tests/utils/test_visualization_utils.py

#!/usr/bin/env python

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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
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#     http://www.apache.org/licenses/LICENSE-2.0
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"""Tests for the backend-agnostic visualization dispatch.

These exercise the display-mode routing/validation only; they need neither ``rerun`` nor
``foxglove`` installed since the unknown-mode branch raises before touching any backend. Backend
behavior is covered in ``test_rerun_visualization.py`` and ``test_foxglove_visualization.py``.
"""

import pytest

from lerobot.utils import visualization_utils as vu


def test_visualization_modes():
    assert vu.VISUALIZATION_MODES == ("rerun", "foxglove")


@pytest.mark.parametrize("func", ["init_visualization", "log_visualization_data", "shutdown_visualization"])
def test_dispatch_rejects_unknown_mode(func):
    with pytest.raises(ValueError, match="Unknown display_mode"):
        getattr(vu, func)("bogus")