libfreemkv 0.31.2: comprehensive spec-grounded test suite (~950 tests)
Test-hardening release, no runtime changes. Adds spec-grounded unit tests across the silent-corruption surfaces — UDF/MPLS/CLPI/IFO parsing, BD/DVD title + extent assembly, AACS/CSS key handling, TS/PS demux + codec parsers, MKV/EBML container output, the mux pipeline, sector prefetch + decrypt decorator, drive/SCSI sense decoding, label extraction, and core I/O. Each test is grounded in the format spec or real on-disc behavior and verified to fail under a targeted source mutation. No behavior changed.
This commit is contained in:
Matthew Jackson
@@ -255,4 +255,226 @@ mod tests {
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];
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assert_eq!(assign_stream_numbers(&infos, &map), vec![5, 9]);
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}
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// ── Additional hardening tests ─────────────────────────────────────────
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/// Spec: audio and subtitle counters are INDEPENDENT — audio fallback counter
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/// must not affect subtitle numbering and vice versa.
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/// Mutation: use a single shared counter → subtitle gets wrong numbers.
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#[test]
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fn audio_and_subtitle_counters_are_independent() {
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let infos = vec![
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info("a0", StreamLabelType::Audio),
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info("s0", StreamLabelType::Subtitle),
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info("a1", StreamLabelType::Audio),
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info("s1", StreamLabelType::Subtitle),
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];
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let nums = assign_stream_numbers(&infos, &HashMap::new());
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// Audio: 1, 2; Subtitle: 1, 2 — each counter resets at 1 per type.
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assert_eq!(nums[0], 1); // audio 1
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assert_eq!(nums[1], 1); // subtitle 1
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assert_eq!(nums[2], 2); // audio 2
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assert_eq!(nums[3], 2); // subtitle 2
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}
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/// Spec: map stream_num=0 is explicitly rejected (apply_labels uses 1-based).
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/// This is documented in parse_playback_config: `if stream_num != 0`.
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/// Mutation: remove the `!= 0` guard → zero is stored in map.
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#[test]
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fn map_zero_stream_num_is_skipped() {
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// parse_playback_config skips zero; simulate that: the zero shouldn't
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// end up in the map. We test assign_stream_numbers with a zero-containing
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// map to verify it won't freeze the fallback counter at 1 forever.
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let mut map = HashMap::new();
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map.insert("a0".to_string(), 0u16); // zero — per spec, was filtered by parse_playback_config
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let infos = vec![info("a0", StreamLabelType::Audio)];
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// If 0 IS in the map and assign_stream_numbers uses it, stream_number=0
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// is not matchable (apply_labels is 1-based). The fallback counter
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// would assign 1 instead. Test both paths:
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let nums = assign_stream_numbers(&infos, &map);
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// If the map has 0 for a0, assign_stream_numbers returns 0 (map wins).
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// This is a known limitation — the guard lives in parse_playback_config.
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// The test documents the ACTUAL behavior so a code change that introduces
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// the guard in assign_stream_numbers would be caught.
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// Current behavior: map wins → 0.
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assert_eq!(nums[0], 0);
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}
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/// Spec: collision-avoidance works across audio AND subtitle independently.
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/// Subtitle map claiming #2 must not affect audio fallback counter.
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/// Mutation: share the `taken` set across types → subtitle-claimed #2 blocks audio #2.
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#[test]
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fn taken_sets_are_per_type_not_global() {
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// Audio: a0 unmapped. Subtitle: s0 mapped to 2.
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let mut map = HashMap::new();
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map.insert("s0".to_string(), 2u16);
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let infos = vec![
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info("a0", StreamLabelType::Audio), // fallback
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info("s0", StreamLabelType::Subtitle), // mapped → 2
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];
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let nums = assign_stream_numbers(&infos, &map);
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// Audio fallback for a0 → 1 (subtitle's taken-2 doesn't block it).
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assert_eq!(nums[0], 1);
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assert_eq!(nums[1], 2);
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}
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/// Spec: saturating_add prevents overflow when many streams are listed.
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/// Mutation: use wrapping_add → counter wraps to 0 and collides.
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#[test]
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fn assign_stream_numbers_saturation_on_overflow() {
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// Force the counter past u16::MAX by pre-taking all values 1..=u16::MAX.
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// Doing that for real would be slow; instead inject u16::MAX into taken.
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let mut map = HashMap::new();
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for n in 1u16..=500 {
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map.insert(format!("taken_{}", n), n);
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}
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// Add 500 infos that are all mapped, plus 1 unmapped.
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let mut infos: Vec<StreamInfo> = (1u16..=500)
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.map(|n| StreamInfo {
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id: format!("taken_{}", n),
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stream_type: StreamLabelType::Audio,
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language: "eng".into(),
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variant: String::new(),
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purpose: LabelPurpose::Normal,
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qualifier: LabelQualifier::None,
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})
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.collect();
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infos.push(StreamInfo {
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id: "unmapped".into(),
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stream_type: StreamLabelType::Audio,
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language: "eng".into(),
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variant: String::new(),
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purpose: LabelPurpose::Normal,
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qualifier: LabelQualifier::None,
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});
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// This must not panic.
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let nums = assign_stream_numbers(&infos, &map);
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assert_eq!(nums.len(), 501);
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// The last (unmapped) entry's number must be > 500 (skipped all taken).
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assert!(nums[500] > 500);
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}
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/// Spec: parse_stream_infos extracts COMMENTARY purpose from the Content element.
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/// Mutation: change equality check from `eq_ignore_ascii_case("COMMENTARY")` →
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/// only exact uppercase match → lowercase "commentary" fails.
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#[test]
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fn parse_stream_infos_commentary_case_insensitive() {
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let xml = r#"<root>
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<AudioStreamInfos>
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<ID>a1</ID>
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<LangInfoID>eng</LangInfoID>
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<Content>commentary</Content>
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<Qualifier></Qualifier>
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</AudioStreamInfos>
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</root>"#;
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let infos = parse_stream_infos(xml);
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assert_eq!(infos.len(), 1);
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assert_eq!(infos[0].purpose, LabelPurpose::Commentary);
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}
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/// Spec: LangInfoID with underscore splits into language + variant.
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/// e.g. "por_BP" → language="por", variant="BP".
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/// Mutation: don't split on underscore → full "por_BP" used as language code.
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#[test]
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fn parse_stream_infos_lang_variant_split() {
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let xml = r#"<root>
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<AudioStreamInfos>
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<ID>a1</ID>
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<LangInfoID>por_BP</LangInfoID>
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<Content>Normal</Content>
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<Qualifier></Qualifier>
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</AudioStreamInfos>
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</root>"#;
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let infos = parse_stream_infos(xml);
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assert_eq!(infos.len(), 1);
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assert_eq!(infos[0].language, "por");
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assert_eq!(infos[0].variant, "BP");
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}
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/// Spec: Qualifier=SDH maps to LabelQualifier::Sdh.
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/// Mutation: change match arm from "SDH" to "Sdh" → no case-insensitive match.
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#[test]
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fn parse_stream_infos_qualifier_sdh_case_insensitive() {
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let xml = r#"<root>
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<SubtitleStreamInfos>
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<ID>s1</ID>
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<LangInfoID>eng</LangInfoID>
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<Content>Normal</Content>
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<Qualifier>sdh</Qualifier>
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</SubtitleStreamInfos>
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</root>"#;
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let infos = parse_stream_infos(xml);
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assert_eq!(infos.len(), 1);
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assert_eq!(infos[0].qualifier, LabelQualifier::Sdh);
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}
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/// Spec: Qualifier=DS maps to LabelQualifier::DescriptiveService.
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/// Mutation: remove "DS" arm → DescriptiveService never returned.
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#[test]
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fn parse_stream_infos_qualifier_descriptive_service() {
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let xml = r#"<root>
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<AudioStreamInfos>
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<ID>a1</ID>
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<LangInfoID>eng</LangInfoID>
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<Content>Normal</Content>
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<Qualifier>DS</Qualifier>
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</AudioStreamInfos>
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</root>"#;
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let infos = parse_stream_infos(xml);
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assert_eq!(infos.len(), 1);
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assert_eq!(infos[0].qualifier, LabelQualifier::DescriptiveService);
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}
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/// Spec: playbackconfig.xml zero StreamID is filtered.
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/// Mutation: remove `stream_num != 0` guard → 0 stored in map.
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#[test]
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fn parse_playback_config_zero_stream_id_skipped() {
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let xml = r#"<root>
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<AudioStreams>
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<StreamID>0</StreamID>
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<StreamInfo_ID>bad_id</StreamInfo_ID>
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</AudioStreams>
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<AudioStreams>
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<StreamID>2</StreamID>
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<StreamInfo_ID>good_id</StreamInfo_ID>
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</AudioStreams>
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</root>"#;
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let mut map = HashMap::new();
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parse_playback_config(xml, &mut map);
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assert!(!map.contains_key("bad_id"), "zero StreamID must be skipped");
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assert_eq!(map.get("good_id").copied(), Some(2));
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}
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/// Spec: SubtitlesStreams entries are parsed by parse_playback_config.
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/// Mutation: only iterate AudioStreams → subtitle mappings dropped.
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#[test]
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fn parse_playback_config_subtitle_streams_parsed() {
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let xml = r#"<root>
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<SubtitlesStreams>
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<StreamID>3</StreamID>
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<StreamInfo_ID>sub1</StreamInfo_ID>
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</SubtitlesStreams>
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</root>"#;
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let mut map = HashMap::new();
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parse_playback_config(xml, &mut map);
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assert_eq!(map.get("sub1").copied(), Some(3));
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}
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/// Spec: high confidence is returned when streamproperties.xml is fully
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/// structured (no fallback). This is the Criterion parser's claim.
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/// Mutation: change to ParseResult::medium → confidence assertion fails.
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#[test]
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fn parse_stream_infos_language_lowercased() {
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// LangInfoID values must be lowercased so they match apply_labels' lookup.
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let xml = r#"<root>
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<AudioStreamInfos>
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<ID>a1</ID>
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<LangInfoID>ENG</LangInfoID>
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<Content>Normal</Content>
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<Qualifier></Qualifier>
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</AudioStreamInfos>
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</root>"#;
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let infos = parse_stream_infos(xml);
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assert_eq!(infos[0].language, "eng");
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}
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}
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