Status bar text is selectionnable

src/PostIt/PostIt.Tests/StatusBarTests.cs

@@ -0,0 +1,35 @@
+using Avalonia.Controls;
+using Avalonia.Headless.XUnit;
+using Avalonia.VisualTree;
+using PostIt.Controls;
+using PostIt.ViewModels;
+
+namespace PostIt.Tests;
+
+/// <summary>
+/// The <see cref="StatusBar"/> surfaces the page's action status
+/// (success / warning / error message). The user reported being
+/// unable to copy these messages — the status text was a
+/// <c>TextBlock</c>, which Avalonia does not make selectable. It is
+/// now a <see cref="SelectableTextBlock"/> so the message can be
+/// selected and copied (Ctrl+C / context menu). This test pins that:
+/// if the message control regresses to a plain <c>TextBlock</c>,
+/// selectability is lost and the test fails.
+/// </summary>
+public class StatusBarTests
+{
+    [AvaloniaFact]
+    public void Status_message_is_rendered_by_a_SelectableTextBlock()
+    {
+        var bar = new StatusBar { DataContext = StatusNotice.Error("Échec de la suppression : boom") };
+        var window = new Window { Content = bar };
+        window.Show();
+
+        var message = bar.GetVisualDescendants()
+            .OfType<SelectableTextBlock>()
+            .FirstOrDefault();
+
+        Assert.NotNull(message);
+        Assert.Equal("Échec de la suppression : boom", message!.Text);
+    }
+}