gramps
9528128ca7
The creator (2026-10-30): the brand-logo field in App Settings showed only a file NAME, so a myopic user could not confirm which picture was set. Now a 28x28 thumbnail sits left of the field showing the actual image, and hovering it opens an enlarged copy (up to 420x320) beside the panel with the file name underneath. A click collapses it; moving the pointer away closes it, unless the pointer walked onto the popup itself, where it stays so the creator can look closely. Mechanics: - `MainViewModel.BrandLogoPreviewImage` decodes the stored asset ONCE and freezes it, so the thumbnail and the enlargement share one bitmap and no dispatcher hop is needed. A corrupt image returns null instead of taking the dialog down. - The thumbnail is hidden when no image is set (NotNullToVis), so there is nothing to hover and no empty frame can appear. - The popup is a separate window: WPF refuses to open one until its placement target is in a live visual tree, which is why the test hosts the control in a real window rather than asserting on a detached control. Guard: BrandLogoPreviewTests — the wiring (image binding, the no-image gate, the four gesture handlers, the readable enlargement size) and the control's open/close behaviour.
61 lines
2.7 KiB
C#
61 lines
2.7 KiB
C#
using Xunit;
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namespace ytLive.Tests;
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/// <summary>The creator (2026-10-30): in App Settings the brand-logo field is only a file NAME,
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/// which says nothing about the picture, so "myopic users like myself" cannot confirm what is
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/// set. The field now carries a thumbnail — hover enlarges it, a click collapses it.
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///
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/// <para>The ONE test covers both halves: the XAML wiring that routes hover/leave/click, and the
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/// control's own open/close behaviour (a Popup is a separate window, so only this seam can
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/// observe it). Runs inside the real App because the control resolves theme resources at load.</para></summary>
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[Collection("RealApp")]
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public class BrandLogoPreviewTests
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{
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private readonly RealAppHost _app;
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public BrandLogoPreviewTests(RealAppHost app) => _app = app;
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[Fact]
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public void Hovering_the_thumbnail_opens_the_enlarged_preview_and_a_click_collapses_it()
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{
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// 1. Wiring: the thumbnail is image-bound and hidden when no image is set, the enlarged
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// popup shows the same source at a readable size, and every gesture reaches a handler.
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var xaml = SourceAssert.Text("Controls", "OverlayHost.xaml");
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Assert.Contains("x:Name=\"BrandLogoThumbImage\"", xaml);
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Assert.Contains("{Binding BrandLogoPreviewImage}", xaml);
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Assert.Contains("NotNullToVis", xaml);
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Assert.Contains("x:Name=\"BrandLogoPreviewPopup\"", xaml);
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Assert.Contains("MaxWidth=\"420\"", xaml);
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foreach (var handler in new[]
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{
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"MouseEnter=\"BrandLogoThumb_MouseEnter\"",
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"MouseLeave=\"BrandLogoThumb_MouseLeave\"",
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"MouseLeftButtonUp=\"BrandLogoThumb_Click\"",
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"MouseLeave=\"BrandLogoPreviewPopup_MouseLeave\"",
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})
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Assert.Contains(handler, xaml);
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// 2. Behaviour on the real control.
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_app.Run(() =>
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{
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// A Popup refuses to open until its placement target is in a live visual tree, so the
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// control is hosted in a real window — the same condition the app provides.
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var host = new ytLive.Controls.OverlayHost();
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var window = new System.Windows.Window { Content = host, Width = 420, Height = 420 };
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window.Show();
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try
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{
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Assert.False(host.IsBrandLogoPreviewOpen);
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host.OpenBrandLogoPreview();
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Assert.True(host.IsBrandLogoPreviewOpen, "hovering the thumbnail must open the enlargement");
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host.CloseBrandLogoPreview();
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Assert.False(host.IsBrandLogoPreviewOpen, "a click must collapse it again");
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}
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finally { window.Close(); }
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});
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}
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}
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