test: add tests

tests/unit/routes/layout.settings.test.ts

@@ -0,0 +1,12 @@
+import { prerender, ssr } from "$routes/+layout";
+import { describe, expect, it } from "vitest";
+
+describe("+layout.ts", () => {
+  it("should export ssr as false", () => {
+    expect(ssr).toBe(false);
+  });
+
+  it("should export prerender as true", () => {
+    expect(prerender).toBe(true);
+  });
+});