fix(vom): add new texts and fix bugs

2026-09-10 13:01:23 +08:00 · 2026-09-08 15:16:10 +08:00
parent f528f95bd6
commit 7469d3506a
7 changed files with 258 additions and 64 deletions
@@ -0,0 +1,35 @@
+import { describe, expect, it } from "vitest";
+import {
+  compareVisualSurfacePriority,
+  selectHighestPriorityVisualSurfaces,
+} from "../visual-surface-priority";
+
+function surface(backendNodeId: number, area: number, label?: string) {
+  return {
+    backendNodeId,
+    frameId: "main",
+    visibleRect: { x: backendNodeId, y: 0, w: area, h: 1 },
+    ...(label ? { label } : {}),
+  };
+}
+
+describe("visual surface priority selection", () => {
+  it("matches a full priority sort when selecting a bounded prefix", () => {
+    const surfaces = Array.from({ length: 600 }, (_, index) => surface(index, index + 1));
+    surfaces[599] = surface(599, 1, "Important status");
+
+    const selected = selectHighestPriorityVisualSurfaces(surfaces, 512);
+    const expected = [...surfaces].sort(compareVisualSurfacePriority).slice(0, 512);
+
+    expect(selected).toEqual(expected);
+    expect(selected[0]?.backendNodeId).toBe(599);
+  });
+
+  it("normalizes empty, fractional, and unbounded limits", () => {
+    const surfaces = [surface(1, 1), surface(2, 2), surface(3, 3)];
+
+    expect(selectHighestPriorityVisualSurfaces(surfaces, 0)).toEqual([]);
+    expect(selectHighestPriorityVisualSurfaces(surfaces, 1.9)).toEqual([surface(3, 3)]);
+    expect(selectHighestPriorityVisualSurfaces(surfaces, Number.POSITIVE_INFINITY)).toHaveLength(3);
+  });
+});