# 0.2.0 Test Hardening Review

Issue: #47
Branch: `feat/issue-47-test-hardening`
Baseline: `origin/develop`
Date: 2026-06-10

## Scope

This review covers the 0.2.0 async and collections test-hardening diff:

- Async cancellation, timeout, shutdown, bounded task-group, join-failure, and task-cleanup behavior.
- Collections error formatting, iterator helper edge cases, `HashMap` ordering contracts, and page metadata policy.
- Rustdoc examples and public API contract comments for newly hardened behavior.

## 7-Tier Review Result

| Tier | Gate | Result | Evidence |
| --- | --- | --- | --- |
| 1 | Scope and API contract | PASS | Public contracts documented for cancellation source drop, join failure index policy, `HashMap` ordering, and page metadata preservation. |
| 2 | Error contract | PASS | `AsyncControlError`, `TaskGroupError`, `CollectionError`, and `PageError` formatting and `source()` behavior are covered by tests. |
| 3 | Async lifecycle | PASS | Cancellation, shutdown, join failure drain, and future-drop task cleanup are covered with bounded Tokio tests. |
| 4 | Stress and determinism | PASS | Bounded concurrency stress tests assert exact peak limits and completion counts; scheduler-dependent join tests were synchronized with `Notify`. |
| 5 | Public docs | PASS | Rustdoc clarifies source-drop semantics, `TaskJoinFailed.index`, `try_map_values` order, `chunked_by`, `frequencies`, `group_by`, and `Page::with_meta`. |
| 6 | Local validation | PASS | Format, whitespace, workspace tests, clippy, rustdoc, and llvm-cov completed successfully. |
| 7 | Subagent review | PASS | Code review subagent: P0=0 P1=0. Test review subagent: initial P1/P2 found, both fixed and re-reviewed as P0=0 P1=0. |

## Findings

P0=0 P1=0

No remaining P0/P1/P2/P3 findings after the final review pass.

The test-review subagent initially reported a P1 scheduler dependency in join-failure drain tests and a P2 missing `map_bounded_collect` future-drop cleanup test. The fix synchronized sibling startup before panic and added the missing public helper cleanup test.

## Coverage

Baseline from the previous 0.2.0 coverage report:

- Workspace: 1379/1585, 87.00%
- `collections`: 349/359, 97.21%
- `async`: 424/481, 88.15%

Final local coverage from `coverage/lcov.info`:

- Workspace: 1693/1912, 88.55%
- `async`: 708/768, 92.19%
- `collections`: 378/388, 97.42%
- `core`: 178/209, 85.17%
- `logging`: 84/107, 78.50%
- `test`: 345/440, 78.41%

## Validation

Commands run:

- `cargo fmt --all --check`
- `git diff --check`
- `cargo test -p bluetape-rs-async --all-features --locked`
- `cargo test -p bluetape-rs-collections --all-features --locked`
- `cargo test --workspace --all-features --locked`
- `cargo clippy --workspace --all-targets --all-features --locked -- -D warnings`
- `RUSTDOCFLAGS="-D warnings" cargo doc --workspace --no-deps --locked`
- `LLVM_COV=/opt/homebrew/Cellar/llvm/22.1.7_1/bin/llvm-cov LLVM_PROFDATA=/opt/homebrew/Cellar/llvm/22.1.7_1/bin/llvm-profdata cargo llvm-cov --workspace --all-features --locked --lcov --output-path coverage/lcov.info`

## DoD Status

| Item | Status | Evidence |
| --- | --- | --- |
| Issue #47 scope implemented | PASS | Async and collections tests, stress coverage, and Rustdoc contracts were hardened. |
| 7-Tier review with subagents | PASS | `code-reviewer` and `test-engineer` subagents completed final review with P0=0 P1=0. |
| P0/P1 blockers resolved | PASS | Initial test-review P1 was fixed and re-reviewed as PASS. |
| Coverage report generated | PASS | `coverage/lcov.info`, workspace line coverage 88.55%. |
| Rust validation | PASS | fmt, diff check, workspace tests, clippy, and rustdoc passed. |
