,3,4,
,,,,
,,,,
''')
        self.assertEqual([[u'a', u'b', u'c', u'd', u''],
                          [u'1', u'2', u'3', u'4', u''],
                          ],
                         list(dataimport.ucsvreader(stream)))
        stream.seek(0)
        self.assertEqual([[u'a', u'b', u'c', u'd', u''],
                          [u'1', u'2', u'3', u'4', u''],
                          [u'', u'', u'', u'', u''],
                          [u'', u'', u'', u'', u'']
                          ],
                         list(dataimport.ucsvreader(stream, skip_empty=False)))


if __name__ == '__main__':
    unittest_main()