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docs: Add CRG C test documentation for hesiod-dns-map
Complete documentation of all 48 tests (unit, integration, property-based, benchmarks). All CRG C requirements met: unit tests, smoke tests, build, P2P, E2E, reflexive, contract, aspect, and benchmarks. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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TEST-NEEDS.md

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# CRG C Test Coverage — FlatRacoon Hesiod DNS Mapping
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**Date:** 2026-04-04
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**Module:** `netstack/modules/hesiod-dns-map/crates/hesiod-lib/`
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**Status:** COMPLETE — All CRG C requirements met
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## Test Coverage Summary
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### Unit Tests (Inline)
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- **Count:** 16 tests
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- **Location:** `src/config.rs`, `src/records.rs`, `src/zone.rs`, `src/server.rs`
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- **Categories:**
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- Configuration parsing (2 tests)
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- Record round-trip serialization (6 tests)
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- Zone operations (4 tests)
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- DNS server resolution (3 tests)
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### Integration Tests
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- **File:** `tests/integration_tests.rs`
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- **Count:** 21 tests
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- **Categories:**
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#### Smoke Tests (1)
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1. `smoke_minimal_zone_lookup` — Basic zone creation and lookup
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#### E2E Tests (2)
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1. `e2e_config_to_zone_pipeline` — Full pipeline: HesiodConfig → HesiodZone → lookups (service, user, group)
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2. `e2e_bind_zone_generation` — BIND zone file generation from config
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#### Reflexive Tests (5)
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1. `reflexive_passwd_round_trip` — PasswdRecord serialize/deserialize
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2. `reflexive_group_round_trip` — GroupRecord serialize/deserialize
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3. `reflexive_service_round_trip` — ServiceRecord serialize/deserialize
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4. `reflexive_filsys_round_trip` — FilsysRecord serialize/deserialize
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5. `reflexive_hesiod_record_enum_round_trip` — HesiodRecord enum round-trip
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#### Contract Tests (5)
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1. `contract_lookup_returns_option` — Lookup returns Some/None, never panics
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2. `contract_lookup_never_panics_on_missing_type` — Wrong MapType returns None, not panic
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3. `contract_zone_empty_initially` — New zone starts at 0 records
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4. `contract_zone_record_count_increments` — record_count() increments correctly
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5. `contract_add_record_overwrites_existing` — Same key overwrites, count unchanged
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#### Aspect Tests (8)
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1. `aspect_empty_string_name_returns_none` — Empty lookup key returns None
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2. `aspect_very_long_name_returns_none` — 10K-char name returns None
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3. `aspect_special_chars_in_name` — Spaces, newlines, nulls, colons handled safely
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4. `aspect_malformed_passwd_txt_returns_err` — Invalid fields error, not panic
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5. `aspect_malformed_service_txt_returns_err` — Invalid port/fields error, not panic
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6. `aspect_malformed_group_txt_returns_err` — Invalid gid/fields error, not panic
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7. `aspect_malformed_filsys_txt_returns_err` — Invalid fields error, not panic
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8. `aspect_record_parse_malformed_map_type` — Invalid map_type string errors gracefully
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### Property-Based Tests
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- **Framework:** proptest 1.4
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- **File:** `tests/property_tests.rs`
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- **Count:** 11 tests
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- **Categories:**
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#### No-Panic Properties (4)
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1. `prop_passwd_record_never_panics` — Random valid passwd fields
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2. `prop_service_record_never_panics` — Random valid service fields
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3. `prop_group_record_never_panics` — Random valid group fields
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4. `prop_filsys_record_never_panics` — Random valid filsys fields
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#### Round-Trip Invariants (4)
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1. `prop_passwd_round_trip_preserves_data` — All fields preserved
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2. `prop_service_round_trip_preserves_data` — All fields preserved
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3. `prop_group_round_trip_preserves_data` — All fields preserved
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4. `prop_filsys_round_trip_preserves_data` — All fields preserved
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#### Edge-Case Properties (3)
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1. `prop_arbitrary_txt_never_panics_on_parse` — Any string input handled gracefully
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2. `prop_map_type_parse_arbitrary_strings` — Invalid map_type strings error, not panic
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3. `prop_very_long_fields_dont_panic` — 1–2K character fields handled
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### Benchmarks
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- **Framework:** Criterion 0.5
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- **File:** `benches/hesiod_bench.rs`
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- **Count:** 9 benchmarks
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- **Baselines:**
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| Benchmark | Purpose |
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|-----------|---------|
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| `zone_new_empty` | Zone creation overhead |
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| `lookup_present_100_records` | Lookup in populated zone (HashMap O(1)) |
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| `lookup_missing_100_records` | Lookup miss performance |
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| `zone_from_config_50svc_100users_20groups` | Large config parsing |
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| `passwd_record_to_txt` | Serialization |
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| `passwd_record_from_txt` | Deserialization |
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| `bind_zone_output_50users_50services` | BIND zone file generation (100 records) |
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| `passwd_record_round_trip` | Full round-trip |
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| `service_record_round_trip` | Full round-trip |
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## Test Execution Results
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```
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Unit tests (inline): 16 passed
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Integration tests: 21 passed
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Property-based tests: 11 passed
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───────────
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Total: 48 passed
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Benchmarks: 9 targets compiled successfully (no run-time failures)
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```
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## CRG C Requirements Met
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| Requirement | Evidence |
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|-------------|----------|
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| **Unit tests** | 16 inline tests in src/ |
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| **Smoke tests** | `smoke_minimal_zone_lookup` + `e2e_*` |
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| **Build** | `cargo build`|
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| **Property-based (P2P)** | 11 proptest tests covering round-trip invariants, no-panic properties, edge cases |
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| **E2E tests** | `e2e_config_to_zone_pipeline`, `e2e_bind_zone_generation` |
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| **Reflexive tests** | 5 round-trip tests (all record types) |
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| **Contract tests** | 5 API invariant tests (lookup returns Option, never panics, record count logic) |
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| **Aspect tests** | 8 security/robustness tests (malformed input, special chars, empty/long names) |
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| **Benchmarks** | 9 Criterion baselines established |
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## Key API Guarantees Validated
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1. **Lookup safety:** `zone.lookup(name, type)` always returns `Option<&HesiodRecord>`, never panics
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2. **Serialization round-trip:** All record types preserve data through TXT encode/decode cycles
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3. **Graceful error handling:** Malformed TXT input returns `Result::Err`, not panic
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4. **Configuration pipeline:** HesiodConfig → HesiodZone builds correctly with 0–100+ records
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5. **BIND zone generation:** Produces valid HS-class TXT record syntax
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6. **Edge-case robustness:** Empty strings, 10K-char names, null bytes, special chars all handled safely
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## Files Added/Modified
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| File | Type | Change |
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|------|------|--------|
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| `crates/hesiod-lib/Cargo.toml` | Modified | Added proptest, criterion dev-dependencies; [[bench]] section |
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| `crates/hesiod-lib/tests/integration_tests.rs` | New | 21 integration tests (E2E, reflexive, contract, aspect, smoke) |
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| `crates/hesiod-lib/tests/property_tests.rs` | New | 11 property-based tests (proptest framework) |
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| `crates/hesiod-lib/benches/hesiod_bench.rs` | New | 9 Criterion benchmarks |
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## SPDX Compliance
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All new test files include SPDX header:
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```
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// SPDX-License-Identifier: PMPL-1.0-or-later
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```
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## Next Steps
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- All CRG C requirements are now satisfied
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- Repository is ready for CRG B upgrade if needed (add doc tests, expand contract coverage)
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- Benchmarks provide baseline for performance regression detection

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