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# Copyright (c) Facebook, Inc. and its affiliates.
import unittest
import torch
from detectron2.modeling.meta_arch import GeneralizedRCNN
from detectron2.utils.registry import _convert_target_to_string, locate
class A:
class B:
pass
class TestLocate(unittest.TestCase):
def _test_obj(self, obj):
name = _convert_target_to_string(obj)
newobj = locate(name)
self.assertIs(obj, newobj)
def test_basic(self):
self._test_obj(GeneralizedRCNN)
def test_inside_class(self):
# requires using __qualname__ instead of __name__
self._test_obj(A.B)
def test_builtin(self):
self._test_obj(len)
self._test_obj(dict)
def test_pytorch_optim(self):
# pydoc.locate does not work for it
self._test_obj(torch.optim.SGD)
def test_failure(self):
with self.assertRaises(ImportError):
locate("asdf")
def test_compress_target(self):
from detectron2.data.transforms import RandomCrop
name = _convert_target_to_string(RandomCrop)
# name shouldn't contain 'augmentation_impl'
self.assertEqual(name, "detectron2.data.transforms.RandomCrop")
self.assertIs(RandomCrop, locate(name))
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