104 lines
3.5 KiB
C#
104 lines
3.5 KiB
C#
using TeleWave.Domain.Broadcast.Live;
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using Xunit;
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namespace TeleWave.Domain.Tests.Broadcast;
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public class LiveWindowCalculatorTests
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{
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private static readonly DateTimeOffset Epoch = new(2026, 1, 1, 0, 0, 0, TimeSpan.Zero);
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private const int Seg = 2;
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private const int Window = 5;
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private static LiveInput Input(
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double nowOffsetSeconds,
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IReadOnlyList<LiveEntry> entries,
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LiveFiller? filler = null
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) =>
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new(
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Now: Epoch.AddSeconds(nowOffsetSeconds),
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Epoch: Epoch,
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SegmentSeconds: Seg,
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WindowSegments: Window,
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Entries: entries,
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Filler: filler
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);
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[Fact]
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public void SingleEntry_ProducesWindowWithMonotonicMediaSequence()
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{
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var asset = Guid.NewGuid();
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var entries = new List<LiveEntry> { new(Epoch, Epoch.AddSeconds(100), asset, 50) };
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// now = epoch + 20s → currentIndex = 10, окно [6..10].
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var playlist = LiveWindowCalculator.Build(Input(20, entries));
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Assert.Equal(6, playlist.MediaSequence);
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Assert.Equal(Seg, playlist.TargetDuration);
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Assert.Equal(5, playlist.Segments.Count);
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Assert.Equal([6, 7, 8, 9, 10], playlist.Segments.Select(s => s.LocalIndex));
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Assert.All(playlist.Segments, s => Assert.Equal(asset, s.AssetId));
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Assert.DoesNotContain(playlist.Segments, s => s.Discontinuity);
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}
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[Fact]
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public void EntryBoundary_InsertsDiscontinuity()
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{
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Guid a = Guid.NewGuid(),
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b = Guid.NewGuid();
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var entries = new List<LiveEntry>
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{
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new(Epoch, Epoch.AddSeconds(16), a, 8), // g0..7
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new(Epoch.AddSeconds(16), Epoch.AddSeconds(40), b, 12), // g8..
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};
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var playlist = LiveWindowCalculator.Build(Input(20, entries));
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Assert.Equal(6, playlist.MediaSequence);
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Assert.Equal([a, a, b, b, b], playlist.Segments.Select(s => s.AssetId));
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// DISCONTINUITY только перед первым сегментом B (индекс 2 в окне).
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Assert.Equal(
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[false, false, true, false, false],
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playlist.Segments.Select(s => s.Discontinuity)
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);
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}
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[Fact]
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public void Gap_WithFiller_LoopsFiller()
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{
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var filler = new LiveFiller(Guid.NewGuid(), 4);
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var playlist = LiveWindowCalculator.Build(Input(20, [], filler));
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Assert.Equal(6, playlist.MediaSequence);
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Assert.Equal(5, playlist.Segments.Count);
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Assert.Equal([2, 3, 0, 1, 2], playlist.Segments.Select(s => s.LocalIndex));
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Assert.All(playlist.Segments, s => Assert.Equal(filler.AssetId, s.AssetId));
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}
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[Fact]
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public void LeadingGap_WithoutFiller_TrimmedFromWindowStart()
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{
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var b = Guid.NewGuid();
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var entries = new List<LiveEntry>
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{
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new(Epoch.AddSeconds(16), Epoch.AddSeconds(40), b, 12),
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};
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// Окно [6..10]: g6,g7 без записи и без филлера → отброшены, старт с g8.
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var playlist = LiveWindowCalculator.Build(Input(20, entries));
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Assert.Equal(8, playlist.MediaSequence);
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Assert.Equal(3, playlist.Segments.Count);
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Assert.Equal([0, 1, 2], playlist.Segments.Select(s => s.LocalIndex));
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Assert.DoesNotContain(playlist.Segments, s => s.Discontinuity);
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}
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[Fact]
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public void BeforeEpoch_ReturnsEmpty()
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{
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var playlist = LiveWindowCalculator.Build(Input(-10, []));
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Assert.Empty(playlist.Segments);
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}
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}
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