Removed from_argparse_args tests in test_cli.py (#14597)

tests/tests_pytorch/test_cli.py

@@ -14,9 +14,6 @@
 import inspect
 import json
 import os
-import pickle
-import sys
-from argparse import Namespace
 from contextlib import contextmanager, ExitStack, redirect_stdout
 from io import StringIO
 from typing import Callable, List, Optional, Union
@@ -46,7 +43,6 @@ from pytorch_lightning.loggers.neptune import _NEPTUNE_AVAILABLE
 from pytorch_lightning.loggers.wandb import _WANDB_AVAILABLE
 from pytorch_lightning.strategies import DDPStrategy
 from pytorch_lightning.trainer.states import TrainerFn
-from pytorch_lightning.utilities import _TPU_AVAILABLE
 from pytorch_lightning.utilities.exceptions import MisconfigurationException
 from pytorch_lightning.utilities.imports import _TORCHVISION_AVAILABLE
 from tests_pytorch.helpers.runif import RunIf
@@ -67,42 +63,6 @@ def mock_subclasses(baseclass, *subclasses):
         yield None
 
 
-@mock.patch("argparse.ArgumentParser.parse_args")
-def test_default_args(mock_argparse):
-    """Tests default argument parser for Trainer."""
-    mock_argparse.return_value = Namespace(**Trainer.default_attributes())
-
-    parser = LightningArgumentParser(add_help=False, parse_as_dict=False)
-    args = parser.parse_args([])
-
-    args.max_epochs = 5
-    trainer = Trainer.from_argparse_args(args)
-
-    assert isinstance(trainer, Trainer)
-    assert trainer.max_epochs == 5
-
-
-@pytest.mark.parametrize("cli_args", [["--accumulate_grad_batches=22"], []])
-def test_add_argparse_args_redefined(cli_args):
-    """Redefines some default Trainer arguments via the cli and tests the Trainer initialization correctness."""
-    parser = LightningArgumentParser(add_help=False, parse_as_dict=False)
-    parser.add_lightning_class_args(Trainer, None)
-
-    args = parser.parse_args(cli_args)
-
-    # make sure we can pickle args
-    pickle.dumps(args)
-
-    # Check few deprecated args are not in namespace:
-    for depr_name in ("gradient_clip", "nb_gpu_nodes", "max_nb_epochs"):
-        assert depr_name not in args
-
-    trainer = Trainer.from_argparse_args(args=args)
-    pickle.dumps(trainer)
-
-    assert isinstance(trainer, Trainer)
-
-
 @pytest.mark.parametrize("cli_args", [["--callbacks=1", "--logger"], ["--foo", "--bar=1"]])
 def test_add_argparse_args_redefined_error(cli_args, monkeypatch):
     """Asserts error raised in case of passing not default cli arguments."""
@@ -122,121 +82,6 @@ def test_add_argparse_args_redefined_error(cli_args, monkeypatch):
         parser.parse_args(cli_args)
 
 
-@pytest.mark.parametrize(
-    ["cli_args", "expected"],
-    [
-        ("--auto_lr_find=True --auto_scale_batch_size=power", dict(auto_lr_find=True, auto_scale_batch_size="power")),
-        (
-            "--auto_lr_find any_string --auto_scale_batch_size ON",
-            dict(auto_lr_find="any_string", auto_scale_batch_size=True),
-        ),
-        ("--auto_lr_find=Yes --auto_scale_batch_size=On", dict(auto_lr_find=True, auto_scale_batch_size=True)),
-        ("--auto_lr_find Off --auto_scale_batch_size No", dict(auto_lr_find=False, auto_scale_batch_size=False)),
-        ("--auto_lr_find TRUE --auto_scale_batch_size FALSE", dict(auto_lr_find=True, auto_scale_batch_size=False)),
-        ("--tpu_cores=8", dict(tpu_cores=8)),
-        ("--tpu_cores=1,", dict(tpu_cores="1,")),
-        ("--limit_train_batches=100", dict(limit_train_batches=100)),
-        ("--limit_train_batches 0.8", dict(limit_train_batches=0.8)),
-        ("--enable_model_summary FALSE", dict(enable_model_summary=False)),
-        (
-            "",
-            dict(
-                # These parameters are marked as Optional[...] in Trainer.__init__,
-                # with None as default. They should not be changed by the argparse
-                # interface.
-                min_steps=None,
-                accelerator=None,
-                profiler=None,
-            ),
-        ),
-    ],
-)
-def test_parse_args_parsing(cli_args, expected):
-    """Test parsing simple types and None optionals not modified."""
-    cli_args = cli_args.split(" ") if cli_args else []
-    with mock.patch("sys.argv", ["any.py"] + cli_args):
-        parser = LightningArgumentParser(add_help=False, parse_as_dict=False)
-        parser.add_lightning_class_args(Trainer, None)
-        args = parser.parse_args()
-
-    for k, v in expected.items():
-        assert getattr(args, k) == v
-    if "tpu_cores" not in expected or _TPU_AVAILABLE:
-        assert Trainer.from_argparse_args(args)
-
-
-@pytest.mark.parametrize(
-    ["cli_args", "expected", "instantiate"],
-    [
-        (["--gpus", "[0, 2]"], dict(gpus=[0, 2]), False),
-        (["--tpu_cores=[1,3]"], dict(tpu_cores=[1, 3]), False),
-        (['--accumulate_grad_batches={"5":3,"10":20}'], dict(accumulate_grad_batches={5: 3, 10: 20}), True),
-    ],
-)
-def test_parse_args_parsing_complex_types(cli_args, expected, instantiate):
-    """Test parsing complex types."""
-    with mock.patch("sys.argv", ["any.py"] + cli_args):
-        parser = LightningArgumentParser(add_help=False, parse_as_dict=False)
-        parser.add_lightning_class_args(Trainer, None)
-        args = parser.parse_args()
-
-    for k, v in expected.items():
-        assert getattr(args, k) == v
-    if instantiate:
-        assert Trainer.from_argparse_args(args)
-
-
-@pytest.mark.parametrize(
-    ["cli_args", "expected_gpu"],
-    [
-        ("--accelerator gpu --devices 1", [0]),
-        ("--accelerator gpu --devices 0,", [0]),
-        ("--accelerator gpu --devices 1,", [1]),
-        ("--accelerator gpu --devices 0,1", [0, 1]),
-    ],
-)
-def test_parse_args_parsing_gpus(monkeypatch, cli_args, expected_gpu):
-    """Test parsing of gpus and instantiation of Trainer."""
-    monkeypatch.setattr("lightning_lite.utilities.device_parser.num_cuda_devices", lambda: 2)
-    monkeypatch.setattr("lightning_lite.utilities.device_parser.is_cuda_available", lambda: True)
-    cli_args = cli_args.split(" ") if cli_args else []
-    with mock.patch("sys.argv", ["any.py"] + cli_args):
-        parser = LightningArgumentParser(add_help=False, parse_as_dict=False)
-        parser.add_lightning_class_args(Trainer, None)
-        args = parser.parse_args()
-
-    trainer = Trainer.from_argparse_args(args)
-    assert trainer.device_ids == expected_gpu
-
-
-@pytest.mark.skipif(
-    sys.version_info < (3, 7),
-    reason="signature inspection while mocking is not working in Python < 3.7 despite autospec",
-)
-@pytest.mark.parametrize(
-    ["cli_args", "extra_args"],
-    [
-        ({}, {}),
-        (dict(logger=False), {}),
-        (dict(logger=False), dict(logger=True)),
-        (dict(logger=False), dict(enable_checkpointing=True)),
-    ],
-)
-def test_init_from_argparse_args(cli_args, extra_args):
-    unknown_args = dict(unknown_arg=0)
-
-    # unknown args in the argparser/namespace should be ignored
-    with mock.patch("pytorch_lightning.Trainer.__init__", autospec=True, return_value=None) as init:
-        trainer = Trainer.from_argparse_args(Namespace(**cli_args, **unknown_args), **extra_args)
-        expected = dict(cli_args)
-        expected.update(extra_args)  # extra args should override any cli arg
-        init.assert_called_with(trainer, **expected)
-
-    # passing in unknown manual args should throw an error
-    with pytest.raises(TypeError, match=r"__init__\(\) got an unexpected keyword argument 'unknown_arg'"):
-        Trainer.from_argparse_args(Namespace(**cli_args), **extra_args, **unknown_args)
-
-
 class Model(LightningModule):
     def __init__(self, model_param: int):
         super().__init__()