Function test_json_exception_groups

tests/test_tracebacks.py:935–999

When rendered as JSON, the "Trace.stacks" is stripped, so "exceptions" is a list of lists and not a list of objects (with a single "stacks" attribute.

()

    sys.version_info < (3, 11), reason="Requires Python 3.11 or higher"
)
def test_json_exception_groups() -> None:
    """
    When rendered as JSON, the "Trace.stacks" is stripped, so "exceptions" is a
    list of lists and not a list of objects (with a single "stacks" attribute.
    """

    lineno = get_next_lineno()

    async def t1() -> None:
        1 / 0

    async def t2() -> None:
        raise ValueError("Blam!")

    async def main():
        async with asyncio.TaskGroup() as tg:
            tg.create_task(t1())
            tg.create_task(t2())

    try:
        asyncio.run(main())
    except Exception as e:
        format_json = tracebacks.ExceptionDictTransformer(show_locals=False)
        result = format_json((type(e), e, e.__traceback__))

    assert "ExceptionGroup" == result[0]["exc_type"]
    exceptions = result[0]["exceptions"]
    assert [
        [
            {
                "exc_type": "ZeroDivisionError",
                "exc_value": "division by zero",
                "exc_notes": [],
                "syntax_error": None,
                "is_cause": False,
                "frames": [
                    {
                        "filename": __file__,
                        "lineno": lineno + 2,
                        "name": "t1",
                    }
                ],
                "is_group": False,
                "exceptions": [],
            }
        ],
        [
            {
                "exc_type": "ValueError",
                "exc_value": "Blam!",
                "exc_notes": [],
                "syntax_error": None,
                "is_cause": False,
                "frames": [
                    {
                        "filename": __file__,
                        "lineno": lineno + 5,
                        "name": "t2",