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#!/usr/bin/env python
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import os
import tempfile
import unittest
import torch
from detectron2.config import configurable, downgrade_config, get_cfg, upgrade_config
from detectron2.layers import ShapeSpec
_V0_CFG = """
MODEL:
RPN_HEAD:
NAME: "TEST"
VERSION: 0
"""
_V1_CFG = """
MODEL:
WEIGHT: "/path/to/weight"
"""
class TestConfigVersioning(unittest.TestCase):
def test_upgrade_downgrade_consistency(self):
cfg = get_cfg()
# check that custom is preserved
cfg.USER_CUSTOM = 1
down = downgrade_config(cfg, to_version=0)
up = upgrade_config(down)
self.assertTrue(up == cfg)
def _merge_cfg_str(self, cfg, merge_str):
f = tempfile.NamedTemporaryFile(mode="w", suffix=".yaml", delete=False)
try:
f.write(merge_str)
f.close()
cfg.merge_from_file(f.name)
finally:
os.remove(f.name)
return cfg
def test_auto_upgrade(self):
cfg = get_cfg()
latest_ver = cfg.VERSION
cfg.USER_CUSTOM = 1
self._merge_cfg_str(cfg, _V0_CFG)
self.assertEqual(cfg.MODEL.RPN.HEAD_NAME, "TEST")
self.assertEqual(cfg.VERSION, latest_ver)
def test_guess_v1(self):
cfg = get_cfg()
latest_ver = cfg.VERSION
self._merge_cfg_str(cfg, _V1_CFG)
self.assertEqual(cfg.VERSION, latest_ver)
class _TestClassA(torch.nn.Module):
@configurable
def __init__(self, arg1, arg2, arg3=3):
super().__init__()
self.arg1 = arg1
self.arg2 = arg2
self.arg3 = arg3
assert arg1 == 1
assert arg2 == 2
assert arg3 == 3
@classmethod
def from_config(cls, cfg):
args = {"arg1": cfg.ARG1, "arg2": cfg.ARG2}
return args
class _TestClassB(_TestClassA):
@configurable
def __init__(self, input_shape, arg1, arg2, arg3=3):
"""
Doc of _TestClassB
"""
assert input_shape == "shape"
super().__init__(arg1, arg2, arg3)
@classmethod
def from_config(cls, cfg, input_shape): # test extra positional arg in from_config
args = {"arg1": cfg.ARG1, "arg2": cfg.ARG2}
args["input_shape"] = input_shape
return args
class _LegacySubClass(_TestClassB):
# an old subclass written in cfg style
def __init__(self, cfg, input_shape, arg4=4):
super().__init__(cfg, input_shape)
assert self.arg1 == 1
assert self.arg2 == 2
assert self.arg3 == 3
class _NewSubClassNewInit(_TestClassB):
# test new subclass with a new __init__
@configurable
def __init__(self, input_shape, arg4=4, **kwargs):
super().__init__(input_shape, **kwargs)
assert self.arg1 == 1
assert self.arg2 == 2
assert self.arg3 == 3
class _LegacySubClassNotCfg(_TestClassB):
# an old subclass written in cfg style, but argument is not called "cfg"
def __init__(self, config, input_shape):
super().__init__(config, input_shape)
assert self.arg1 == 1
assert self.arg2 == 2
assert self.arg3 == 3
class _TestClassC(_TestClassB):
@classmethod
def from_config(cls, cfg, input_shape, **kwargs): # test extra kwarg overwrite
args = {"arg1": cfg.ARG1, "arg2": cfg.ARG2}
args["input_shape"] = input_shape
args.update(kwargs)
return args
class _TestClassD(_TestClassA):
@configurable
def __init__(self, input_shape: ShapeSpec, arg1: int, arg2, arg3=3):
assert input_shape == "shape"
super().__init__(arg1, arg2, arg3)
# _TestClassA.from_config does not have input_shape args.
# Test whether input_shape will be forwarded to __init__
class TestConfigurable(unittest.TestCase):
def testInitWithArgs(self):
_ = _TestClassA(arg1=1, arg2=2, arg3=3)
_ = _TestClassB("shape", arg1=1, arg2=2)
_ = _TestClassC("shape", arg1=1, arg2=2)
_ = _TestClassD("shape", arg1=1, arg2=2, arg3=3)
def testPatchedAttr(self):
self.assertTrue("Doc" in _TestClassB.__init__.__doc__)
self.assertEqual(_TestClassD.__init__.__annotations__["arg1"], int)
def testInitWithCfg(self):
cfg = get_cfg()
cfg.ARG1 = 1
cfg.ARG2 = 2
cfg.ARG3 = 3
_ = _TestClassA(cfg)
_ = _TestClassB(cfg, input_shape="shape")
_ = _TestClassC(cfg, input_shape="shape")
_ = _TestClassD(cfg, input_shape="shape")
_ = _LegacySubClass(cfg, input_shape="shape")
_ = _NewSubClassNewInit(cfg, input_shape="shape")
_ = _LegacySubClassNotCfg(cfg, input_shape="shape")
with self.assertRaises(TypeError):
# disallow forwarding positional args to __init__ since it's prone to errors
_ = _TestClassD(cfg, "shape")
# call with kwargs instead
_ = _TestClassA(cfg=cfg)
_ = _TestClassB(cfg=cfg, input_shape="shape")
_ = _TestClassC(cfg=cfg, input_shape="shape")
_ = _TestClassD(cfg=cfg, input_shape="shape")
_ = _LegacySubClass(cfg=cfg, input_shape="shape")
_ = _NewSubClassNewInit(cfg=cfg, input_shape="shape")
_ = _LegacySubClassNotCfg(config=cfg, input_shape="shape")
def testInitWithCfgOverwrite(self):
cfg = get_cfg()
cfg.ARG1 = 1
cfg.ARG2 = 999 # wrong config
with self.assertRaises(AssertionError):
_ = _TestClassA(cfg, arg3=3)
# overwrite arg2 with correct config later:
_ = _TestClassA(cfg, arg2=2, arg3=3)
_ = _TestClassB(cfg, input_shape="shape", arg2=2, arg3=3)
_ = _TestClassC(cfg, input_shape="shape", arg2=2, arg3=3)
_ = _TestClassD(cfg, input_shape="shape", arg2=2, arg3=3)
# call with kwargs cfg=cfg instead
_ = _TestClassA(cfg=cfg, arg2=2, arg3=3)
_ = _TestClassB(cfg=cfg, input_shape="shape", arg2=2, arg3=3)
_ = _TestClassC(cfg=cfg, input_shape="shape", arg2=2, arg3=3)
_ = _TestClassD(cfg=cfg, input_shape="shape", arg2=2, arg3=3)
def testInitWithCfgWrongArgs(self):
cfg = get_cfg()
cfg.ARG1 = 1
cfg.ARG2 = 2
with self.assertRaises(TypeError):
_ = _TestClassB(cfg, "shape", not_exist=1)
with self.assertRaises(TypeError):
_ = _TestClassC(cfg, "shape", not_exist=1)
with self.assertRaises(TypeError):
_ = _TestClassD(cfg, "shape", not_exist=1)
def testBadClass(self):
class _BadClass1:
@configurable
def __init__(self, a=1, b=2):
pass
class _BadClass2:
@configurable
def __init__(self, a=1, b=2):
pass
def from_config(self, cfg): # noqa
pass
class _BadClass3:
@configurable
def __init__(self, a=1, b=2):
pass
# bad name: must be cfg
@classmethod
def from_config(cls, config): # noqa
pass
with self.assertRaises(AttributeError):
_ = _BadClass1(a=1)
with self.assertRaises(TypeError):
_ = _BadClass2(a=1)
with self.assertRaises(TypeError):
_ = _BadClass3(get_cfg())
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