lightning/tests/trainer/warnings_tests/test_flow_warnings.py

51 lines
1.4 KiB
Python

# Copyright The PyTorch Lightning team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from unittest import mock
from tests.base.boring_model import BoringModel
from pytorch_lightning import Trainer
import warnings
class TestModel(BoringModel):
def training_step(self, batch, batch_idx):
acc = self.step(batch[0])
return acc
@mock.patch.dict(os.environ, {"PL_DEV_DEBUG": "1"})
def test_no_depre_without_epoch_end(tmpdir):
"""
Tests that only training_step can be used
"""
model = TestModel()
model.validation_epoch_end = None
trainer = Trainer(
default_root_dir=tmpdir,
limit_train_batches=2,
limit_val_batches=2,
max_epochs=2,
log_every_n_steps=1,
weights_summary=None,
)
with warnings.catch_warnings(record=True) as w:
trainer.fit(model)
for msg in w:
assert 'should not return anything ' not in str(msg)