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e479c46 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | # SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
#
# 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.
"""Tests for torchcodec import-failure diagnostics in gr00t.utils.video_utils."""
from gr00t.utils.video_utils import _decoder_import_error
def test_ffmpeg_mismatch_message_is_actionable():
"""A native-load failure (RuntimeError) should be reported as an FFmpeg issue."""
exc = RuntimeError(
"Could not load libtorchcodec. Likely causes: FFmpeg is not properly "
"installed. We support versions 4, 5, 6 and 7."
)
err = _decoder_import_error(exc)
assert isinstance(err, ImportError)
msg = str(err)
assert "FFmpeg" in msg
assert "FFmpeg 8" in msg
# The original error is surfaced so the cause is not lost.
assert "Could not load libtorchcodec" in msg
def test_oserror_is_treated_as_load_failure():
err = _decoder_import_error(OSError("libavutil.so.60: cannot open shared object file"))
assert isinstance(err, ImportError)
assert "FFmpeg" in str(err)
def test_missing_package_message_points_to_install():
"""A plain ImportError means torchcodec is not installed."""
err = _decoder_import_error(ImportError("No module named 'torchcodec'"))
assert isinstance(err, ImportError)
# Pin the install branch via text unique to _TORCHCODEC_INSTALL_HINT; "install"
# alone also appears in the FFmpeg hint ("is installed", "conda install").
assert "uv pip install torchcodec" in str(err)
assert "native library" not in str(err)
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