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[Refactor] Refactor unit test of EmptyCacheHook (#805)

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* test EmptyCacheHook with runner

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Mashiro 2022-12-09 17:31:00 +08:00 committed by Zaida Zhou
parent 425ca99e90
commit 4b781c336b
1 changed files with 60 additions and 9 deletions
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69
tests/test_hooks/test_empty_cache_hook.py
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@ -1,14 +1,65 @@
# Copyright (c) OpenMMLab. All rights reserved. # Copyright (c) OpenMMLab. All rights reserved.
from unittest.mock import Mock from unittest.mock import patch
from mmengine.hooks import EmptyCacheHook from mmengine.testing import RunnerTestCase
class TestEmptyCacheHook: class TestEmptyCacheHook(RunnerTestCase):
def test_emtpy_cache_hook(self): def test_with_runner(self):
hook = EmptyCacheHook(True, True, True) with patch('torch.cuda.empty_cache') as mock_empty_cache:
runner = Mock() cfg = self.epoch_based_cfg
hook._after_iter(runner, 0) cfg.custom_hooks = [dict(type='EmptyCacheHook')]
hook._before_epoch(runner) cfg.train_cfg.val_interval = 1e6 # disable validation during training # noqa: E501
hook._after_epoch(runner) runner = self.build_runner(cfg)
runner.train()
runner.test()
runner.val()
# Call `torch.cuda.empty_cache` after each epoch:
# runner.train: `max_epochs` times.
# runner.val: `1` time.
# runner.test: `1` time.
target_called_times = runner.max_epochs + 2
self.assertEqual(mock_empty_cache.call_count, target_called_times)
with patch('torch.cuda.empty_cache') as mock_empty_cache:
cfg.custom_hooks = [dict(type='EmptyCacheHook', before_epoch=True)]
runner = self.build_runner(cfg)
runner.train()
runner.val()
runner.test()
# Call `torch.cuda.empty_cache` after/before each epoch:
# runner.train: `max_epochs*2` times.
# runner.val: `1*2` times.
# runner.test: `1*2` times.
target_called_times = runner.max_epochs * 2 + 4
self.assertEqual(mock_empty_cache.call_count, target_called_times)
with patch('torch.cuda.empty_cache') as mock_empty_cache:
cfg.custom_hooks = [
dict(
type='EmptyCacheHook', after_iter=True, before_epoch=True)
]
runner = self.build_runner(cfg)
runner.train()
runner.val()
runner.test()
# Call `torch.cuda.empty_cache` after/before each epoch,
# after each iteration:
# runner.train: `max_epochs*2 + len(dataloader)*max_epochs` times. # noqa: E501
# runner.val: `1*2 + len(val_dataloader)` times.
# runner.test: `1*2 + len(val_dataloader)` times.
target_called_times = \
runner.max_epochs * 2 + 4 + \
len(runner.train_dataloader) * runner.max_epochs + \
len(runner.val_dataloader) + \
len(runner.test_dataloader)
self.assertEqual(mock_empty_cache.call_count, target_called_times)