test_model_low_level_container.py 文件源码

def _test_fields(self, init_fields=[], push_fields=[]):
        all_fields = init_fields + push_fields
        container = self.get_default_container(fields=init_fields, fuzzable=True)
        for f in push_fields:
            container.push(f)
            if isinstance(f, Container):
                # default is to pop the container immediatly in the tests...
                container.pop()
        fields_num_mutations = sum(f.num_mutations() for f in all_fields)
        container_num_mutations = container.num_mutations()
        self.assertEqual(fields_num_mutations, container_num_mutations)

        field_default_values = []
        for f in all_fields:
            field_default_values.append(f.render())
        fields_mutations = []
        for i, field in enumerate(all_fields):
            prefix = sum(field_default_values[:i])
            postfix = sum(field_default_values[i + 1:])
            if prefix == 0:
                prefix = Bits()
            if postfix == 0:
                postfix = Bits()
            while field.mutate():
                fields_mutations.append(prefix + field.render() + postfix)
            field.reset()
        container_mutations = self.get_all_mutations(container)
        self.assertListEqual(fields_mutations, container_mutations)