tractor/ai/prompt-io/claude/20260413T192116Z_f851f28_prompt_io.md

Prompt

User provided a detailed implementation plan for a new test_tpt_bind_addrs.py test suite covering open_root_actor(tpt_bind_addrs=...) — the three runtime code paths in _root.py:385-450:

1. Non-registrar, no explicit bind -> random addrs
2. Registrar, no explicit bind -> registry_addrs
3. Explicit bind given -> wrap_address() + merge

Plan specified 6 test functions (~10 parametrized variants), predicted a type-mixing bug at line 446, and asked for an in-flight fix if confirmed.

Response summary

Created tests/discovery/test_tpt_bind_addrs.py with 9 collected test variants across 6 functions:

• test_registrar_root_tpt_bind_addrs (3 variants: bind-eq-reg, bind-subset-reg, bind-disjoint-reg)
• test_non_registrar_root_tpt_bind_addrs (2 variants: bind-same-bindspace, bind-disjoint)
• test_non_registrar_default_random_bind (baseline, no explicit bind)
• test_tpt_bind_addrs_as_maddr_str (multiaddr string input)
• test_registrar_merge_binds_union (registrar + disjoint bind -> union)
• test_open_nursery_forwards_tpt_bind_addrs (open_nursery(**kwargs) forwarding)

Confirmed and fixed the predicted bug at _root.py:446: the registrar merge path mixed Address objects (tpt_bind_addrs) with raw tuples (uw_reg_addrs) inside set(), preventing deduplication and causing double-bind OSError.

Fix: wrap uw_reg_addrs before the set union:

# before (broken)
tpt_bind_addrs = list(set(
    tpt_bind_addrs + uw_reg_addrs
))
# after (fixed)
tpt_bind_addrs = list(set(
    tpt_bind_addrs
    + [wrap_address(a) for a in uw_reg_addrs]
))

All 9 tests pass after the fix.

Files changed

• tests/discovery/test_tpt_bind_addrs.py (new)
• tractor/_root.py:446 (bug fix, 1 line)

Human edits

N/A — pending review.