# Test-Specialist Agent — Persistent Memory

> **Persistent diary cross-session.** Auto-injected first 200 lines / 25KB at spawn.
> Update BEFORE every stop. Tiered Memory v1: L1 HOT soft-cap ~30KB · L2 `archive/` on-demand · L3 RAG `search_memory` just-in-time. Keep entry ≤ 1.5K chars (gotcha #53).
> **NEW agent S39 (2026-05-29)** — dedicated test layer (tách khỏi implementer Case 3).

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## 🎯 Role baseline

WRITE specialist độc quyền `tests/**`. xUnit + FluentAssertions 7.2 + EF SQLite TestApplicationDbContext + IdentityFixture. Tools: Read, Edit, Write, Bash, Grep, Glob + 5 RAG. Skills: `contract-workflow` + `permission-matrix`.

## 🚫 Split boundary
- ✅ MINE: `tests/SolutionErp.{Domain,Infrastructure}.Tests/**`
- ❌ NOT: production code `src/Backend/**` + `fe-*/**` → test reveal bug → REPORT em main, KHÔNG fix
- ❌ NOT: decide WHAT to test (test plan) → em main + reviewer chốt priority

## 📊 Baseline 152 PASS (58 Domain + 94 Infra)  ← S43 +8 LeaveBalance + repaired 2 template terminal FK-fail
Run: `dotnet test SolutionErp.slnx --nologo --verbosity minimal`

### ⚠️ Pattern: deduction hook FK → seed LeaveType cho terminal test (S43)
LeaveBalance → LeaveType `Restrict` FK. ApproveLeaveRequestHandler terminal branch (DaDuyet) insert LeaveBalance. Test đi tới DaDuyet PHẢI seed 1 LeaveType row + LeaveRequest.LeaveTypeId = type.Id (KHÔNG random Guid → FK fail SQLite Error 19). Non-terminal (advance/reject/return/OtRequest) KHÔNG cần (OtRequest no hook). BuildLeave thêm optional `leaveTypeId` default random (giữ test cũ non-terminal). Year = StartDate.Year. Negative allowed (no quota guard → Remaining<0 OK). Query lazy synth Entitled=DaysPerYear khi 0 row.

## ⏱️ Timing rules (docs/rules.md §7)
- Feature mới = test-after (UAT ổn → viết, Phase 9 skip per `feedback_uat_skip_verify`)
- Bug fix = test-before BẮT BUỘC (reproduce → fix)
- Critical algo = test-before merge (codegen/guard/financial/security)
- Skip: DTO mapping, CRUD master, FE snapshot

## 📋 Patterns proven (apply confidently)

### Pattern 10 Reflection authz regression (~50 LOC)
Catch class-level `[Authorize(Policy=...)]` regression: `typeof(Ctrl).GetCustomAttribute<AuthorizeAttribute>().Policy.Should().Be(...)`. KHÔNG WebApplicationFactory heavy. Cho gotcha #44 silent 403.

### Pattern 11 Test infra helper cookie-cutter
`SeedWorkflowAsync` (1 Step DepartmentId=null skip FK + 2 Levels) + `SeedApproversAsync` (N user fix.CreateUserAsync). Reusable PE/Contract/Proposal workflow test.

### Pattern 12 InternalsVisibleTo
Expose internal helper via `<InternalsVisibleTo Include="SolutionErp.Infrastructure.Tests" />` csproj.

### Spec drift detection BEFORE write (S34 lesson)
Test theo CODE (single source truth), document mismatch header comment + report. Vd soft-delete UNIQUE: code chặn opt-out → test theo code, flag drift.

### gotcha #48 SQLite tie-break
`OrderByDescending(CreatedAt).First()` pick wrong khi 2+ Add() cùng CreatedAt frozen-clock → discriminator filter `.Where(Summary.Contains("Chuyển phase"))` BEFORE OrderBy.

## 🎯 Coverage gap backlog (priority — Reviewer flagged S36)
1. **CRITICAL:** HrmConfig 16 endpoint (S35) — Holiday composite UNIQUE (Year,Date) Update 0 test
2. **MAJOR:** EmployeeSatellite 15 endpoint (S34) — cascade + FK invariant 0 test
3. **MAJOR:** gotcha #44 regression MISS EmployeesController + HrmConfigsController
4. Phase 10.3 Proposal ApproveV2 (S37) + Workflow Apps skeleton (S38) — test-after khi UAT confirm

## 📅 Recent activity (last 10 FIFO)

- **2026-05-29 (S40 baseline audit smoke):** CONFIRMED 130 PASS (Domain 58 + Infra 72), 0 fail/skip, ~15s. Runner count authoritative; raw `[Fact]/[Theory]` attr = 48+70 (Theory→InlineData expand). Infra spread 15 files. Gap re-verified vs prod: EmployeesController+HrmConfigsController EXIST, authz regression chỉ ApprovalWorkflowsV2Controller (gotcha #44 gap real). Proposal = Domain entity + EF config only, CHƯA có ApproveV2Async service (S37 skeleton, defer đúng). Agent load OK. AUDIT-only, no write.
- **2026-05-30 (S42 P11-A Wave4):** +11 test `tests/.../Application/WorkflowAppApproveV2Tests.cs` → **141 PASS** (Infra 72→83). LeaveRequest 8 case full (Submit happy/guard×2, Approve advance/terminal/UPSERT-invariant/forbidden/empty-comment-placeholder, Reject→TuChoi, Return→TraLai+RejectedFromStatus) + OtRequest smoke (submit→approve single-level→DaDuyet). **No prod bug** — LeaveOt ApproveV2 wire correct, all PASS first run. **NEW Pattern:** WorkflowApps handlers = CQRS MediatR (KHÔNG service) → instantiate handler trực tiếp `new ApproveLeaveRequestHandler(db, AsUser(u), clock).Handle(cmd,ct)`, chỉ 3 dep (IApplicationDbContext + TestCurrentUser + FixedDateTime) — nhẹ hơn 6-dep Contract service. MaDonTu format "DT/LR/2026/001". Gap #4 (Workflow Apps) PARTIAL done — Travel/Vehicle mirror pending. ⚠️ Lesson: CWD drift (fe-user) → ghi MEMORY nhầm path, em main relocate. Verify CWD root trước Write memory.
- **2026-05-30 (S43 P11-B Wave3 LeaveBalance):** +8 test `tests/.../Application/LeaveBalanceTests.cs` → **152 PASS** (Infra 86→94). Deduction hook (ApproveLeaveRequestHandler terminal) full: deduct single-level (create row from DaysPerYear), only-at-terminal multi-level (advance no-deduct + 1× terminal), accumulate UPSERT (5+2=7 no new row), negative allowed (Used20>Entitled12 → Remaining−8 no throw), Reject+Return no-deduct (split 5a/5b), GetMyLeaveBalances lazy synth (2 active type filter inactive), AdjustLeaveBalance upsert. **⚠️ FOUND + FIXED 2 pre-existing RED** in S42 template (`Approve_LastLevel_TransitionsToDaDuyet` + `Approve_EmptyComment_StoresPlaceholder`): Wave 1 deduction hook (uncommitted, prod) làm terminal insert LeaveBalance FK→LeaveTypes Restrict FAIL vì BuildLeave dùng `LeaveTypeId=Guid.NewGuid()`. **NOT prod bug** (prod đơn luôn pin LeaveType thật) — fix tại test: BuildLeave +optional leaveTypeId, seed LeaveType ở 2 test đó. Baseline thật trước S43 = 142-pass/2-RED (KHÔNG phải 144-green). REPORTED em main.

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## ⚠️ Anti-patterns (DO NOT)
1. ❌ Touch production code → REPORT bug · 2. ❌ Skip MEMORY · 3. ❌ Test không chạy (dotnet test must PASS) · 4. ❌ `git add -A` · 5. ❌ Push remote · 6. ❌ Assertion trivial

## 🔄 Curate trigger
Size > 25KB → archive. Commit scope (em main commits): `Tests`.