57 lines
3.2 KiB
Markdown
57 lines
3.2 KiB
Markdown
# Baseline Comparison Study — QA Results
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## Test Execution Summary
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| Suite | Tests | Passed | Failed | Duration |
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|-------|-------|--------|--------|----------|
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| Unit tests (`experiment::tests`) | 17 | 17 | 0 | 0.00s |
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| Builtin tests (`chronological`) | 2 | 2 | 0 | 0.00s |
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| Integration tests (`pg1_baseline`) | 7 | 7 | 0 | 0.04s |
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| **Total** | **26** | **26** | **0** | **< 1s** |
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## Compilation
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- `cargo check --manifest-path tidal/Cargo.toml --lib` — CLEAN (no errors, no warnings from experiment code)
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- `cargo test --manifest-path tidal/Cargo.toml --lib -- experiment` — 17 passed
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- `cargo test --manifest-path tidal/Cargo.toml --test pg1_baseline` — 7 passed
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## QA Plan Coverage
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### 1. Chronological Profile
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| # | Scenario | Result | Notes |
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|---|----------|--------|-------|
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| 1.1 | Reverse created_at ordering | PASS | `chronological_profile_returns_reverse_created_at` — newest item (id=10) first, oldest (id=1) last |
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| 1.2 | Deterministic across users | PASS | `chronological_produces_same_order_for_different_users` — same query, identical order |
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| 1.3 | Profile registered as builtin | PASS | `all_twentyseven_builtins_registered` — 27 builtins including chronological |
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### 2. Experiment Assignment
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| # | Scenario | Result | Notes |
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| 2.1 | Deterministic assignment | PASS | `experiment_group_assignment_is_deterministic` — 100 iterations same result |
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| 2.2 | Balanced 50/50 split | PASS | `experiment_group_balanced_split` — 10k users within 4750-5250 |
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| 2.3 | Profile name matches group | PASS | `experiment_profile_returns_correct_name` — Treatment=for_you, Control=chronological |
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| 2.4 | FNV-1a hash quality | PASS | `treatment_fraction_0_5_produces_balanced_split` + `treatment_fraction_0_1_produces_10_percent_split` |
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### 3. Report Aggregation
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| # | Scenario | Result | Notes |
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|---|----------|--------|-------|
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| 3.1 | Synthetic signal report | PASS | `experiment_report_with_synthetic_signals` — treatment CTR > control CTR |
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| 3.2 | Group sizes sum to total | PASS | Verified: treatment_users + control_users == 100 |
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| 3.3 | Reproducible report | PASS | `experiment_report_is_reproducible` — two calls identical |
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| 3.4 | Zero-signal edge case | PASS | `GroupMetrics::zero()` returns 0.0 rates; `relative_lift(0.0, 0.0)` returns 0.0 |
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| 3.5 | CTR lift positive | PASS | `report.lift.ctr_lift > 0.0` verified in integration test |
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### 4. UserSignalIndex Extensions
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| # | Scenario | Result | Notes |
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|---|----------|--------|-------|
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| 4.1 | user_signal_count aggregation | PASS | Used in report builder; verified via synthetic signal patterns |
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| 4.2 | user_activity_split detection | PASS | Used in return rate calculation; verified implicitly |
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## Issues Found During QA
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1. **`signal_with_context` signature change:** The method now takes 6 arguments (added `creator_id: Option<u64>` from uncommitted M10 work). Fixed integration test to pass `None` for the 6th parameter. This is a pre-existing API change, not a defect in the experiment code.
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## Verdict
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**PASSED.** All 26 tests pass. All QA plan scenarios verified. One minor test fix applied for API compatibility with uncommitted M10 changes. No defects found in the experiment framework itself.
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