# QA Results: Feedback Loop UX

## Test Execution Summary

| Suite | Command | Result | Details |
|-------|---------|--------|---------|
| Feedback unit tests | `cargo test --lib -- feedback` | **PASS** | 21 passed, 0 failed |
| Integration tests | `cargo test --test p1_feedback_loop` | **PASS** | 10 passed, 0 failed |
| Full lib suite | `cargo test --lib` | **PASS** | 1352 passed, 0 failed, 0 ignored |
| Format check | `cargo fmt --check` | **PASS** (feedback files) | Pre-existing diffs in unrelated files (metrics/histogram.rs, executor/mod.rs, etc.) |
| Clippy check | `cargo clippy -- -D warnings` | **PASS** (feedback files) | Pre-existing warnings in experiment/mod.rs, ranking/reason.rs only |

## Unit Test Results (21/21 PASS)

| Test | Status |
|------|--------|
| `submit_like_updates_liked_bitmap` | PASS |
| `submit_unlike_removes_from_liked_bitmap` | PASS |
| `submit_hide_adds_hard_neg_and_hidden` | PASS |
| `submit_unhide_removes_hard_neg_and_hidden` | PASS |
| `submit_mute_creator_blocks_creator` | PASS |
| `submit_unmute_creator_unblocks_creator` | PASS |
| `submit_dislike_adds_hard_neg` | PASS |
| `submit_undo_dislike_removes_hard_neg` | PASS |
| `submit_save_and_unsave` | PASS |
| `submit_not_interested_marks_seen` | PASS |
| `skip_escalation_to_hard_neg` | PASS |
| `skip_below_threshold_no_hard_neg` | PASS |
| `feedback_state_after_like` | PASS |
| `feedback_state_after_hide` | PASS |
| `feedback_state_after_dislike` | PASS |
| `feedback_state_after_mute_creator` | PASS |
| `feedback_state_default_all_false` | PASS |
| `unlike_on_never_liked_is_noop` | PASS |
| `unhide_on_never_hidden_writes_signal_ok` | PASS |
| `like_then_dislike_both_states_coexist` | PASS |
| `submit_feedback_with_write_item` | PASS |

## Integration Test Results (10/10 PASS)

| Test | Status |
|------|--------|
| `like_and_unlike_roundtrip` | PASS |
| `hide_and_unhide_roundtrip` | PASS |
| `dislike_and_undo_dislike_roundtrip` | PASS |
| `mute_and_unmute_creator` | PASS |
| `save_and_unsave_roundtrip` | PASS |
| `skip_escalation_at_threshold` | PASS |
| `feedback_state_default_for_unknown_pair` | PASS |
| `multiple_users_independent_feedback` | PASS |
| `negative_preference_update_on_dislike` | PASS |
| `combined_actions_feedback_state` | PASS |

## Regression

Full lib test suite: **1352 passed, 0 failed.** No regressions introduced.

## Edge Cases Verified

- [x] Double-like idempotency: no panic, no double-count
- [x] Unlike on never-liked item: no-op (no error)
- [x] Unhide on never-hidden item: writes signal, no error
- [x] Like then Dislike coexist: both states true, hard-neg exclusion takes precedence
- [x] Multi-user independence: User A's feedback does not affect User B

## Notes

- Pre-existing `cargo fmt` diffs exist in files unrelated to this feature (metrics/histogram.rs, executor/mod.rs, search pipeline, reason.rs, test files). These are from concurrent feature work and do not affect feedback functionality.
- Pre-existing clippy warnings exist in experiment/mod.rs and ranking/reason.rs. These are from concurrent feature work (p1-briefing-ux-reason-labels, pg1-instrumented-metrics).

## Verdict

**PASSED.** All 31 tests (21 unit + 10 integration) pass. Full regression suite (1352 lib tests) clean. Feature is ready for merge.