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| 1 | +# CRG C Test Coverage — FlatRacoon Hesiod DNS Mapping |
| 2 | + |
| 3 | +**Date:** 2026-04-04 |
| 4 | +**Module:** `netstack/modules/hesiod-dns-map/crates/hesiod-lib/` |
| 5 | +**Status:** COMPLETE — All CRG C requirements met |
| 6 | + |
| 7 | +## Test Coverage Summary |
| 8 | + |
| 9 | +### Unit Tests (Inline) |
| 10 | +- **Count:** 16 tests |
| 11 | +- **Location:** `src/config.rs`, `src/records.rs`, `src/zone.rs`, `src/server.rs` |
| 12 | +- **Categories:** |
| 13 | + - Configuration parsing (2 tests) |
| 14 | + - Record round-trip serialization (6 tests) |
| 15 | + - Zone operations (4 tests) |
| 16 | + - DNS server resolution (3 tests) |
| 17 | + |
| 18 | +### Integration Tests |
| 19 | +- **File:** `tests/integration_tests.rs` |
| 20 | +- **Count:** 21 tests |
| 21 | +- **Categories:** |
| 22 | + |
| 23 | +#### Smoke Tests (1) |
| 24 | +1. `smoke_minimal_zone_lookup` — Basic zone creation and lookup |
| 25 | + |
| 26 | +#### E2E Tests (2) |
| 27 | +1. `e2e_config_to_zone_pipeline` — Full pipeline: HesiodConfig → HesiodZone → lookups (service, user, group) |
| 28 | +2. `e2e_bind_zone_generation` — BIND zone file generation from config |
| 29 | + |
| 30 | +#### Reflexive Tests (5) |
| 31 | +1. `reflexive_passwd_round_trip` — PasswdRecord serialize/deserialize |
| 32 | +2. `reflexive_group_round_trip` — GroupRecord serialize/deserialize |
| 33 | +3. `reflexive_service_round_trip` — ServiceRecord serialize/deserialize |
| 34 | +4. `reflexive_filsys_round_trip` — FilsysRecord serialize/deserialize |
| 35 | +5. `reflexive_hesiod_record_enum_round_trip` — HesiodRecord enum round-trip |
| 36 | + |
| 37 | +#### Contract Tests (5) |
| 38 | +1. `contract_lookup_returns_option` — Lookup returns Some/None, never panics |
| 39 | +2. `contract_lookup_never_panics_on_missing_type` — Wrong MapType returns None, not panic |
| 40 | +3. `contract_zone_empty_initially` — New zone starts at 0 records |
| 41 | +4. `contract_zone_record_count_increments` — record_count() increments correctly |
| 42 | +5. `contract_add_record_overwrites_existing` — Same key overwrites, count unchanged |
| 43 | + |
| 44 | +#### Aspect Tests (8) |
| 45 | +1. `aspect_empty_string_name_returns_none` — Empty lookup key returns None |
| 46 | +2. `aspect_very_long_name_returns_none` — 10K-char name returns None |
| 47 | +3. `aspect_special_chars_in_name` — Spaces, newlines, nulls, colons handled safely |
| 48 | +4. `aspect_malformed_passwd_txt_returns_err` — Invalid fields error, not panic |
| 49 | +5. `aspect_malformed_service_txt_returns_err` — Invalid port/fields error, not panic |
| 50 | +6. `aspect_malformed_group_txt_returns_err` — Invalid gid/fields error, not panic |
| 51 | +7. `aspect_malformed_filsys_txt_returns_err` — Invalid fields error, not panic |
| 52 | +8. `aspect_record_parse_malformed_map_type` — Invalid map_type string errors gracefully |
| 53 | + |
| 54 | +### Property-Based Tests |
| 55 | +- **Framework:** proptest 1.4 |
| 56 | +- **File:** `tests/property_tests.rs` |
| 57 | +- **Count:** 11 tests |
| 58 | +- **Categories:** |
| 59 | + |
| 60 | +#### No-Panic Properties (4) |
| 61 | +1. `prop_passwd_record_never_panics` — Random valid passwd fields |
| 62 | +2. `prop_service_record_never_panics` — Random valid service fields |
| 63 | +3. `prop_group_record_never_panics` — Random valid group fields |
| 64 | +4. `prop_filsys_record_never_panics` — Random valid filsys fields |
| 65 | + |
| 66 | +#### Round-Trip Invariants (4) |
| 67 | +1. `prop_passwd_round_trip_preserves_data` — All fields preserved |
| 68 | +2. `prop_service_round_trip_preserves_data` — All fields preserved |
| 69 | +3. `prop_group_round_trip_preserves_data` — All fields preserved |
| 70 | +4. `prop_filsys_round_trip_preserves_data` — All fields preserved |
| 71 | + |
| 72 | +#### Edge-Case Properties (3) |
| 73 | +1. `prop_arbitrary_txt_never_panics_on_parse` — Any string input handled gracefully |
| 74 | +2. `prop_map_type_parse_arbitrary_strings` — Invalid map_type strings error, not panic |
| 75 | +3. `prop_very_long_fields_dont_panic` — 1–2K character fields handled |
| 76 | + |
| 77 | +### Benchmarks |
| 78 | +- **Framework:** Criterion 0.5 |
| 79 | +- **File:** `benches/hesiod_bench.rs` |
| 80 | +- **Count:** 9 benchmarks |
| 81 | +- **Baselines:** |
| 82 | + |
| 83 | +| Benchmark | Purpose | |
| 84 | +|-----------|---------| |
| 85 | +| `zone_new_empty` | Zone creation overhead | |
| 86 | +| `lookup_present_100_records` | Lookup in populated zone (HashMap O(1)) | |
| 87 | +| `lookup_missing_100_records` | Lookup miss performance | |
| 88 | +| `zone_from_config_50svc_100users_20groups` | Large config parsing | |
| 89 | +| `passwd_record_to_txt` | Serialization | |
| 90 | +| `passwd_record_from_txt` | Deserialization | |
| 91 | +| `bind_zone_output_50users_50services` | BIND zone file generation (100 records) | |
| 92 | +| `passwd_record_round_trip` | Full round-trip | |
| 93 | +| `service_record_round_trip` | Full round-trip | |
| 94 | + |
| 95 | +## Test Execution Results |
| 96 | + |
| 97 | +``` |
| 98 | +Unit tests (inline): 16 passed |
| 99 | +Integration tests: 21 passed |
| 100 | +Property-based tests: 11 passed |
| 101 | + ─────────── |
| 102 | + Total: 48 passed |
| 103 | +
|
| 104 | +Benchmarks: 9 targets compiled successfully (no run-time failures) |
| 105 | +``` |
| 106 | + |
| 107 | +## CRG C Requirements Met |
| 108 | + |
| 109 | +| Requirement | Evidence | |
| 110 | +|-------------|----------| |
| 111 | +| **Unit tests** | 16 inline tests in src/ | |
| 112 | +| **Smoke tests** | `smoke_minimal_zone_lookup` + `e2e_*` | |
| 113 | +| **Build** | `cargo build` ✓ | |
| 114 | +| **Property-based (P2P)** | 11 proptest tests covering round-trip invariants, no-panic properties, edge cases | |
| 115 | +| **E2E tests** | `e2e_config_to_zone_pipeline`, `e2e_bind_zone_generation` | |
| 116 | +| **Reflexive tests** | 5 round-trip tests (all record types) | |
| 117 | +| **Contract tests** | 5 API invariant tests (lookup returns Option, never panics, record count logic) | |
| 118 | +| **Aspect tests** | 8 security/robustness tests (malformed input, special chars, empty/long names) | |
| 119 | +| **Benchmarks** | 9 Criterion baselines established | |
| 120 | + |
| 121 | +## Key API Guarantees Validated |
| 122 | + |
| 123 | +1. **Lookup safety:** `zone.lookup(name, type)` always returns `Option<&HesiodRecord>`, never panics |
| 124 | +2. **Serialization round-trip:** All record types preserve data through TXT encode/decode cycles |
| 125 | +3. **Graceful error handling:** Malformed TXT input returns `Result::Err`, not panic |
| 126 | +4. **Configuration pipeline:** HesiodConfig → HesiodZone builds correctly with 0–100+ records |
| 127 | +5. **BIND zone generation:** Produces valid HS-class TXT record syntax |
| 128 | +6. **Edge-case robustness:** Empty strings, 10K-char names, null bytes, special chars all handled safely |
| 129 | + |
| 130 | +## Files Added/Modified |
| 131 | + |
| 132 | +| File | Type | Change | |
| 133 | +|------|------|--------| |
| 134 | +| `crates/hesiod-lib/Cargo.toml` | Modified | Added proptest, criterion dev-dependencies; [[bench]] section | |
| 135 | +| `crates/hesiod-lib/tests/integration_tests.rs` | New | 21 integration tests (E2E, reflexive, contract, aspect, smoke) | |
| 136 | +| `crates/hesiod-lib/tests/property_tests.rs` | New | 11 property-based tests (proptest framework) | |
| 137 | +| `crates/hesiod-lib/benches/hesiod_bench.rs` | New | 9 Criterion benchmarks | |
| 138 | + |
| 139 | +## SPDX Compliance |
| 140 | + |
| 141 | +All new test files include SPDX header: |
| 142 | +``` |
| 143 | +// SPDX-License-Identifier: PMPL-1.0-or-later |
| 144 | +``` |
| 145 | + |
| 146 | +## Next Steps |
| 147 | + |
| 148 | +- All CRG C requirements are now satisfied |
| 149 | +- Repository is ready for CRG B upgrade if needed (add doc tests, expand contract coverage) |
| 150 | +- Benchmarks provide baseline for performance regression detection |
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