# Copyright (c) Facebook, Inc. and its affiliates.
import unittest
from detectron2.config import get_cfg
from detectron2.export.c10 import Caffe2RPN
from detectron2.layers import ShapeSpec


class TestCaffe2RPN(unittest.TestCase):

    def test_instantiation(self):
        cfg = get_cfg()
        cfg.MODEL.RPN.BBOX_REG_WEIGHTS = (1, 1, 1, 1, 1)
        input_shapes = {'res4': ShapeSpec(channels=256, stride=4)}
        rpn = Caffe2RPN(cfg, input_shapes)
        assert rpn is not None
        cfg.MODEL.RPN.BBOX_REG_WEIGHTS = (10, 10, 5, 5, 1)
        with self.assertRaises(AssertionError):
            rpn = Caffe2RPN(cfg, input_shapes)