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
+275
@@ -356,4 +356,279 @@ mod tests {
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assert_eq!(parse_status("HTTP/1.1 301 Moved Permanently"), 301);
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assert_eq!(parse_status("garbage"), 0);
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}
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// ── New comprehensive tests ────────────────────────────────────────────────
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/// find_header_end detects the \r\n\r\n separator (RFC 7230 §3 — HTTP header
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/// terminator is CRLF CRLF). Returns the byte position of the first \r.
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/// Mutation: searching for \n\n instead of \r\n\r\n misses the boundary.
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#[test]
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fn find_header_end_locates_crlfcrlf() {
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let data = b"HTTP/1.0 200 OK\r\nContent-Length: 42\r\n\r\nbody starts here";
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// The \r\n\r\n starts at byte 37 (after the Content-Length line).
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let pos = find_header_end(data).expect("must find header end");
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// body starts at pos + 4 (past the \r\n\r\n).
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assert_eq!(
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&data[pos + 4..],
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b"body starts here",
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"body must begin immediately after the \\r\\n\\r\\n boundary"
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);
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}
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/// find_header_end returns None when there is no \r\n\r\n.
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/// Mutation: returning Some(0) unconditionally makes this fail.
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#[test]
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fn find_header_end_returns_none_when_absent() {
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let data = b"no separator here at all";
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assert!(find_header_end(data).is_none());
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}
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/// extract_header is case-insensitive per RFC 7230 §3.2.
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/// Mutation: using case-sensitive comparison misses "location" vs "Location".
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#[test]
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fn extract_header_case_insensitive() {
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let headers = "HTTP/1.1 301 Moved\r\nlocation: http://new.host/path\r\n";
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let val = extract_header(headers, "Location").expect("must find Location");
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assert_eq!(val, "http://new.host/path");
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}
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/// extract_header with a missing header returns None.
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/// Mutation: returning Some("") makes the caller proceed on a missing Location header.
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#[test]
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fn extract_header_missing_returns_none() {
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let headers = "HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n";
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assert!(extract_header(headers, "Location").is_none());
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}
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/// extract_header trims leading/trailing whitespace from the value.
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/// RFC 7230 §3.2.6: optional whitespace around field value.
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/// Mutation: not trimming the value keeps leading spaces in the URL.
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#[test]
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fn extract_header_trims_value_whitespace() {
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let headers = "HTTP/1.1 301 Moved\r\nLocation: /new/path \r\n";
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let val = extract_header(headers, "Location").unwrap();
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assert_eq!(val, "/new/path", "value must be trimmed");
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}
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/// parse_url with no explicit port defaults to 80.
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/// Spec: HTTP default port is 80 (RFC 7230 §2.7.1).
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/// Mutation: defaulting to 443 instead makes plain-HTTP URLs go to the wrong port.
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#[test]
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fn parse_url_no_port_defaults_to_80() {
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let (_, port, _) = parse_url("http://example.com/path").unwrap();
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assert_eq!(port, 80, "default HTTP port must be 80 (RFC 7230 §2.7.1)");
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}
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/// parse_url with explicit port parses it correctly.
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/// Mutation: ignoring the port component and defaulting to 80 changes the port.
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#[test]
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fn parse_url_explicit_port_is_parsed() {
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let (host, port, path) = parse_url("http://mirror.example:9000/key.zip").unwrap();
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assert_eq!(host, "mirror.example");
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assert_eq!(port, 9000);
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assert_eq!(path, "/key.zip");
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}
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/// parse_url with no path component yields "/" as the path.
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/// RFC 7230 §5.3.1: origin-form must start with "/"; empty → root.
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/// Mutation: returning "" as the path makes the HTTP request malformed.
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#[test]
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fn parse_url_no_path_yields_root() {
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let (_, _, path) = parse_url("http://example.com").unwrap();
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assert_eq!(
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path, "/",
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"missing path must default to '/' (RFC 7230 §5.3.1)"
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);
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}
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/// parse_url rejects a URL whose scheme is not http.
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/// Mutation: accepting ftp:// silently leads to a TCP connection receiving
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/// binary FTP data instead of HTTP.
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#[test]
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fn parse_url_rejects_ftp_scheme() {
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assert!(matches!(
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parse_url("ftp://ftp.example.com/file"),
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Err(Error::KeydbUnsupportedScheme { .. })
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));
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}
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/// save() rejects data that is not a valid keydb (no recognisable entries).
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/// Spec: entries are lines starting with "0x", "| DK", "| PK", or "| HC".
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/// Mutation: dropping the entries==0 check lets an empty file be saved.
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#[test]
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fn save_rejects_empty_text() {
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// Plain text with no valid keydb entries.
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let garbage = b"this is not a keydb\njust random text\n";
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assert!(
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matches!(save(garbage), Err(Error::KeydbInvalid)),
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"keydb without valid entries must be rejected"
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);
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}
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/// save() accepts plain text with at least one "0x"-prefixed entry line.
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/// Mutation: counting only "| DK" lines ignores the "0x" entry format.
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#[test]
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fn save_accepts_plaintext_with_0x_entries() {
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// Minimal keydb-style file with a VUK entry (0x-prefixed).
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let content = b"0xDEADBEEFCAFEBABE0102030405060708090A0B0C0D0E0F\n";
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// We can't predict the HOME path in test environments without
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// potentially writing to a real location. So only check that save()
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// accepts this content as valid (may return KeydbWrite if dir exists
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// but we lack permission — that still proves it passed the parse check).
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let result = save(content);
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// Accept either Ok (wrote successfully) or a write error (env issue),
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// but NOT KeydbInvalid or KeydbParse.
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match &result {
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Ok(_) => {}
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Err(Error::KeydbWrite { .. }) => {}
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Err(e) => panic!("unexpected error for valid keydb content: {:?}", e),
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}
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}
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/// save() accepts content with "| DK" entries (device-key table format).
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/// Mutation: only accepting "0x" lines rejects DK-format keydb files.
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#[test]
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fn save_accepts_pipe_dk_entry_format() {
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let content = b"| DK 0102030405060708 | 0102030405060708090a0b0c0d0e0f10 |\n";
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let result = save(content);
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match &result {
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Ok(_) => {}
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Err(Error::KeydbWrite { .. }) => {}
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Err(e) => panic!("unexpected error for DK-format entry: {:?}", e),
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}
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}
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/// save() accepts content with "| PK" entries (processing-key format).
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/// Mutation: not including "| PK" in the filter rejects PK-format keydb files.
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#[test]
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fn save_accepts_pipe_pk_entry_format() {
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let content = b"| PK 0102030405060708090a0b0c0d0e0f10 |\n";
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let result = save(content);
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match &result {
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Ok(_) => {}
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Err(Error::KeydbWrite { .. }) => {}
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Err(e) => panic!("unexpected error for PK-format entry: {:?}", e),
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}
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}
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/// save() accepts content with "| HC" entries (host certificate format).
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/// Mutation: not including "| HC" in the filter rejects HC-format keydb files.
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#[test]
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fn save_accepts_pipe_hc_entry_format() {
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let content = b"| HC 0102030405060708090a0b0c0d0e0f10 |\n";
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let result = save(content);
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match &result {
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Ok(_) => {}
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Err(Error::KeydbWrite { .. }) => {}
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Err(e) => panic!("unexpected error for HC-format entry: {:?}", e),
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}
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}
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/// save() recognises gzip-compressed input (magic bytes 0x1f 0x8b).
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/// Spec: gzip format magic is 0x1F 0x8B (RFC 1952 §2.3.1).
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/// Mutation: treating gzip magic as plain text fails to decompress.
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#[test]
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fn save_recognises_gzip_magic() {
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// Truncated gzip (header only, no valid body) — must not be treated as
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// plain text (no KeydbInvalid about entries), but as a parse error.
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let bad_gz = [0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03];
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let result = save(&bad_gz);
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// A truncated gzip is either KeydbParse (decompression error) or
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// KeydbInvalid (decompressed to empty). Must not be Ok.
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assert!(result.is_err(), "truncated gzip must not be accepted");
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// Crucially: must NOT be a plain-text UTF-8 error — gzip magic is not UTF-8.
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match result.unwrap_err() {
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Error::KeydbParse | Error::KeydbInvalid => {}
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e => panic!("wrong error kind for truncated gzip: {:?}", e),
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}
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}
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/// save() recognises ZIP magic bytes PK\x03\x04 and routes to extract_zip.
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/// Spec: ZIP local file header signature is 0x50 0x4B 0x03 0x04 (PKZIP APPNOTE §4.3.6).
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/// A truncated ZIP must error, but NOT as plain UTF-8 text.
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/// Mutation: checking gzip magic before ZIP magic means ZIP files are
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/// fed to the gzip decoder and produce the wrong error.
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#[test]
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fn save_recognises_zip_magic() {
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// Valid ZIP magic followed by garbage — must be routed to extract_zip.
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let bad_zip = b"PK\x03\x04garbage that is not a real zip";
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let result = save(bad_zip);
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assert!(result.is_err(), "invalid zip must be rejected");
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// Must be a parse error, not a UTF-8 error.
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match result.unwrap_err() {
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Error::KeydbParse | Error::KeydbInvalid => {}
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e => panic!("wrong error for bad zip: {:?}", e),
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}
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}
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/// read_capped_to_string rejects data exceeding MAX_KEYDB_BYTES.
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/// Spec: doc says "Returns Error::KeydbInvalid if the input exceeds the cap".
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/// Mutation: removing the length check accepts decompression bombs.
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#[test]
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fn read_capped_to_string_rejects_oversized_input() {
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// Build a reader that reports it has more data than the cap.
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// We use a Cursor with MAX_KEYDB_BYTES + 1 bytes of content.
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let too_big = vec![b'A'; (MAX_KEYDB_BYTES + 1) as usize];
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let cursor = std::io::Cursor::new(too_big);
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let result = read_capped_to_string(cursor);
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assert!(
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matches!(result, Err(Error::KeydbInvalid)),
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"oversized input must yield KeydbInvalid, got: {:?}",
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result
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);
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}
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/// read_capped_to_string accepts exactly MAX_KEYDB_BYTES (at-cap is allowed).
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/// Spec: doc says "Read one byte past the cap so an exactly-at-cap stream is accepted."
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/// Mutation: using `>=` instead of `>` in the length check rejects valid at-cap files.
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#[test]
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fn read_capped_to_string_accepts_at_cap_size() {
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let at_cap = vec![b'A'; MAX_KEYDB_BYTES as usize];
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let cursor = std::io::Cursor::new(at_cap);
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let result = read_capped_to_string(cursor);
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assert!(result.is_ok(), "exactly MAX_KEYDB_BYTES must be accepted");
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}
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/// parse_url path round-trips: the extracted path is the same string that
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/// was in the URL.
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/// Mutation: dropping the leading '/' from the path breaks the HTTP request.
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#[test]
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fn parse_url_path_includes_leading_slash() {
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let (_, _, path) = parse_url("http://example.com/a/b/c.zip").unwrap();
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assert!(
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path.starts_with('/'),
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"path must start with '/', got `{path}`"
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);
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assert_eq!(path, "/a/b/c.zip");
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}
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/// resolve_redirect with an absolute http URL parses it fresh
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/// (ignores the current host/port entirely).
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/// Mutation: keeping the current host instead of parsing the new one
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/// points the next request at the wrong server.
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#[test]
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fn resolve_redirect_absolute_http_ignores_current_host() {
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let (h, p, path) =
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resolve_redirect("http://new.host:8080/k.zip", "old.host", 9000).unwrap();
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assert_eq!(h, "new.host");
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assert_eq!(p, 8080);
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assert_eq!(path, "/k.zip");
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}
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/// parse_status returns 0 for an empty status line (not a panic).
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/// Mutation: calling unwrap() instead of unwrap_or(0) panics on empty input.
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#[test]
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fn parse_status_empty_input_returns_0() {
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assert_eq!(parse_status(""), 0);
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assert_eq!(parse_status("\r\n"), 0);
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}
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/// parse_status handles HTTP/1.0 and HTTP/1.1 both.
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/// Mutation: only matching "HTTP/1.0 " misses HTTP/1.1 responses.
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#[test]
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fn parse_status_handles_http_versions() {
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assert_eq!(parse_status("HTTP/1.0 404 Not Found"), 404);
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assert_eq!(parse_status("HTTP/1.1 200 OK"), 200);
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assert_eq!(parse_status("HTTP/1.1 302 Found\r\nLocation: /new"), 302);
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}
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}
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