Do not require omegaconf to run tests

tests/checkpointing/test_model_checkpoint.py

@@ -29,7 +29,6 @@
 import pytest
 import torch
 import yaml
-from omegaconf import Container, OmegaConf
 from torch import optim
 
 import pytorch_lightning as pl
@@ -39,9 +38,13 @@
 from pytorch_lightning.loggers import TensorBoardLogger
 from pytorch_lightning.utilities.cloud_io import load as pl_load
 from pytorch_lightning.utilities.exceptions import MisconfigurationException
+from pytorch_lightning.utilities.imports import _OMEGACONF_AVAILABLE
 from tests.helpers import BoringModel
 from tests.helpers.runif import RunIf
 
+if _OMEGACONF_AVAILABLE:
+    from omegaconf import Container, OmegaConf
+
 
 def test_model_checkpoint_state_key():
     early_stopping = ModelCheckpoint(monitor="val_loss")
@@ -1101,8 +1104,8 @@ def training_step(self, *args):
     assert model_checkpoint.current_score == expected
 
 
-@pytest.mark.parametrize("hparams_type", [dict, Container])
-def test_hparams_type(tmpdir, hparams_type):
+@pytest.mark.parametrize("use_omegaconf", [False, pytest.param(True, marks=RunIf(omegaconf=True))])
+def test_hparams_type(tmpdir, use_omegaconf):
     class TestModel(BoringModel):
         def __init__(self, hparams):
             super().__init__()
@@ -1120,15 +1123,15 @@ def __init__(self, hparams):
         enable_model_summary=False,
     )
     hp = {"test_hp_0": 1, "test_hp_1": 2}
-    hp = OmegaConf.create(hp) if hparams_type == Container else Namespace(**hp)
+    hp = OmegaConf.create(hp) if use_omegaconf else Namespace(**hp)
     model = TestModel(hp)
     trainer.fit(model)
     ckpt = trainer.checkpoint_connector.dump_checkpoint()
-    if hparams_type == Container:
-        assert isinstance(ckpt[model.CHECKPOINT_HYPER_PARAMS_KEY], hparams_type)
+    if use_omegaconf:
+        assert isinstance(ckpt[model.CHECKPOINT_HYPER_PARAMS_KEY], Container)
     else:
         # make sure it's not AttributeDict
-        assert type(ckpt[model.CHECKPOINT_HYPER_PARAMS_KEY]) is hparams_type
+        assert type(ckpt[model.CHECKPOINT_HYPER_PARAMS_KEY]) is dict
 
 
 def test_ckpt_version_after_rerun_new_trainer(tmpdir):

tests/core/test_datamodules.py

@@ -20,12 +20,11 @@
 
 import pytest
 import torch
-from omegaconf import OmegaConf
 
 from pytorch_lightning import LightningDataModule, Trainer
 from pytorch_lightning.callbacks import ModelCheckpoint
 from pytorch_lightning.trainer.states import TrainerFn
-from pytorch_lightning.utilities import AttributeDict
+from pytorch_lightning.utilities import _OMEGACONF_AVAILABLE, AttributeDict
 from pytorch_lightning.utilities.exceptions import MisconfigurationException
 from pytorch_lightning.utilities.model_helpers import is_overridden
 from tests.helpers import BoringDataModule, BoringModel
@@ -34,6 +33,9 @@
 from tests.helpers.simple_models import ClassificationModel
 from tests.helpers.utils import reset_seed
 
+if _OMEGACONF_AVAILABLE:
+    from omegaconf import OmegaConf
+
 
 @mock.patch("pytorch_lightning.trainer.trainer.Trainer.node_rank", new_callable=PropertyMock)
 @mock.patch("pytorch_lightning.trainer.trainer.Trainer.local_rank", new_callable=PropertyMock)
@@ -440,8 +442,9 @@ def test_hyperparameters_saving():
     data = DataModuleWithHparams_1({"hello": "world"}, "foo", kwarg0="bar")
     assert data.hparams == AttributeDict({"hello": "world"})
 
-    data = DataModuleWithHparams_1(OmegaConf.create({"hello": "world"}), "foo", kwarg0="bar")
-    assert data.hparams == OmegaConf.create({"hello": "world"})
+    if _OMEGACONF_AVAILABLE:
+        data = DataModuleWithHparams_1(OmegaConf.create({"hello": "world"}), "foo", kwarg0="bar")
+        assert data.hparams == OmegaConf.create({"hello": "world"})
 
 
 def test_define_as_dataclass():

tests/helpers/runif.py

@@ -27,6 +27,7 @@
     _FAIRSCALE_FULLY_SHARDED_AVAILABLE,
     _HOROVOD_AVAILABLE,
     _IPU_AVAILABLE,
+    _OMEGACONF_AVAILABLE,
     _RICH_AVAILABLE,
     _TORCH_QUANTIZE_AVAILABLE,
     _TPU_AVAILABLE,
@@ -70,6 +71,7 @@ def __new__(
         deepspeed: bool = False,
         rich: bool = False,
         skip_49370: bool = False,
+        omegaconf: bool = False,
         **kwargs,
     ):
         """
@@ -89,9 +91,10 @@ def __new__(
             standalone: Mark the test as standalone, our CI will run it in a separate process.
             fairscale: Require that facebookresearch/fairscale is installed.
             fairscale_fully_sharded: Require that `fairscale` fully sharded support is available.
-            deepspeed: Require that Microsoft/DeepSpeed is installed.
+            deepspeed: Require that microsoft/DeepSpeed is installed.
             rich: Require that willmcgugan/rich is installed.
             skip_49370: Skip the test as it's impacted by https://github.com/pytorch/pytorch/issues/49370.
+            omegaconf: Require that omry/omegaconf is installed.
             **kwargs: Any :class:`pytest.mark.skipif` keyword arguments.
         """
         conditions = []
@@ -177,6 +180,10 @@ def __new__(
             conditions.append(ge_3_9 and old_torch)
             reasons.append("Impacted by https://github.com/pytorch/pytorch/issues/49370")
 
+        if omegaconf:
+            conditions.append(not _OMEGACONF_AVAILABLE)
+            reasons.append("omegaconf")
+
         reasons = [rs for cond, rs in zip(conditions, reasons) if cond]
         return pytest.mark.skipif(
             *args, condition=any(conditions), reason=f"Requires: [{' + '.join(reasons)}]", **kwargs

tests/loggers/test_tensorboard.py

@@ -21,13 +21,16 @@
 import pytest
 import torch
 import yaml
-from omegaconf import OmegaConf
 
 from pytorch_lightning import Trainer
 from pytorch_lightning.loggers import TensorBoardLogger
 from pytorch_lightning.loggers.base import LoggerCollection
-from pytorch_lightning.utilities.imports import _compare_version
+from pytorch_lightning.utilities.imports import _compare_version, _OMEGACONF_AVAILABLE
 from tests.helpers import BoringModel
+from tests.helpers.runif import RunIf
+
+if _OMEGACONF_AVAILABLE:
+    from omegaconf import OmegaConf
 
 
 @pytest.mark.skipif(
@@ -205,6 +208,7 @@ def test_tensorboard_log_hparams_and_metrics(tmpdir):
     logger.log_hyperparams(hparams, metrics)
 
 
+@RunIf(omegaconf=True)
 def test_tensorboard_log_omegaconf_hparams_and_metrics(tmpdir):
     logger = TensorBoardLogger(tmpdir, default_hp_metric=False)
     hparams = {
@@ -214,8 +218,6 @@ def test_tensorboard_log_omegaconf_hparams_and_metrics(tmpdir):
         "bool": True,
         "dict": {"a": {"b": "c"}},
         "list": [1, 2, 3],
-        # "namespace": Namespace(foo=Namespace(bar="buzz")),
-        # "layer": torch.nn.BatchNorm1d,
     }
     hparams = OmegaConf.create(hparams)
 

tests/models/test_hparams.py

@@ -24,21 +24,24 @@
 import pytest
 import torch
 from fsspec.implementations.local import LocalFileSystem
-from omegaconf import Container, OmegaConf
-from omegaconf.dictconfig import DictConfig
 from torch.utils.data import DataLoader
 
 from pytorch_lightning import LightningModule, Trainer
 from pytorch_lightning.callbacks import ModelCheckpoint
 from pytorch_lightning.core.datamodule import LightningDataModule
 from pytorch_lightning.core.saving import load_hparams_from_yaml, save_hparams_to_yaml
-from pytorch_lightning.utilities import _HYDRA_EXPERIMENTAL_AVAILABLE, AttributeDict, is_picklable
+from pytorch_lightning.utilities import _HYDRA_EXPERIMENTAL_AVAILABLE, _OMEGACONF_AVAILABLE, AttributeDict, is_picklable
 from pytorch_lightning.utilities.exceptions import MisconfigurationException
 from tests.helpers import BoringModel, RandomDataset
+from tests.helpers.runif import RunIf
 
 if _HYDRA_EXPERIMENTAL_AVAILABLE:
     from hydra.experimental import compose, initialize
 
+if _OMEGACONF_AVAILABLE:
+    from omegaconf import Container, OmegaConf
+    from omegaconf.dictconfig import DictConfig
+
 
 class SaveHparamsModel(BoringModel):
     """Tests that a model can take an object."""
@@ -117,6 +120,7 @@ def test_dict_hparams(tmpdir, cls):
     _run_standard_hparams_test(tmpdir, model, cls)
 
 
+@RunIf(omegaconf=True)
 @pytest.mark.parametrize("cls", [SaveHparamsModel, SaveHparamsDecoratedModel])
 def test_omega_conf_hparams(tmpdir, cls):
     # init model
@@ -275,10 +279,18 @@ def __init__(obj, *more_args, other_arg=300, **more_kwargs):
         obj.save_hyperparameters()
 
 
-class DictConfSubClassBoringModel(SubClassBoringModel):
-    def __init__(self, *args, dict_conf=OmegaConf.create(dict(my_param="something")), **kwargs):
-        super().__init__(*args, **kwargs)
-        self.save_hyperparameters()
+if _OMEGACONF_AVAILABLE:
+
+    class DictConfSubClassBoringModel(SubClassBoringModel):
+        def __init__(self, *args, dict_conf=OmegaConf.create(dict(my_param="something")), **kwargs):
+            super().__init__(*args, **kwargs)
+            self.save_hyperparameters()
+
+
+else:
+
+    class DictConfSubClassBoringModel:
+        ...
 
 
 @pytest.mark.parametrize(
@@ -290,7 +302,7 @@ def __init__(self, *args, dict_conf=OmegaConf.create(dict(my_param="something"))
         SubSubClassBoringModel,
         AggSubClassBoringModel,
         UnconventionalArgsBoringModel,
-        DictConfSubClassBoringModel,
+        pytest.param(DictConfSubClassBoringModel, marks=RunIf(omegaconf=True)),
     ],
 )
 def test_collect_init_arguments(tmpdir, cls):
@@ -383,31 +395,6 @@ def test_collect_init_arguments_with_local_vars(cls):
     assert model.hparams["arg2"] == 2
 
 
-# @pytest.mark.parametrize("cls,config", [
-#     (SaveHparamsModel, Namespace(my_arg=42)),
-#     (SaveHparamsModel, dict(my_arg=42)),
-#     (SaveHparamsModel, OmegaConf.create(dict(my_arg=42))),
-#     (AssignHparamsModel, Namespace(my_arg=42)),
-#     (AssignHparamsModel, dict(my_arg=42)),
-#     (AssignHparamsModel, OmegaConf.create(dict(my_arg=42))),
-# ])
-# def test_single_config_models(tmpdir, cls, config):
-#     """ Test that the model automatically saves the arguments passed into the constructor """
-#     model = cls(config)
-#
-#     # no matter how you do it, it should be assigned
-#     assert model.hparams.my_arg == 42
-#
-#     # verify that the checkpoint saved the correct values
-#     trainer = Trainer(default_root_dir=tmpdir, max_epochs=2, overfit_batches=0.5)
-#     trainer.fit(model)
-#
-#     # verify that model loads correctly
-#     raw_checkpoint_path = _raw_checkpoint_path(trainer)
-#     model = cls.load_from_checkpoint(raw_checkpoint_path)
-#     assert model.hparams.my_arg == 42
-
-
 class AnotherArgModel(BoringModel):
     def __init__(self, arg1):
         super().__init__()
@@ -511,8 +498,9 @@ def _compare_params(loaded_params, default_params: dict):
     save_hparams_to_yaml(path_yaml, AttributeDict(hparams))
     _compare_params(load_hparams_from_yaml(path_yaml, use_omegaconf=False), hparams)
 
-    save_hparams_to_yaml(path_yaml, OmegaConf.create(hparams))
-    _compare_params(load_hparams_from_yaml(path_yaml), hparams)
+    if _OMEGACONF_AVAILABLE:
+        save_hparams_to_yaml(path_yaml, OmegaConf.create(hparams))
+        _compare_params(load_hparams_from_yaml(path_yaml), hparams)
 
 
 class NoArgsSubClassBoringModel(CustomBoringModel):

tests/trainer/test_trainer.py

@@ -26,7 +26,6 @@
 import cloudpickle
 import pytest
 import torch
-from omegaconf import OmegaConf
 from torch.nn.parallel.distributed import DistributedDataParallel
 from torch.optim import SGD
 from torch.utils.data import DataLoader, IterableDataset
@@ -51,6 +50,7 @@
 from pytorch_lightning.utilities import _AcceleratorType, _StrategyType
 from pytorch_lightning.utilities.cloud_io import load as pl_load
 from pytorch_lightning.utilities.exceptions import DeadlockDetectedException, MisconfigurationException
+from pytorch_lightning.utilities.imports import _OMEGACONF_AVAILABLE
 from pytorch_lightning.utilities.seed import seed_everything
 from tests.base import EvalModelTemplate
 from tests.helpers import BoringModel, RandomDataset
@@ -59,6 +59,9 @@
 from tests.helpers.runif import RunIf
 from tests.helpers.simple_models import ClassificationModel
 
+if _OMEGACONF_AVAILABLE:
+    from omegaconf import OmegaConf
+
 
 @pytest.mark.parametrize("url_ckpt", [True, False])
 def test_no_val_module(monkeypatch, tmpdir, tmpdir_server, url_ckpt):
@@ -1271,12 +1274,12 @@ def __init__(self, **kwargs):
         TrainerSubclass(abcdefg="unknown_arg")
 
 
-@pytest.mark.parametrize(
-    "trainer_params", [OmegaConf.create(dict(max_epochs=1, gpus=1)), OmegaConf.create(dict(max_epochs=1, gpus=[0]))]
-)
-@RunIf(min_gpus=1)
-def test_trainer_omegaconf(trainer_params):
-    Trainer(**trainer_params)
+@RunIf(omegaconf=True)
+@pytest.mark.parametrize("trainer_params", [{"max_epochs": 1, "gpus": 1}, {"max_epochs": 1, "gpus": [0]}])
+@mock.patch("torch.cuda.device_count", return_value=1)
+def test_trainer_omegaconf(_, trainer_params):
+    config = OmegaConf.create(trainer_params)
+    Trainer(**config)
 
 
 def test_trainer_pickle(tmpdir):