test_convert_with_extras_on_v0_block() — langchain Function Reference

Source Code

libs/core/tests/unit_tests/messages/block_translators/test_langchain_v0.py lines 85–113

def test_convert_with_extras_on_v0_block() -> None:
    """Test that extras on old-style blocks are preserved in conversion.

    Refer to `_extract_v0_extras` for details.
    """
    block = {
        "type": "image",
        "source_type": "url",
        "url": "https://example.com/image.png",
        # extras follow
        "alt_text": "An example image",
        "caption": "Example caption",
        "name": "example_image",
        "description": None,
        "attribution": None,
    }
    expected_output = {
        "type": "image",
        "url": "https://example.com/image.png",
        "extras": {
            "alt_text": "An example image",
            "caption": "Example caption",
            "name": "example_image",
            # "description": None,  # These are filtered out
            # "attribution": None,
        },
    }

    assert _convert_legacy_v0_content_block_to_v1(block) == expected_output