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Tests: Add a test for Matroska EBML lacing

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This commit is contained in:
Zaggy1024
2026-01-28 13:25:06 -06:00
committed by Gregory Bertilson
parent ee95de40d6
commit f455901d37
Notes: github-actions[bot] 2026-02-06 10:57:42 +00:00 
Author: https://github.com/Zaggy1024
Commit: https://github.com/LadybirdBrowser/ladybird/commit/f455901d370
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/7661
2 changed files with 63 additions and 0 deletions
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63
Tests/LibMedia/TestParseMatroska.cpp
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@@ -139,3 +139,66 @@ TEST_CASE(fixed_size_lacing_invalid)
auto frames_or_error = iterator.get_frames(block);
EXPECT(frames_or_error.is_error());
}
TEST_CASE(ebml_lacing)
{
auto file = MUST(Core::File::open("./test-matroska-ebml-lacing.mkv"sv, Core::File::OpenMode::Read));
auto stream = Media::IncrementallyPopulatedStream::create_from_buffer(MUST(file->read_until_eof()));
auto matroska_reader = MUST(Media::Matroska::Reader::from_stream(stream->create_cursor()));
u64 video_track = 0;
MUST(matroska_reader.for_each_track_of_type(Media::Matroska::TrackEntry::TrackType::Video, [&](Media::Matroska::TrackEntry const& track_entry) -> Media::DecoderErrorOr<IterationDecision> {
video_track = track_entry.track_number();
return IterationDecision::Break;
}));
EXPECT_EQ(video_track, 1u);
auto iterator = MUST(matroska_reader.create_sample_iterator(stream->create_cursor(), video_track));
auto block1 = MUST(iterator.next_block());
EXPECT_EQ(block1.lacing(), Media::Matroska::Block::Lacing::EBML);
auto frames1 = MUST(iterator.get_frames(block1));
EXPECT_EQ(frames1.size(), 2u);
EXPECT_EQ(frames1[0].size(), 4u);
EXPECT_EQ(frames1[1].size(), 4u);
auto block2 = MUST(iterator.next_block());
auto frames2 = MUST(iterator.get_frames(block2));
EXPECT_EQ(frames2.size(), 3u);
EXPECT_EQ(frames2[0].size(), 2u);
EXPECT_EQ(frames2[1].size(), 4u);
EXPECT_EQ(frames2[2].size(), 6u);
auto block3 = MUST(iterator.next_block());
auto frames3 = MUST(iterator.get_frames(block3));
EXPECT_EQ(frames3.size(), 3u);
EXPECT_EQ(frames3[0].size(), 6u);
EXPECT_EQ(frames3[1].size(), 4u);
EXPECT_EQ(frames3[2].size(), 2u);
auto block4 = MUST(iterator.next_block());
auto frames4 = MUST(iterator.get_frames(block4));
EXPECT_EQ(frames4.size(), 4u);
EXPECT_EQ(frames4[0].size(), 4u);
EXPECT_EQ(frames4[1].size(), 6u);
EXPECT_EQ(frames4[2].size(), 3u);
EXPECT_EQ(frames4[3].size(), 5u);
auto block5 = MUST(iterator.next_block());
auto frames5 = MUST(iterator.get_frames(block5));
EXPECT_EQ(frames5.size(), 5u);
for (auto const& frame : frames5)
EXPECT_EQ(frame.size(), 3u);
auto block6 = MUST(iterator.next_block());
auto frames6 = MUST(iterator.get_frames(block6));
EXPECT_EQ(frames6.size(), 2u);
EXPECT_EQ(frames6[0].size(), 1u);
EXPECT_EQ(frames6[1].size(), 10u);
auto block7 = MUST(iterator.next_block());
auto frames7 = MUST(iterator.get_frames(block7));
EXPECT_EQ(frames7.size(), 3u);
EXPECT_EQ(frames7[0].size(), 10u);
EXPECT_EQ(frames7[1].size(), 1u);
EXPECT_EQ(frames7[2].size(), 8u);
}

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Tests/LibMedia/test-matroska-ebml-lacing.mkv Normal file
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