gramps
f7d3d1301e
Slice 3 of TASK 65. 606 green, 0 warnings. `ClipLibrary` is the whole of clip "management": a file lands in `clips\` beside the recordings, the oldest is deleted past the retention count, and `Recent()` returns newest-first because that is also the replay layer's playlist order. No gallery, no prompt, no naming. Two guards the tests pin: an **empty snapshot never becomes a zero-byte file** (a save that fails loudly is better than a file that won't open), and **pruning only touches our own prefix** — another file in the folder survives. `RingBytesFor(seconds, bitrate)` is the memory cap the ring is sized with: exact wire size × 1.25 headroom, because bitrate moves and the ring trims whole fragments. Still to come: the replay layer, the F10 hotkey, and the Settings switch.
77 lines
2.6 KiB
C#
77 lines
2.6 KiB
C#
using System;
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using System.IO;
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using System.Linq;
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using Xunit;
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using ytLive.Services;
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namespace ytLive.Tests;
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/// <summary>
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/// TASK 65 slice 3 — clips on disk, with retention and nothing else.
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///
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/// <para>The rule: write one file, delete the oldest past the count. No gallery, no prompt. The tests pin
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/// the two ways that could go wrong — a zero-byte clip from an empty ring, and pruning taking something
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/// that isn't ours.</para>
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/// </summary>
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public sealed class ClipLibraryTests : IDisposable
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{
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private readonly string _root = Path.Combine(Path.GetTempPath(), $"ytLlive-clips-{Guid.NewGuid():N}");
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public ClipLibraryTests() => Directory.CreateDirectory(_root);
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public void Dispose()
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{
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try { Directory.Delete(_root, recursive: true); } catch { /* best effort */ }
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}
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private ClipLibrary Library() => new(() => _root);
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[Fact]
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public void SaveWritesIntoClipsBesideTheRecordings()
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{
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var path = Library().Save(new byte[] { 1, 2, 3 }, DateTime.Now, keep: 3);
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Assert.NotNull(path);
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Assert.EndsWith(".mp4", path);
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Assert.Equal(Path.Combine(_root, "clips"), Path.GetDirectoryName(path));
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Assert.True(File.Exists(path));
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}
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[Fact]
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public void AnEmptySnapshotNeverBecomesAZeroByteFile()
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{
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Assert.Null(Library().Save(Array.Empty<byte>(), DateTime.Now, keep: 3));
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Assert.False(Directory.Exists(Path.Combine(_root, "clips"))
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&& Directory.EnumerateFiles(Path.Combine(_root, "clips")).Any());
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}
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[Fact]
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public void RetentionKeepsTheNewestAndDeletesTheRest()
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{
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var library = Library();
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var folder = library.EnsureFolder();
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for (var i = 0; i < 6; i++)
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File.WriteAllText(Path.Combine(folder, $"clip-20261110-12000{i}.mp4"), "x");
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File.WriteAllText(Path.Combine(folder, "someone-elses-file.mp4"), "keep me");
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var removed = library.Prune(keep: 3);
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Assert.Equal(3, removed);
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var remaining = library.Recent();
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Assert.Equal(3, remaining.Count);
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Assert.Contains("120005", remaining[0]); // newest first
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Assert.True(File.Exists(Path.Combine(folder, "someone-elses-file.mp4")));
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}
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[Fact]
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public void RingBytesFollowLengthAndBitrate_WithHeadroom()
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{
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var tenAt8 = ClipLibrary.RingBytesFor(10, 8000);
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var fifteenAt8 = ClipLibrary.RingBytesFor(15, 8000);
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Assert.True(tenAt8 > 10L * 8000 * 1000 / 8); // more than the exact wire size
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Assert.True(fifteenAt8 > tenAt8);
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Assert.True(tenAt8 < 15L * 1024 * 1024); // and still modest
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}
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}
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