'Match first level, fail to match second level'

def test_recursive_nomatch(self):

    f = {'name': 'f0', 'string': 'My    Field', 'fields': [{'name': 'f0', 'string': 'Sub    field    0', 'fields': []}, {'name': 'f1', 'string': 'Sub    field    2', 'fields': []}]}
    match = self.env['base_import.import']._match_header('f0/f2', [f], {})
    self.assertEqual(match, [])
