def METHOD_NAME(self):
    # Single unit should have no consistency check
    self.edit_unit("Hello, world!\n", "Nazdar svete!\n")
    unit = self.get_unit()
    self.assertEqual(unit.all_checks_names, set())
    # Add linked project
    other = self.create_link_existing()
    # Now the inconsistent check should be there
    unit = self.get_unit()
    self.assertEqual(unit.all_checks_names, {"inconsistent"})
    return other