gramps
41b0cd6e98
ScoreboardTiles decides which of the eight facts appear and shapes their text (money uses the
session's dominant currency and flags a second one rather than converting; watch hours carry
'as of {date}' because Analytics is a daily aggregate). Tiles are OPT-IN, so 'None' really means the
layer draws nothing, and 'Default' is the six session facts.
ScoreboardPresenter owns the raster cache: ScoreboardRecorder.Changed fires only on a visible change,
so the strip rebuilds only then — a per-tick raster would be the compositor's most expensive layer
for identical pixels.
Guard: ScoreboardPresenterTests asserts the cache identity (same instance when nothing moved, a new
frame when a value moved, reuse when a recipient-side gift event arrives) and that an empty selection
returns no frame at all.
66 lines
2.5 KiB
C#
66 lines
2.5 KiB
C#
using System.Threading;
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using Xunit;
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using ytLive.Models;
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using ytLive.Services.Compositor;
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namespace ytLive.Tests;
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/// <summary>The strip's cache is a performance rule with teeth: it must rebuild when a displayed
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/// value moves and must NOT rebuild otherwise, or the compositor pays for a raster per tick into
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/// pixels that did not change.</summary>
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public class ScoreboardPresenterTests
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{
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private static ChatMessage Member(string name) => new() { Kind = ChatEventKind.NewMember, AuthorName = name };
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[Fact]
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public void The_strip_rebuilds_only_when_a_displayed_value_moves()
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{
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System.Exception? failure = null;
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var thread = new Thread(() =>
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{
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try
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{
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var recorder = new ScoreboardRecorder();
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var tiles = new ScoreboardTiles
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{
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SuperChats = false, WatchHours = false, Subscribers = false,
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NewMembers = true, Milestones = false, LastMember = true,
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LastSuperChat = false, LastGift = false,
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};
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var presenter = new ScoreboardPresenter(recorder, new ScoreboardStyle());
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presenter.SetTiles(tiles);
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// Before a session: nothing counted, nothing to draw.
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Assert.Null(presenter.Frame);
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recorder.StartSession();
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recorder.Record(Member("First"));
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var first = presenter.Frame;
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Assert.NotNull(first);
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// No change: the SAME frame instance comes back (cache hit).
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Assert.Same(first, presenter.Frame);
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// A visible change: a new frame.
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recorder.Record(Member("Second"));
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var second = presenter.Frame;
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Assert.NotNull(second);
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Assert.NotSame(first, second);
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// A gift-recipient event changes nothing displayed, so the raster is reused.
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recorder.Record(new ChatMessage { Kind = ChatEventKind.GiftReceived, AuthorName = "Recipient" });
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Assert.Same(second, presenter.Frame);
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// Disabling every tile returns no frame, and the layer draws nothing.
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presenter.SetTiles(ScoreboardTiles.None);
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Assert.Null(presenter.Frame);
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}
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catch (System.Exception ex) { failure = ex; }
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});
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thread.SetApartmentState(ApartmentState.STA);
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thread.Start();
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thread.Join();
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Assert.Null(failure);
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}
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}
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