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[test] replace capsys with the more refined CaptureStderr/CaptureStdout (#6422)

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* replace capsys with the more refined CaptureStderr/CaptureStdout

* Update examples/seq2seq/test_seq2seq_examples.py

Co-authored-by: Sam Shleifer <sshleifer@gmail.com>
This commit is contained in:
Stas Bekman 2020-08-12 04:54:28 -07:00 committed by GitHub
parent ac5bcf236e
commit 87b359439f
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1 changed files with 8 additions and 8 deletions
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16
examples/seq2seq/test_seq2seq_examples.py
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@ -15,7 +15,7 @@ from torch.utils.data import DataLoader
import lightning_base
from transformers import AutoModelForSeq2SeqLM, AutoTokenizer
from transformers.testing_utils import require_multigpu
from transformers.testing_utils import CaptureStderr, CaptureStdout, require_multigpu
from .distillation import distill_main, evaluate_checkpoint
from .finetune import SummarizationModule, main
@ -329,7 +329,7 @@ def test_finetune_extra_model_args():
assert str(excinfo.value) == f"model config doesn't have a `{unsupported_param}` attribute"
def test_finetune_lr_shedulers(capsys):
def test_finetune_lr_schedulers():
args_d: dict = CHEAP_ARGS.copy()
task = "summarization"
@ -361,23 +361,23 @@ def test_finetune_lr_shedulers(capsys):
# --help test
with pytest.raises(SystemExit) as excinfo:
args = parser.parse_args(args)
with CaptureStdout() as cs:
args = parser.parse_args(args)
assert False, "--help is expected to sys.exit"
assert excinfo.type == SystemExit
captured = capsys.readouterr()
expected = lightning_base.arg_to_scheduler_metavar
assert expected in captured.out, "--help is expected to list the supported schedulers"
assert expected in cs.out, "--help is expected to list the supported schedulers"
# --lr_scheduler=non_existing_scheduler test
unsupported_param = "non_existing_scheduler"
args = {f"--lr_scheduler={unsupported_param}"}
with pytest.raises(SystemExit) as excinfo:
args = parser.parse_args(args)
with CaptureStderr() as cs:
args = parser.parse_args(args)
assert False, "invalid argument is expected to sys.exit"
assert excinfo.type == SystemExit
captured = capsys.readouterr()
expected = f"invalid choice: '{unsupported_param}'"
assert expected in captured.err, f"should have bailed on invalid choice of scheduler {unsupported_param}"
assert expected in cs.err, f"should have bailed on invalid choice of scheduler {unsupported_param}"
# --lr_scheduler=existing_scheduler test
supported_param = "cosine"