92 lines
3.0 KiB
Python
92 lines
3.0 KiB
Python
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# Copyright The PyTorch Lightning team.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from pytorch_lightning import Trainer
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from pytorch_lightning.loggers import LoggerCollection, TensorBoardLogger
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from tests.loggers.test_base import CustomLogger
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def test_trainer_loggers_property():
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"""Test for correct initialization of loggers in Trainer."""
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logger1 = CustomLogger()
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logger2 = CustomLogger()
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# trainer.loggers should be a copy of the input list
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trainer = Trainer(logger=[logger1, logger2])
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assert trainer.loggers == [logger1, logger2]
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# trainer.loggers should create a list of size 1
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trainer = Trainer(logger=logger1)
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assert trainer.loggers == [logger1]
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# trainer.loggers should be an empty list
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trainer = Trainer(logger=False)
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assert trainer.loggers == []
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# trainer.loggers should be a list of size 1 holding the default logger
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trainer = Trainer(logger=True)
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assert trainer.loggers == [trainer.logger]
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assert type(trainer.loggers[0]) == TensorBoardLogger
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def test_trainer_loggers_setters():
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"""Test the behavior of setters for trainer.logger and trainer.loggers."""
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logger1 = CustomLogger()
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logger2 = CustomLogger()
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logger_collection = LoggerCollection([logger1, logger2])
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logger_collection_2 = LoggerCollection([logger2])
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trainer = Trainer()
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assert type(trainer.logger) == TensorBoardLogger
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assert trainer.loggers == [trainer.logger]
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# Test setters for trainer.logger
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trainer.logger = logger1
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assert trainer.logger == logger1
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assert trainer.loggers == [logger1]
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trainer.logger = logger_collection
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assert trainer.logger._logger_iterable == logger_collection._logger_iterable
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assert trainer.loggers == [logger1, logger2]
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# LoggerCollection of size 1 should result in trainer.logger becoming the contained logger.
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trainer.logger = logger_collection_2
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assert trainer.logger == logger2
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assert trainer.loggers == [logger2]
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trainer.logger = None
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assert trainer.logger is None
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assert trainer.loggers == []
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# Test setters for trainer.loggers
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trainer.loggers = [logger1, logger2]
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assert trainer.loggers == [logger1, logger2]
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assert trainer.logger._logger_iterable == logger_collection._logger_iterable
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trainer.loggers = [logger1]
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assert trainer.loggers == [logger1]
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assert trainer.logger == logger1
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trainer.loggers = []
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assert trainer.loggers == []
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assert trainer.logger is None
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trainer.loggers = None
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assert trainer.loggers == []
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assert trainer.logger is None
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