test(centralui): TreeView keyboard-activation test + document preventDefault scope (T36a review)

2026-06-18 20:14:18 -04:00
parent fef4d4cf83
commit 828acd3266
2 changed files with 35 additions and 0 deletions
@@ -88,6 +88,38 @@ public class AccessibilityTests : BunitContext
        Assert.StartsWith("Collapse", labelAfterExpand!);
    }

+    // ── Test 3: TreeView keyboard activation (Enter / Space) ──────────────────
+
+    [Fact]
+    public void TreeViewToggle_EnterKey_TogglesExpanded()
+    {
+        var cut = RenderTreeView();
+
+        var toggle = cut.Find(".tv-toggle");
+        Assert.Equal("false", toggle.GetAttribute("aria-expanded"));
+
+        // Fire Enter on the toggle — should expand the branch.
+        toggle.TriggerEvent("onkeydown", new Microsoft.AspNetCore.Components.Web.KeyboardEventArgs { Key = "Enter" });
+
+        var expandedToggle = cut.Find(".tv-toggle");
+        Assert.Equal("true", expandedToggle.GetAttribute("aria-expanded"));
+    }
+
+    [Fact]
+    public void TreeViewToggle_SpaceKey_TogglesExpanded()
+    {
+        var cut = RenderTreeView();
+
+        var toggle = cut.Find(".tv-toggle");
+        Assert.Equal("false", toggle.GetAttribute("aria-expanded"));
+
+        // Fire Space on the toggle — should expand the branch.
+        toggle.TriggerEvent("onkeydown", new Microsoft.AspNetCore.Components.Web.KeyboardEventArgs { Key = " " });
+
+        var expandedToggle = cut.Find(".tv-toggle");
+        Assert.Equal("true", expandedToggle.GetAttribute("aria-expanded"));
+    }
+
    // ── Test 2: ToastNotification live-region regression lock ─────────────────

    [Fact]