test: add estimatedSchedule test

test/estimatedSchedule.test.ts

@@ -0,0 +1,8 @@
+import { expect, test } from "vitest";
+import { scrapeEstimatedSchedule } from "../src/parsers/index.js";
+
+test("returns estimated schedule anime release", async () => {
+  const data = await scrapeEstimatedSchedule("2024-03-30");
+
+  expect(data.scheduledAnimes).not.toEqual([]);
+});