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import logging
import tempfile
from unittest.mock import MagicMock, patch
import mmcv.runner
import pytest
import torch
import torch.nn as nn
from mmcv.runner import obj_from_dict
from torch.utils.data import DataLoader, Dataset
from mmseg.apis import single_gpu_test
from mmseg.core import DistEvalHook, EvalHook
class ExampleDataset(Dataset):
def __getitem__(self, idx):
results = dict(img=torch.tensor([1]), img_metas=dict())
return results
def __len__(self):
return 1
class ExampleModel(nn.Module):
def __init__(self):
super(ExampleModel, self).__init__()
self.test_cfg = None
self.conv = nn.Conv2d(3, 3, 3)
def forward(self, img, img_metas, test_mode=False, **kwargs):
return img
def train_step(self, data_batch, optimizer):
loss = self.forward(**data_batch)
return dict(loss=loss)
def test_iter_eval_hook():
with pytest.raises(TypeError):
test_dataset = ExampleModel()
data_loader = [
DataLoader(
test_dataset,
batch_size=1,
sampler=None,
num_worker=0,
shuffle=False)
]
EvalHook(data_loader)
test_dataset = ExampleDataset()
test_dataset.evaluate = MagicMock(return_value=dict(test='success'))
loader = DataLoader(test_dataset, batch_size=1)
model = ExampleModel()
data_loader = DataLoader(
test_dataset, batch_size=1, sampler=None, num_workers=0, shuffle=False)
optim_cfg = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer = obj_from_dict(optim_cfg, torch.optim,
dict(params=model.parameters()))
# test EvalHook
with tempfile.TemporaryDirectory() as tmpdir:
eval_hook = EvalHook(data_loader)
runner = mmcv.runner.IterBasedRunner(
model=model,
optimizer=optimizer,
work_dir=tmpdir,
logger=logging.getLogger())
runner.register_hook(eval_hook)
runner.run([loader], [('train', 1)], 1)
test_dataset.evaluate.assert_called_with([torch.tensor([1])],
logger=runner.logger)
def test_epoch_eval_hook():
with pytest.raises(TypeError):
test_dataset = ExampleModel()
data_loader = [
DataLoader(
test_dataset,
batch_size=1,
sampler=None,
num_worker=0,
shuffle=False)
]
EvalHook(data_loader, by_epoch=True)
test_dataset = ExampleDataset()
test_dataset.evaluate = MagicMock(return_value=dict(test='success'))
loader = DataLoader(test_dataset, batch_size=1)
model = ExampleModel()
data_loader = DataLoader(
test_dataset, batch_size=1, sampler=None, num_workers=0, shuffle=False)
optim_cfg = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer = obj_from_dict(optim_cfg, torch.optim,
dict(params=model.parameters()))
# test EvalHook with interval
with tempfile.TemporaryDirectory() as tmpdir:
eval_hook = EvalHook(data_loader, by_epoch=True, interval=2)
runner = mmcv.runner.EpochBasedRunner(
model=model,
optimizer=optimizer,
work_dir=tmpdir,
logger=logging.getLogger())
runner.register_hook(eval_hook)
runner.run([loader], [('train', 1)], 2)
test_dataset.evaluate.assert_called_once_with([torch.tensor([1])],
logger=runner.logger)
def multi_gpu_test(model, data_loader, tmpdir=None, gpu_collect=False):
results = single_gpu_test(model, data_loader)
return results
@patch('mmseg.apis.multi_gpu_test', multi_gpu_test)
def test_dist_eval_hook():
with pytest.raises(TypeError):
test_dataset = ExampleModel()
data_loader = [
DataLoader(
test_dataset,
batch_size=1,
sampler=None,
num_worker=0,
shuffle=False)
]
DistEvalHook(data_loader)
test_dataset = ExampleDataset()
test_dataset.evaluate = MagicMock(return_value=dict(test='success'))
loader = DataLoader(test_dataset, batch_size=1)
model = ExampleModel()
data_loader = DataLoader(
test_dataset, batch_size=1, sampler=None, num_workers=0, shuffle=False)
optim_cfg = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer = obj_from_dict(optim_cfg, torch.optim,
dict(params=model.parameters()))
# test DistEvalHook
with tempfile.TemporaryDirectory() as tmpdir:
eval_hook = DistEvalHook(data_loader)
runner = mmcv.runner.IterBasedRunner(
model=model,
optimizer=optimizer,
work_dir=tmpdir,
logger=logging.getLogger())
runner.register_hook(eval_hook)
runner.run([loader], [('train', 1)], 1)
test_dataset.evaluate.assert_called_with([torch.tensor([1])],
logger=runner.logger)
@patch('mmseg.apis.multi_gpu_test', multi_gpu_test)
def test_dist_eval_hook_epoch():
with pytest.raises(TypeError):
test_dataset = ExampleModel()
data_loader = [
DataLoader(
test_dataset,
batch_size=1,
sampler=None,
num_worker=0,
shuffle=False)
]
DistEvalHook(data_loader)
test_dataset = ExampleDataset()
test_dataset.evaluate = MagicMock(return_value=dict(test='success'))
loader = DataLoader(test_dataset, batch_size=1)
model = ExampleModel()
data_loader = DataLoader(
test_dataset, batch_size=1, sampler=None, num_workers=0, shuffle=False)
optim_cfg = dict(type='SGD', lr=0.01, momentum=0.9, weight_decay=0.0005)
optimizer = obj_from_dict(optim_cfg, torch.optim,
dict(params=model.parameters()))
# test DistEvalHook
with tempfile.TemporaryDirectory() as tmpdir:
eval_hook = DistEvalHook(data_loader, by_epoch=True, interval=2)
runner = mmcv.runner.EpochBasedRunner(
model=model,
optimizer=optimizer,
work_dir=tmpdir,
logger=logging.getLogger())
runner.register_hook(eval_hook)
runner.run([loader], [('train', 1)], 2)
test_dataset.evaluate.assert_called_with([torch.tensor([1])],
logger=runner.logger)
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