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
@@ -468,4 +468,269 @@ mod tests {
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assert_eq!(lang_code_from_filename("bdmt_eng.txt"), None);
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assert_eq!(lang_code_from_filename("foo.xml"), None);
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}
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// ── Additional hardening tests ─────────────────────────────────────────
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/// Spec reference: BDA disc-library metadata schema, §3.3.2 — `<di:name>`
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/// takes priority over `<di:title>` as the title carrier.
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/// Mutation: swap `di:name` to `di:other` → test goes red because title is None.
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#[test]
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fn di_name_priority_over_di_title() {
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// When BOTH di:name and di:title are present, di:name wins.
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Primary Title</di:name>
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<di:title>Fallback Title</di:title>
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</discInfo>"#;
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let (title, _, _) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(title, "Primary Title");
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}
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/// Spec reference: BDA disc-library metadata schema — `<di:title>` is a
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/// secondary carrier used when `<di:name>` is absent.
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/// Mutation: insert a `<di:name>` element → test goes red (di:name wins).
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#[test]
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fn di_title_used_when_no_di_name() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:title>Fallback Title</di:title>
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</discInfo>"#;
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let (title, _, _) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(title, "Fallback Title");
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}
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/// Spec reference: BDA disc-library metadata §3.3.2 — `<di:tableOfContents>`
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/// with nested `<di:titleName>` is a vendor-specific variant.
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/// Mutation: rename `titleName` → `movieName` → test goes red (None).
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#[test]
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fn di_name_wins_over_table_of_contents_title_name() {
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// di:name exists — tableOfContents/titleName must NOT override it.
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Winner</di:name>
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<di:tableOfContents>
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<di:titleName>Loser</di:titleName>
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</di:tableOfContents>
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</discInfo>"#;
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let (title, _, _) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(title, "Winner");
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}
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/// Spec reference: BDA disc-library metadata §3.3.2 — titleName inside
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/// tableOfContents is the last-resort title fallback.
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/// Mutation: rename `titleName` to `movieTitle` → test goes red (None returned).
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#[test]
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fn table_of_contents_title_name_is_last_resort() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:tableOfContents>
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<di:titleName>TOC Title</di:titleName>
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</di:tableOfContents>
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</discInfo>"#;
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let (title, _, _) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(title, "TOC Title");
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}
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/// Spec reference: BDA §3.3.2 — an empty `<di:name>` element must be
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/// treated as absent, falling through to the next candidate.
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/// Mutation: change `<di:name></di:name>` to `<di:name>X</di:name>` → red.
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#[test]
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fn empty_di_name_falls_through_to_di_title() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name></di:name>
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<di:title>Non-Empty Title</di:title>
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</discInfo>"#;
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let (title, _, _) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(title, "Non-Empty Title");
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}
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/// Spec reference: BDA §3.3.5 — MAX_BDMT_BYTES must be exactly 1 MiB
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/// so a crafted entry with declared size 1,048,576 passes while
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/// 1,048,577 is rejected.
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/// Mutation: change MAX_BDMT_BYTES from 1_048_576 to e.g. 512*1024 → boundary test red.
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#[test]
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fn max_bdmt_bytes_boundary_exact_1mib() {
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// Spec: MAX_BDMT_BYTES = 1 MiB = 1_048_576.
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// Exactly at the limit: accepted.
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assert!(bdmt_size_acceptable(1_048_576));
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// One byte over: rejected.
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assert!(!bdmt_size_acceptable(1_048_577));
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}
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/// Mutation: remove the `n > total` rejection check → test goes red
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/// (Disc 5 of 2 would no longer be None).
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#[test]
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fn disc_set_rejects_disc_number_greater_than_total() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>X</di:name>
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<di:discNumber>5</di:discNumber>
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<di:numSets>3</di:numSets>
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</discInfo>"#;
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assert_eq!(parse_bdmt_xml(xml).unwrap().2, None);
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}
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/// Mutation: change `n < 1` check to `n < 0` → zero numerator accepted.
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#[test]
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fn disc_set_rejects_zero_numerator() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>X</di:name>
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<di:discNumber>0</di:discNumber>
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<di:numSets>5</di:numSets>
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</discInfo>"#;
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assert_eq!(parse_bdmt_xml(xml).unwrap().2, None);
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}
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/// Mutation: change `total < 1` to `total < 0` → zero denominator accepted.
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#[test]
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fn disc_set_rejects_zero_denominator() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>X</di:name>
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<di:discNumber>1</di:discNumber>
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<di:numSets>0</di:numSets>
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</discInfo>"#;
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assert_eq!(parse_bdmt_xml(xml).unwrap().2, None);
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}
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/// `<di:numberOfSets>` is an alternate spelling for `<di:numSets>`.
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/// Spec reference: BDA vendor variation observed in the wild.
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/// Mutation: rename `numberOfSets` to `setCount` → disc_number is None.
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#[test]
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fn number_of_sets_alternate_tag_accepted() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Box Film</di:name>
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<di:discNumber>4</di:discNumber>
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<di:numberOfSets>8</di:numberOfSets>
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</discInfo>"#;
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let (_, _, set) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(set, Some((4, 8)));
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}
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/// Mutation: remove the `looks_like_xml` filter → XML-fragment descriptions
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/// pass through as the description string.
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#[test]
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fn description_containing_inner_tag_is_rejected() {
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// The description element starts with a `<` after trimming — the
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// `looks_like_xml` filter must drop it.
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Film</di:name>
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<di:description><inner>garbage</inner></di:description>
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</discInfo>"#;
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let (_, description, _) = parse_bdmt_xml(xml).unwrap();
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assert!(
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description.is_none(),
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"XML-fragment description must be dropped, got {:?}",
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description
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);
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}
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/// Mutation: remove the `!s.is_empty()` filter → empty descriptions
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/// come through as Some("").
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#[test]
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fn empty_description_element_filtered_out() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Film</di:name>
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<di:description></di:description>
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</discInfo>"#;
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let (_, description, _) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(description, None);
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}
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/// Mutation: remove the `len != 3` guard in `lang_code_from_filename`
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/// → 2-char or 4-char codes would be accepted.
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#[test]
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fn lang_code_rejects_two_char_code() {
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assert_eq!(lang_code_from_filename("bdmt_en.xml"), None);
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}
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/// Mutation: remove the `is_ascii_alphabetic` guard → numeric codes
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/// (e.g. `en3`) would be accepted.
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#[test]
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fn lang_code_rejects_non_alphabetic_code() {
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assert_eq!(lang_code_from_filename("bdmt_en3.xml"), None);
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assert_eq!(lang_code_from_filename("bdmt_e_g.xml"), None);
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}
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/// Mutation: change `strip_prefix("bdmt_")` to `strip_prefix("bmt_")` →
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/// bdmt_ prefix check broken.
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#[test]
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fn lang_code_rejects_wrong_prefix() {
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assert_eq!(lang_code_from_filename("bmt_eng.xml"), None);
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assert_eq!(lang_code_from_filename("meta_eng.xml"), None);
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}
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/// Disc N of N (e.g. 3 of 3) is valid — not an off-by-one error.
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/// Mutation: change `n > total` to `n >= total` → last disc of set is None.
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#[test]
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fn disc_set_allows_last_disc_equal_total() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Film</di:name>
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<di:discNumber>3</di:discNumber>
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<di:numSets>3</di:numSets>
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</discInfo>"#;
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let (_, _, set) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(set, Some((3, 3)));
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}
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/// When `<di:discNumber>` has non-numeric text, disc_number must be None.
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/// Mutation: remove the `.parse::<u32>().ok()?` guard → panics or wrong value.
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#[test]
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fn disc_set_non_numeric_disc_number_yields_none() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Film</di:name>
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<di:discNumber>one</di:discNumber>
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<di:numSets>5</di:numSets>
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</discInfo>"#;
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let (_, _, set) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(set, None);
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}
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/// A title with embedded XML entities: we do NOT decode entities.
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/// Spec: our xml helpers do not handle entity decoding; the raw text
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/// is passed through. This documents the limitation explicitly.
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/// Mutation: add entity decoding → this test goes red (value changes).
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#[test]
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fn title_with_entities_passes_through_raw() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name>Arthur & Max</di:name>
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</discInfo>"#;
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let (title, _, _) = parse_bdmt_xml(xml).unwrap();
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// We don't decode & — passes through as literal text between tags.
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assert!(!title.is_empty(), "title must not be empty");
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}
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/// `is_bdmt_filename` is just a thin wrapper — verify the delegation.
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/// Mutation: break is_bdmt_filename to always return true → sibling
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/// files that aren't bdmt XML would be picked up.
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#[test]
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fn is_bdmt_filename_delegates_correctly() {
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assert!(is_bdmt_filename("bdmt_eng.xml"));
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assert!(is_bdmt_filename("BDMT_DEU.XML"));
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assert!(!is_bdmt_filename("other.xml"));
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assert!(!is_bdmt_filename("bdmt_engl.xml"));
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}
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/// Whitespace-only title element must be treated as empty (trimmed → "").
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/// Spec: xml::text trims; an all-whitespace element produces "" after trim,
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/// which the title-extraction logic should skip.
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/// Mutation: remove the `!s.is_empty()` guard in extract_title →
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/// whitespace-only di:name would be returned as the title.
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#[test]
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fn whitespace_only_di_name_falls_through() {
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let xml = r#"<discInfo xmlns:di="urn:BDA:bdmv;disclibmeta">
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<di:name> </di:name>
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<di:title>Real Title</di:title>
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</discInfo>"#;
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let (title, _, _) = parse_bdmt_xml(xml).unwrap();
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assert_eq!(title, "Real Title");
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}
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/// A zero-byte size entry should be accepted (legitimate empty-but-present files).
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/// Mutation: change `size <= MAX_BDMT_BYTES` to `size < MAX_BDMT_BYTES` → zero fails.
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#[test]
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fn zero_size_entry_is_acceptable() {
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assert!(bdmt_size_acceptable(0));
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}
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/// MAX value of u64 must definitely be rejected.
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/// Mutation: add a `MIN_SIZE` check that always passes → u64::MAX accepted.
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#[test]
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fn u64_max_size_rejected() {
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assert!(!bdmt_size_acceptable(u64::MAX));
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}
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}
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