Historical field note
This record preserves prior investigation or planning evidence. It is not a current operating contract; use the numbered book and current runbooks for instructions.
Assessment: task_83f38e9754f64908a316cccba0952329¶
Task: Investigate — audit src/mac/notifier_service.py coverage against the
contract floors and reproduce the parent's environment-prerequisite failure.
Parent: task_83e2d77f8c9549518ccfef780bc36415 — "Repair environment
prerequisites: Analyze notifier_service.py coverage gap against contract floors"
Assessment Date: 2026-07-14
Assessed by: fleet worker (investigation, no source/test edits)
Status: CLOSED — Prerequisite already satisfied; no coverage remediation required¶
Ground Truth Observed¶
Measured in the task-owned worktree with the bootstrapped .venv
(Python 3.12.13, pytest 8.4.2, coverage 7.15.1; git 2.39.5, gh 2.95.0 present).
1. Module-scoped coverage — src/mac/notifier_service.py¶
Command:
.venv/bin/python -m coverage run --branch --source=mac.notifier_service -m pytest tests/test_notifier_service.py
| Metric | Value |
|---|---|
| Tests | 87 passed |
| Statements | 240 / 240 covered — 100.00% |
| Branches | 96 / 96 covered — 100.00% |
| Missing lines | none |
| Missing / partial arcs | none |
The module is fully covered at both statement and branch granularity. There are no uncovered lines or arcs to add tests for.
2. Full contract suite — scripts/run-contract-tests.sh¶
| Metric | Value |
|---|---|
| pytest result | 6290 passed, 21 skipped, 0 failed, 5 warnings (635.32s) |
| Contract script exit | 0 (pass) |
scripts/coverage-policy.py output (floors from test-policy.toml:
statement 90.0%, branch 80.0%):
coverage safety: statements 48957/52745 (92.82%, floor 90.00%); branches 13868/16452 (84.29%, floor 80.00%)
Aggregate statements 92.82% ≥ 90.00% floor and branches 84.29% ≥ 80.00%
floor. notifier_service.py does not appear in the aggregate "missing lines"
report — it is among the files skipped for complete coverage.
Comparison to Contract Floors¶
| Check | Observed | Floor | Result |
|---|---|---|---|
| notifier_service.py statements | 100.00% | (module fully covered) | PASS |
| notifier_service.py branches | 100.00% | (module fully covered) | PASS |
| Aggregate statements | 92.82% | 90.00% | PASS |
| Aggregate branches | 84.29% | 80.00% | PASS |
| Contract test exit | 0 | 0 | PASS |
Numbers match the task baseline (notifier_service.py 100%/100%; ~6284 passed / 21 skipped; aggregate ~92.79% / ~84.26%) within run-to-run variance.
Finding¶
- Is the coverage gap real / reproducible? No.
notifier_service.pyis at 100% statement and 100% branch coverage. No gap reproduces. - Are the contract floors met? Yes. Aggregate statements (92.82%) and branches (84.29%) both clear the 90%/80% safety floors, and the full contract suite passes with exit 0.
- What remediation is needed? None for coverage or tests. No lines or arcs
in
notifier_service.pyrequire added/adjusted tests.
Root Cause of the Parent's "Environment-Prerequisite" Failure¶
The parent failure is not a coverage or test-correctness defect. When the
toolchain or bootstrap is intact (python3/git/gh present and the .venv
with pytest/coverage created by python3 scripts/bootstrap-project.py),
the suite passes and floors are met. The parent's failure signature is
attributable to an environment/toolchain state (missing interpreter, missing
.venv, or a failed bootstrap) rather than product code. In this worktree the
required tools and bootstrap outputs are all present, so the prerequisite
appears already satisfied and no environment repair was required here.
Note¶
This assessment file is the committed deliverable for an investigation-only
task. A prior attempt established the same ground truth but failed contract
verification because it produced no committed file (repo_change evidence
requires changed files). Per the task instruction, no source or test files were
modified; generated coverage artifacts (coverage.json, .coverage) remain
gitignored.