---
phase: 02-in-memory-backend-and-owner-security
plan: 03
subsystem: testing
tags: [tokio, proptest, integration-tests, owner-isolation, concurrency, property-testing]

requires:
  - phase: 02-in-memory-backend-and-owner-security
    provides: InMemoryTaskStore, TaskSecurityConfig, owner isolation, TTL enforcement
  - phase: 01-foundation-types-and-store-contract
    provides: TaskStore trait, TaskRecord, TaskStatus, TaskError, property test strategies
provides:
  - 34 store integration tests covering CRUD, pagination, TTL, and concurrency
  - 19 security tests covering owner isolation, anonymous access, resource limits, UUID entropy
  - 4 new property tests for store-level invariants (state machine through store, variable merge, ID uniqueness, owner isolation)
affects: [03-handler-integration, 04-dynamodb-backend]

tech-stack:
  added: [futures, uuid (dev-dependency)]
  patterns: [integration test per module, Arc-wrapped store for concurrency tests, proptest with tokio::runtime::Runtime for async property tests]

key-files:
  created:
    - crates/pmcp-tasks/tests/store_tests.rs
    - crates/pmcp-tasks/tests/security_tests.rs
  modified:
    - crates/pmcp-tasks/tests/property_tests.rs
    - crates/pmcp-tasks/Cargo.toml

key-decisions:
  - "Used 1ms TTL with tokio::time::sleep for expiry tests instead of mocking time (simpler, reliable, fast)"
  - "Integration tests cannot access private DashMap fields, so TTL tests use real expiry via short TTL"
  - "Property tests use tokio::runtime::Runtime::new().block_on() inside proptest closures for async store operations"
  - "arb_owner() strategy excludes DEFAULT_LOCAL_OWNER to avoid anonymous access confusion in property tests"

patterns-established:
  - "Async property test pattern: tokio::runtime::Runtime inside proptest! closures for store-level invariant testing"
  - "Security test pattern: verify NotFound error message contains no owner references (information leak prevention)"
  - "Concurrency test pattern: Arc<store> with tokio::spawn and futures::future::join_all"

requirements-completed: [TEST-04, TEST-06, TEST-07]

duration: 7min
completed: 2026-02-21
---

# Phase 02-03: Store, Security, and Property Tests Summary

**34 store CRUD/pagination/TTL/concurrency tests, 19 security isolation/limits tests, and 4 store-level property tests using proptest with async runtime**

## Performance

- **Duration:** 7 min
- **Started:** 2026-02-22T01:00:14Z
- **Completed:** 2026-02-22T01:07:14Z
- **Tasks:** 2
- **Files created:** 2, modified: 2

## Accomplishments
- Comprehensive store integration tests (34 tests) covering all 11 TaskStore methods, cursor-based pagination, TTL enforcement with expiry behavior, and concurrent access with tokio::spawn
- Security tests (19 tests) proving owner isolation across all operations (NotFound on mismatch), anonymous access control, resource limits (max tasks per owner, variable size), and UUID v4 uniqueness
- Extended property tests (4 new) verifying state machine transitions through the store, variable merge null-deletion semantics, task ID uniqueness under arbitrary creation counts, and owner isolation with arbitrary owner pairs

## Task Commits

1. **Task 1: Store CRUD, pagination, TTL, and concurrency tests** - `df4ecbc` (test)
2. **Task 2: Security tests and property test extensions** - `089a6d0` (test)

## Files Created/Modified
- `crates/pmcp-tasks/tests/store_tests.rs` - 34 integration tests in crud_tests, pagination_tests, ttl_tests, concurrency_tests modules
- `crates/pmcp-tasks/tests/security_tests.rs` - 19 tests in owner_isolation_tests, anonymous_access_tests, resource_limit_tests, uuid_entropy_tests modules
- `crates/pmcp-tasks/tests/property_tests.rs` - Extended with 4 Phase 2 store-level property tests and new strategies (arb_owner, arb_variable_map, arb_valid_transition_sequence)
- `crates/pmcp-tasks/Cargo.toml` - Added futures and uuid dev-dependencies

## Decisions Made
- Used real 1ms TTL expiry in tests instead of time mocking for simplicity and reliability
- Property tests use tokio::runtime::Runtime::new().block_on() pattern since proptest does not natively support async
- Owner strategy excludes "local" to prevent false anonymous access rejections in property tests

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 1 - Bug] Fixed clippy unnecessary_get_then_check in memory.rs**
- **Found during:** Task 1
- **Issue:** Existing unit test in memory.rs used `.get("key1").is_none()` which triggers clippy
- **Fix:** Changed to `.contains_key("key1")` negation
- **Files modified:** crates/pmcp-tasks/src/store/memory.rs (auto-fixed by linter)
- **Committed in:** df4ecbc (Task 1 commit)

---

**Total deviations:** 1 auto-fixed (1 bug)
**Impact on plan:** Trivial clippy fix in existing code. No scope creep.

## Issues Encountered
None.

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- Full test coverage for InMemoryTaskStore and security enforcement
- Phase 2 complete: all store, context, security, and test plans executed
- Ready for Phase 3 handler integration with proven store correctness

## Self-Check: PASSED

All files exist, all commits verified:
- store_tests.rs: FOUND
- security_tests.rs: FOUND
- property_tests.rs: FOUND
- 02-03-SUMMARY.md: FOUND
- df4ecbc (Task 1): FOUND
- 089a6d0 (Task 2): FOUND

---
*Phase: 02-in-memory-backend-and-owner-security*
*Completed: 2026-02-21*
