tractor/tests/devx/test_pformat.py

53 lines
1.3 KiB
Python

'''
Unit tests for the `tractor.devx.pformat` render helpers.
'''
from __future__ import annotations
import pytest
from tractor.devx.pformat import (
pformat_boxed_tb,
pformat_caller_frame,
)
@pytest.mark.parametrize(
'box_tb',
[True, False],
ids=['boxed', 'bare'],
)
def test_pformat_caller_frame_renders(box_tb: bool):
'''
`pformat_caller_frame()` must render, not raise.
XXX the `box_tb=True` branch was passing an `indent=''` kwarg
that `pformat_boxed_tb()` never accepted, so it blew up with
a `TypeError`. Nothing in the test suite covered it, and the
only caller is `_mk_send_mte()` — i.e. EVERY send-side
`MsgTypeError` died while formatting itself, masking the real
msg-spec violation behind a bogus `TypeError`.
'''
report: str = pformat_caller_frame(
stack_limit=3,
box_tb=box_tb,
)
assert isinstance(report, str)
assert 'test_pformat_caller_frame_renders' in report
def test_pformat_boxed_tb_rejects_unknown_kwargs():
'''
Pin the signature so a future typo'd kwarg fails loudly at the
call site rather than only when some rare error path runs.
'''
assert pformat_boxed_tb(tb_str='doggy\n')
with pytest.raises(TypeError):
pformat_boxed_tb(
tb_str='doggy\n',
indent='',
)