Chore: homepage tests (#6278)

src/utils/layout/columns.test.js

@@ -0,0 +1,12 @@
+import { describe, expect, it } from "vitest";
+
+import { columnMap } from "./columns";
+
+describe("utils/layout/columns", () => {
+  it("maps column counts to responsive grid classes", () => {
+    expect(columnMap).toHaveLength(9);
+    expect(columnMap[1]).toContain("grid-cols-1");
+    expect(columnMap[2]).toContain("md:grid-cols-2");
+    expect(columnMap[8]).toContain("lg:grid-cols-8");
+  });
+});